Category: Software

Gimp 4, pattern fill, dithered portraits, and more.

The latest version of Gimp for Mac includes many small changes which come with no announcements and take a bit of sorting out to recognize or problem-solve.
There are good collections of Youtube videos intended for use on much larger files, with fewer color restrictions than images used for knitting.
A dock is a container that holds a collection of dialogs.
I work in single-window mode and had an issue a few times recently with the tool dock and dialogue disappearing from the left.
The method that worked for me:
on a Mac, select the link to the Preferences/Settings window found in the GIMP application menu, next to the Apple menu. Scroll down in the left pane until you see the Windows Management entry. Click on it to open the relevant settings pane. Look for the giant button labeled Reset Saved Window Positions to Default Values, seen on the bottom right.  Click on it, and GIMP will pop up a small notification box letting you know that the save will go into effect the next time GIMP loads.
Click OK there, and click OK again in the main Settings window.
Close GIMP and reload it, and familiar settings should be back.
To prevent a reoccurrence of the issue, it is possible to lock the associated tab, permanently fixing the dialogue. To do so, click on the small shape next to the Tool Options Menu text on the top right, then select Lock Tab to Dock.  Tool icons are also changed at times, leading to puzzlement when steps used in the past do not work. An example, The layers menu no longer offers the difference mode used previously in custom color separations.
From the manual: “If you need to stay compatible with older GIMP versions or you need to use the legacy layer modes for other reasons, look for the icon to the right of the layer modes selection.
This drop-down menu will let you choose between Default and Legacy. If you choose the latter, the layer modes list will only show the legacy layer modes and all modes will have “(legacy)” behind their name (the selected mode will use the short version (l). ”
To make the dialog available: click on Legacy to switch mode selections.  My posts are at times generated in response to questions I have received through forums or direct contact via my blog, but most often by my exploring whatever rabbit hole attracts my attention for a period of time before leaping into the next.
A quick way to fill with a design/ drawing in repeat is to choose and open an image, ie this rose, indexed B/W 28X30 pixels Magnify ie to 800X, go to Edit, and Copy Visible to save it to the clipboard as long as the program is open
Choose File, New, in size that is a multiple of the original ie 84X90.
Select the brush tool  In the Windows menu choose Dockable Dialogues and select Symmetry Painting, then Tiling.
After entering the desired values, as you move onto the canvas, a brush icon and crosshair will appear, along with a square bordered with a dotted edge representing the clipboard brush in full size, place it touching the left upper corner for a straightforward tiled repeat, an alternative to the familiar method using Filter, Map, Tile.  Undo and repeat if needed.  
For a brick repeat For easy and quick drawing in any repeat configuration including random, I recommend using ArahPaint.
For other tiling repeats, I have found Gimp offset limiting, offering this as an alternative method for, in this case, a half-drop design.
Work in matching magnifications as steps are advanced.
Begin with the rose, use filter, map, and tile it to twice its height, 28X60 Open a new file, twice its height and width, 56X60 pixels.
Using rulers as guides for the half drop, place a center vertical guide at 28, horizontal guides at 15, and 45 click on the 28X60 selection at the top of the work window, copy and paste it on the file marked with guides first on the left side, click on the rectangle tool to fix the layer
paste it again on the right, placing a full rose in the center square outlined in the column,
paste again and  move the selection above or below to fill in the empty third of the column
select the rectangle tool again to fix the layer, save the 56X60 file,   filter, map, and tile again to test the alignment ie here, 168X80 the icons selections at the top of the work windows change as steps are completed   A visual summary of the 28X60 image placements  A pattern is a small image that fills areas by placing copies side by side, while a brush is used for painting.
In drafting A collection of geometric design blocks built with squares, rectangles, and lines and considering optical design development, Gimp fill with pattern gained my focus once more.
Pattern fill was discussed in Gimp update for Mac 2
In developing pattern-fill libraries, and saving them, using larger pixel group pngs rather than the smallest repeat needed makes identifying them easier.
These suggestions are for drafts on 8X8 pixel grids.
They may be used to pattern fill from the clipboard while the program is open, or exported as .pat files, adding them to a “my pattern” folder through program settings, where they will be available after Gimp is quit and reopened.
Always tile/draw-in-repeats to check alignment prior to saving.
Color-reversed versions are also useful.
Once the basics are tested, one may begin to move towards shapes and more complex repeats, particularly if using electronic machines. A library of circles, some in dimension used in developing truchet tiles, drawn using the built-in Gimp circle brush, from 5 to 24 and 28 pixels in size. Developing dot designs merit a separate thread as well as more on symmetry painting.
The patterns may be saved as color or black-and-white files.
Passap users should know even though they may see this icon from some old company-shared files along with their own .cut ones,  they are not compatible with Gimp software or any other outside the DAK universe that I know of, where they were an earlier format later replaced by the stp format.
There are always many ways to approach DIY, staggered lines of equal size with alternate color starting points can fill in spaces between each other.
Gimp has offset and symmetry drawing functions.
As a long-time repeat builder, if working in Gimp alone, I prefer working with multiple images open to using layers, and visually making the drops or shifts in the repeats manually by copying and pasting on progressive-size canvases.
Starting out with colored squares in RGB mode allows for filling in each color with multiple different BW patterns, for these samples I am using only 2 linear pattern fills, beginning with a 40X40 design  tiled X5 in brick repeat  and in half drop  Introducing other shapes, 16X16 brick configuration, 32X32
half drop, 32X16   Keeping that black outline, but still rendered in B/W Eliminating the outline, retaining a quarter circle, 16X16Using mirroring, and cropping the repeat using several canvases, eliminating double lines in the process, 30X30.  The maximum size in width for large items in a single piece is generally between 180 and 200 stitches on 5 mm and 4.5 mm respectively.
Gimp comes with many built-in assorted patterns which can serve as a starting point. Here a 160X160 canvas is filled with a Gimp pattern, planning a 20 stitch border on all sides.  Convert image mode to greyscale,  using Colors/Curves adjust values to an input of 47, and an output of 203,   and if planning to knit the piece in only 2 colors, convert the result once more to indexed B/W mode To add any desired border, open a new file, in this case, 200 by 200, working in RGB mode, and fill it with any color other than black.
Copy and paste the image above onto it, it will be automatically centered  Choosing another built-in pattern, the red border is pattern filled To eliminate the yellow, use fuzzy select by color, and check that the bucket fill tool is set to fill with the background or foreground color again.
Press the shift key, and replace the yellow with white.
Convert mode to indexed B/W once more, and export as png.
If desired, using a grid view and pencil tool, additional black borders can be added.
The shift command keys on the Mac used in conjunction with the pencil tool help render straight pencil lines. Any of the larger files developed as tiled designs can be cropped to different dimensions depending on preference and end-use.
Decades ago, before software design aids, there was a knitting challenge circling around to include hidden language or undesirable language in a not necessarily easy-to-read format in knitting, beginning with hand-scripted text, which was then mirrored in width and height.
This was my version of DBJ vertical design, with the photo rotated and repeated to visualize what the appearance might be on a larger piece.
There are some really interesting examples of hiding messages in textiles throughout history and even books written on the topic, it is referred to as steganography, which means hidden writing.
When I was teaching there were often as many as 15-20 students knitting in the studio at the same time, and I felt a need for an expletive outside the less civilized 4 letter word that came to mind when multiple emergency yell shouting my name for help occurred at a single time.
Hints on using text: Gimp to create text for knitting
This image, rendered in Gimp with superimposed text and filled with patterns in both the text and in the background illustrates my answer to that problem.   I have often seen illustrations of artworks for sale online using portraits with superimposed all-over patterns.
This concept for a possible knit began with an AI-generated foursome using Midjourney  My chosen image, originally 700X700, with image mode changed from RGB to greyscale, indexed to 3 colors, scaled and trimmed to 181X183selecting a random brush for superimposed pattern, 30X40  file, new, exact dimensions as portrait, white ground, 181X183, fill with pattern, layer, transparency, color white to alpha,    copy and paste on portrait file, fix layer, save .png Image ready for download using img2track  For use on a 930, the design is broken down into multiple tracks by the software, each to be downloaded in sequence as a new pattern.  The same repeat, with a few pixel changes  Using a different punchcard pattern repeat with a different pattern fill, the portrait becomes more hidden A video on achieving a similar effect using Arahpaint   If the goal is only to change the background, there are several options for that as well.
One way to remove a background containing varied shapes, and return to an often-used of my old friend Rocco,
the file, 150X154,  add an Alpha Channel The Free Selection tool, or Lasso, allows for creating a selection by using a pointer.
Since GIMP-2.10.12, selection modes now, in 2.10.34, work differently.
Marching ants/dots come with a continuous line, meaning that the selection is not validated yet and that you can still change the selection shape (the mouse pointer comes with the Move icon) but keyboard commands may no longer work. When satisfied with the changes hit enter/ return key on Mac to validate the selection.  Enlarge the image to make following and marking its outline easier.
Freehand selection can be made in small segments at a time connecting short lines, or long, continuous strokes.
First, create a starting point by clicking on your image.
A yellow dot will appear. As you move along the edge of the image, the colored dot reappears every time you stop, with the previous locations turning into empty circles.
When it is reached, if you click on the endpoint, it turns filled and is accompanied by a moving cross.  Use the return key to pause if needed.
Pressing and releasing the mouse pointer allows you to mix free-hand segments and polygonal segments.
If you click on the endpoint, dragging alters the shape.
When the endpoint is on top of the starting point, click to close the selection.
Double-clicking on the endpoint closes the selection with a straight line.
You can go outside the edge of the image display and come back in if you want to.
Escape cancels all continuous selection segments.
When the lasso selection is completed there will be visible dotted lines around the selection Color invert the result Open a new, white canvas of the same size and magnification, and copy and paste the color inverted one on it  Use color invert once more, Rocco is now on a black ground Using the result in online dithering programs provides a different result than when dithering the full greyscale image. This result is from using https://29a.ch/ditherlicious/  If the result is an instant favorite, and the goal is to fill the ground with a pattern, use the lasso tool again to eliminate the black more carefully than I did, repeat the steps to color invert, copy and paste on red,  Color invert once more,
Fill the background with a chosen pattern, convert image mode to indexed B/W, and export the resulting file
If the image is to be knit using 3 (or more) colors per row, this is one of the myriad possible results using my favorite dithering option, https://app.dithermark.com. Returning to the greyscale image on the black ground,  the latter can be bucket filled directly with any chosen pattern   To superimpose a pattern on the whole image, fill a white canvas in the same dimensions with the pattern use Layer, transparency, color white to alpha  Copy and paste the result on the original Full greyscale is not knittable.
What about using the AI portrait in B/W or 3-4 color knitting?
172X172ditherlicious 2-color,   and dithermark using the built-in pattern selector for 4-color.   The image will be elongated in actual knitting, this window from img2track on the left is set for 4 colors. Changing selection to 2 colors and opening the same image, it is converted to B/W 3-color with diagonal hatching 2-color
Though visually some images may appear as though more than 2 colors are in use, here is the comparison using img2track between opening the above on the left, and, on the right, after changing the image mode to B/W indexed using Gimp with added cross-hatching followed by image mode to B/W in Gimp simply to note visual differences    
and a different cross-hatch, with a value balance change, in B/W mode

 

Using punchcards (3) or electronics to track small cables in pattern

Previous shares on aids to tracking cable transfers
Using punchcards to track small cables in pattern 1
Using punchcards to track cables and twists in pattern 2
Visualizing knit cables in color 2_ using Numbers and Gimp
Hand knitting patterns are usually depicted with the knit side facing.
If crossings are intended to match them exactly when working on knitting machines, they are made on the purl side, and their direction needs to be mirrored.
The blue dots illustrate hand-knit symbols, and the pink dots the machine-knit companions I was recently contacted about the possibility of reproducing the swatch on the far right. The image on the left is an actual knit, first tested with cable crossings mirroring each other along vertical columns.
The inspiration swatch was likely knit on the bulky, twisted every 4 rows, mine on a 4.5 mm machine, twisted every 5 rows.
It is possible to crop, copy, and paste initial photos, as in the center image, to visualize how the process may be altered prior to spending time creating new charts or any actual knitting.  Building charts in a spreadsheet:
begin with creating and saving custom shapes, which can be made editable, and outlined if preferred (magenta) to further define the stitch brought forward, with the other moved behind it (blue).
Symbols used:
1. black cells/ knit stitches
2. white cells/ needles out of work, creating ladder spaces and non-selected needle areas where stitches are to be moved in the direction of superimposed arrows
3. red arrows/ stitches that are lifted off the needle bed, brought to the front on the purl side. The stitch on the adjacent black cell/selected needles is removed, travels behind it, and replaces it. The held stitch is then placed on the now-empty needle. Both stitches are brought out to hold/E position to knit properly on the next carriage pass.
The plan is to use the slip-stitch setting in both directions.
Since there are needles not in use, the end needle selection needs to be canceled.
Proper needle placement is required for patterning accuracy.
One option for achieving it is by air knitting the first row of the design, another is to program the width of the planned knit in electronic machines, establishing pairings, and using the single motif setting with no guesswork.
A chain cast-on can be performed, followed by dropping chains in ladder locations and taking those needles out of work to A position.
Even weight is useful if crossings are to begin after only 4 rows of knitting.
Each repeat is 8 stitches wide, punchcard users repeat it X3 in width, and in the charted height X3.  Proofs of concept: 30X20 electronic repeat for vertically mirrored transfers,   and the alternating twisted arrangement  The work on the machine    In the resulting swatches, patterning errors such as the marked one become difficult to repair after the fact as stitches grow in size and ladders nearly disappear   Both swatches measure less than 2.5 inches in width, another reason to explore the results on bulky models if they are to be used in garments.
If planned as panels combined with stocking stitch, careful planning is due to overall gauge differences and those in row counts when seaming and joining.

Blistered dbj 3

Names referring to the same knit fabric can vary between machine manuals for specific models and brands or references in books, magazines, and articles depending on the dates they were published.
My earlier share on the topic:
Blistered stitches dbj 1
Blistered DBJ 2 and technique variations on a single repeat, introduced some of the concepts involved.
Beginning with any random published repeat can offer the start of exploring a range of fabrics. This was a Pinterest punchcard share, markings indicate it was intended for Brother machines  Methods for obtaining color separations for specific knits have been discussed in other posts.
Brother models can use the cam buttons to perform a function in one direction only, ie by using only one tuck or slip button, the machine will knit when the carriage reverses movement to the opposite side.
Developing specific color separations makes the files usable on other machine brands and models, makes it easier to return to specific rows in error corrections, and is my personal preference in test swatching and complete pieces.
Drawing the initial design in repeat provides a visualization of the resulting secondary shapes and the number of needles required for tiled variations in finished pieces based on gauge.
The first design is intended for use in every needle rib, with the knit carriage knitting in one direction, and using slip or even tuck in the opposite direction.
The 24X32 design extracted from the inspiration punchcard  A: the rendering scaling the design twice in length
B: making the choice to color invert it in planning slipped stitches on the larger number of white pixels
C: superimposing black lines on every other row beginning with row 2 A quick review of the steps involved in working with Gimp:
begin with magnification for easy viewing, ie. 800X, view grid if preferred
the starting brush can be as small as this 2-pixel   select it and save it to the clipboard by choosing copy visible, making it available to bucket fill images, or export the same design as a .pat file and save it in the appropriate settings folder for future use.  A: the original design repeat rendered in black and white
B: layer, transparency, color white to alpha
C: file, new, white ground, matching size, filled with a pattern of pairs of horizontal all-white pixel rows beginning with white on row one, followed by all-black pixel rows on row 2
D: copy B and paste it on C, and export the file as png The chosen repeat may not be color reversed after programming it using the machine’s built-in electronic functions.
White pixels slip, stitches on the main bed in non-selected areas would not knit off for extended periods ie where red marks occur, and noticeable problems would develop quickly Beginning proofs of concept for this version, 24X64  knit on 60 stitches using it drawn in repeat X3, 72X64, and programmed as a single motif  The result is a very subtle contrast lacey knit The yarn thickness and color were changed. The pattern begins using the slip setting and transitions to tuck, also in only one direction. Because the ribber is knitting every stitch between stitches on the top bed holding side-by-side loops down, tucking on multiple side-by-side needles can be performed,  producing a wider, stretchy knit that also lies flat.  True blisters/pintucks generally knit rows on the top bed alone forming pockets that are eventually sealed by all knit rows.
Slip stitch settings are used.
The design is at first lengthened X5, then every 5th row is filled with black pixels or punched holes.
A begins in smaller groups of gathers, testing for any errors or problems, while B allows for deeper folds. A: the mark shows the stitches on the top bed begin to slip far too many rows
due to using the color reverse option in the 930 before continuing to knit.  With a switch to the blue yarn, all-knit spaces between the pockets now begin to appear gathered. Slip stitch results in narrower knits, noticeable in the ruffled effects on every needle rib above the cast ons B: the extra row of slipped stitches result in a far more textured knit   Developing other layouts for the same design, brick 24X128   half drop 48X64 Eliminating unwanted extra stitches from the original, modified to 24X28 pixels drawn in repeat to 144X168 brick version 24X56 half drop 48X28  adding those all knit rows  Viewing repeat alignments  The 24X112 brick repeat suitable for punchcards, not tested,   and the half drop, 48X56  tested using a 10/2 cotton and lightly steamed and pressed. Knit on 80 stitches, it measures 17 inches in width and 11 in height.
an attempt at a more detailed look  

 

A collection of geometric design blocks built with squares, rectangles, and lines

I have grown fond of playing with ArahPaint’s functions: guess weave from grid, and drawing in repeat, and am constantly amused by the speed with which most design repeats and color separations can now be drafted when compared to the very first efforts in the days of anyone trying to use Excel spreadsheets to accomplish the same tasks.
Drafts designed for handweaving provide endless inspiration for knit design.
In conjunction with ArahPaint, Gimp remains a frequent go-to as well, along with Numbers for Mac for when spreadsheet tables meet charting or design needs.
The programs are free, there is no need to purchase expensive design programs in order to develop DIY motifs.
Developing tiled repeats suitable for multiple stitch types, including tuck , offered some repeats that began with geometric blocks built with squares, rectangles, and lines, some of which are suitable for punchcard knitting.
Many are included here again to serve as a cumulative collection of possible springboards for use as is or for developing more personal variations.
A reminder: the pngs below were saved as indexed, B/W files.
When downloaded, they may be converted automatically to RGB mode.
Prior to downloading any to machines, check their image mode, and if it is RGB, convert it back to B/W indexed. The pixel dimensions text for designs suitable for punchcard machines are highlighted in a different color.
More repeats are available in the post on Working with diagonal patterning in machine knitting
Larger pngs may be subdivided to change their appearance or alignment of specified numbers of cells.
To begin with, cells may be filled in any color, with mode and color changes to indexed BW if for electronic download
8X8  punchcard full repeat  its png12X12

visualized drawn in repeat X12 and modified using drawing X12 in random repeat for use in electronic machines   introducing dotted squares, another 12X12  19X1918X18, shown tiled X 9 in both width and height and modified using random  A Ravelry query prompted these designs
22×22
22X3032X32
44X54  66X60
The present series:
20X20
25X23
26X23
35X35 68X68 A visit to a quilting blog led to these explorations, beginning with a 20X20 repeat, rotated in 4 directions to be combined in new 40X40 repeats for different movements.   A first simple 40X40 grouping  tiled X5 in width and height, also color reversed to visualize the result with the potential exchange of the yarn positions in the color-changing sequences  Dividing the repeat in half, color inverting the 20X20 segment on the right, combining it with the left half And with color inverted quarter segments   In the following designs, the meeting points are slightly offset.    and lastly, aiming for more of a diagonal  Varying shapes
12X12  drawn in repeat X13 26X26 drawn in repeat X6 with color inverted quarters drawn in repeat X6 16X16drawn in repeat X10 drawn in repeat selecting random 24X24
24X20
24X24
Developing related series, stop or continue, choose a preferred design anywhere along the way
47X47 94X94 with segment rotations drawn in repeat X2  a few rows and columns removed, 43X43 86X86
a series beginning with 68X64 pixels  A purposeful effort to create outlines, 22X24 55X59 Alternating outline colors, 50X72
Using pixelated lines to break up blocks
8X28 16X16 drawn in repeat X10 14X14drawn in repeat X11 24X2424X24 with quarter-turned segments
drawn in repeat X7
24X47 cropped to 24X40, for different symmetry  Developing repeats evocative of samplers
48X48  64X64 An electronic repeat with shifting angles, 32X32  magnified 2X2 for a better view  Color inverted quarter segments composing a slightly glitched pattern evocative of tartans, 128X128  112X112
Tiny details, large repeat, 48X98   34X140 74X74 The start of a different potential family, 93X32 Introducing circles or parts of them to the library, 19X20  tiledX10  random variations   36X40

trimmed and redrawn to 36X79

ArahPaint in knit design 4

Reviewing ToolsGuess weave from Grid
ArahPaint continues to be user-friendly for multiple applications including knit design.
The developer shares how-to videos that are frequently updated
https://www.arahne.si/public/news/
https://www.youtube.com/@arahpaint4/videos
The same holds for their downloadable manual, and any questions are answered in a timely and informative manner.
I am often driven by knit technique curiosity first, then find myself circling back periodically to program explorations to shorten the process for drafting blog charts and repeats, sharing new information as I notice it in manuals or online.
A recently reviewed https://www.arahne.si/tutorials/how-to-import-old-pattern-drafts/ led to my first experiment.
When using the weave guessing function, it is good to know that the program looks at the center of the grid, and tries to ignore the grid itself. If the center is not a single color and is homogeneous, use averaging to smooth it out before color reduction. If it is not filled properly, use contour operations (thickening) to make it stronger.
When guessing the grid, make sure you use the “preview” function, so you see what the program sees.
The steps, relatively “winging it”:
as in resizing/scaling any design, accurate cell/ anticipated stitch and row counts are needed. They may not be given in the source, where grid properties, cell shapes, and colors may all vary.
For example, the grid in the original may be 6X6 for punchcard designs, 10X10, or even 5X5 for electronic models. Recognizing the blocks used aids in examining and adding up counts when they are not provided.
Load the selected picture, in this case, a random RGB one from a previous post, known to measure 24 stitches by 60 rows: Go to colors, and select convert to 8-bit palette,  resulting in these changes in the palette window on bottom right corner  Before reducing the number of colors to 2, adjust your background and foreground colors. Without disturbing the 0 value,   use the shift key and with the mouse select a light color from the 8-bit values, it will replace the #1 value.  Return to colors, set the number of colors to 2,
Magnify the image as needed, and use the rectangle select tool to eliminate the dark frame. There will be a dotted color dashed outline that can be adjusted,  use Image/ Crop to the selection to eliminate the unwanted border.
Select Tools/Guess weave from grid, and a new window will open.
The program automatically defines the size of the original pattern. If the value is not the expected one, enter the desired pixel counts, and click OK.  The “weave” will appear on top of the original pattern, surrounded by a bounding dashed line,     choose Image, and Crop to the selection, and save the picture as PNG. The result matched that in the previous post, with the Gimp chart on the left, and the Arah on the right. Check that the final PNG is in indexed B/W before any electronic download.  Select OK, Close, and save.  The Threshold adjustment slider is found in the reduce the number of colors window and may be used to alter B/W images at any point in image processing.
In addition to using Image/draw in repeat to check alignments, the View Repeat option will tile the design an arbitrary number of times automatically, providing a large-scale view, illustrated only in part on the right in the image below. The process is repeated with pattern #42, 46X56, from a Brother electronic pattern book:
the original is on the left, the ArahPaint guess grid result is on the right, colored differently to make it easier to check for matches and any pixel placement differences,  its B/W png.   The steps again with #3604, 24X240, once again comparing Gimp results to those obtained with ArahPaint  One of the challenges which can appear to varied degrees when converting files is the amount of pixel cleanup required on the resulting images.
One contributing factor that may be encountered is that the original to be processed may be askew, as only slightly in this image, #26 from the Brother 270 collection.  Using the unskew tool is one manner to fix the geometry of a layer distorted by perspective. Rotation may also be used.
Make a rectangular selection around the object which you wish to unskew.
Click on the Unskew tool  Drag the corners of the selection to the distorted part of the image, they are marked by hollow squares at each corner Click OK in the Unskew dialog box The selection becomes a normal rectangular layer. If uncomfortable working with layers, click on this tool to fix the image and remove the bounding box  Repeat the process already described, reducing the number of colors to 2 after cropping to the selection, the dark squares are not a true black. If the png is to be used for download to an electronic machine, change the grey to true black before saving.
The original, followed by the ArahPaint result and a tiled view of it The same approach may be used on large nonrepetitive images.
Hand-count the number of cells in width and height if they are not provided.
A scan from the Dover publication on Celtic charted designs, converting this 73X54 image proved easy.  The scan of a 130X95 stitch/row count chart from Charted Peasant Designs from Saxon Transylvania posed some issues.
The problem, in this case, was not the use of the basic technique, but that multiple areas of the chart were not marked with the black contained within grid cell borders.
Cropping problem areas, processing them separately, and pasting them in place on the previous result where needed appear to greatly reduce final pixel cleanup.  While weaving and many needlework drafts are often represented on square grids, some knit designs are published to reflect the fact that actual knit stitches with the exception of garter stitch are typically rectangular.
In the early days of electronics, knitting machine models began to have libraries of stitch designs stored in memory, cassettes, or floppies. Often manuals or booklets were printed as companions, visual guides to stored contents. Colors and counts did not matter, since the intent was not to provide reproducible designs.
This chart is from Studio, published as a tuck pattern.
My best results were obtained after cropping the original to 74X60 unit counts and scaling the scan’s A: 1733X992 to B:1320X960, a multiple X16 of both values.
C: the result of reducing colors to 2, followed by guess weave-from-grid for a successful match to the original, a final 60X48. The png would need to be color inverted for use with the tuck stitch setting. The png, after removal of a few wayward pixels, and color inverted for use with the tuck setting   Returning to that griffin, after resizing/scaling the original to multiples of 11, 1430X1045 pixels, the left portion of the design produced a clean match to the original, while the right segment with the off-grid dark cells still did not. The previously separately reduced segment was added on the far right yielding a far closer match.  Weaving and cross-stitch libraries offer a huge range of potential design repeats.
This is from a 1912 cross stitch pub, measures 165X 230 pixels From a similar source: is that a kitty protecting his shawl, and what stitch is that?! 169X142 pixels Some resources:
Weaving library: fressinet offers images in black and white
Patternbase: from Dictionary of Weaves
Archive.org: filet crochet

Beginning with a design selected from p.83 in the Dictionary of Weaves Color convert to 24 ->8, an expanded palette will appear. Press the Shift button and click inside the picture to manually select the colors, adding 63 in this case
Filters menu: choose Averaging, and follow with the second choice Repeat the last operation X10
Colors: set the number of colors directly to 2
Guess weave from grid to 18X18
Crop to selection, magnify and check results
Convert to black and white if needed
Check repeat alignment   Other ways to handle the same task: another ArahPaint tutorial offers additional tips.
From the Cross stitch book, a 40X40 chart using a straightforward setting of the number of colors to 2.  One way to convert the picture on the far right to black and white prior to saving it other than adjusting the palette colors is to use Threshold to reduce the number of colors.
1: select Black white, and Preview in the associated window
2: if an adjustment is required, the slider may be moved to the left or right, Undo if needed, and when satisfied stop
3: click OK and close the window, save the picture as bmp. An earlier design intervention for the final B/W png: after setting the palette to 2 colors, reduce the number of colors with the same 3 steps using Threshold for another successful result. Reducing the number of colors window instead of setting the number of colors to 2:
Color convert to ->8, an expanded palette will appear
Choose Averaging, and follow with the second choice, Repeat the last operation X10
Open the Reduced number of colors window  Press the Shift button and click inside the picture to manually select the colors for foreground and background, this did not work for me on my Mac with the latest OS. Selecting colors manually from the expanded palette by clicking on them is an alternative. The higher contrast between the two the cleaner the results.
Select Preview, if satisfied Click on OK, and Close
Select the whole picture
Guess weave from grid
Crop to content
Magnify, evaluate the results, adjust the palette to BW if needed, and save  Filet crochet pattern books also provide gridded sources that may be used in knit design. This 43X43 pixel file is adapted from Priscilla filet crochet book #1
The same process may be used on color separation templates produced in DAK

From a random Pinterest find with an original 330X474 RGB chart:
A: guess weave from grid, crop to selection
B: tools, find repeat, crop to selection
C: the final 47X46 png drawn in repeat  Adding colors to black and white pngs following the tip by the developer in the post comments:
Choose a black-and-white repeat, in this case, a 36X9 pixel repeat  Double-click on one of the two colors to protect/lock it Double-click on it again, and the lock disappears, the color is no longer protected.
In the palette, use + to add a new color, this may be repeated more than once to add more colors or go to colors, set the number of colors to a number, ie. 6, for a random palette group that may, in turn, be edited to other values.   Double-click on the rectangle tool to draw filled rectangles  In rectangle options, above the palette icon, there are toggle buttons for Horizontal and Vertical, remember to protect a color  Once your selection is made, draw the filled rectangle across a selected width and height while keeping the protected color intact. Draw the result in repeat to check for alignment the protected color may be toggled to white  If the designs are to be programmed for multiple color slip stitch or DBJ there are rules to be observed, and there may be restrictions on whether each palette color will be recognized as a third or fourth color by the download program ie. when using Ayab, where no two colors may occur in the same range of 8-bit values. For 4 colors, the ranges would be 0-63, 64-127, 128-195, and 196-255.
The img2track partial window with the associated color assignments for the first vertical variation.  The horizontal choice allows one to play with selections possibly matching yarn colors in fair isle knitting,          only 2 colors per row may be used, here the A feeder yarn remains fixed Remember to unlock the previous color choice if protecting new segment selections.
Visualizing possible FI striping results in progress Working with diagonal patterning in machine knitting introduced some approaches.
Following guidelines in Easily generate random weaves it is possible to quickly generate DIY designs for use in multiple techniques.

To begin with, load a new picture 12 pixels wide and one pixel high
Set the number of colors to 2, black and white if the goal is downloadable pngs.
Fill in a repeat, and multiply it by Y multiple times to achieve the final number, or fill in vertical bands using the pencil tool on the final planned starting canvas.
A single row repeat first multiplied Y X6, then X2 Select the measurement tool: The tilt tool shifts every next line of pixels, the width of the line in the X field for the horizontal tilt, or in the Y field for the vertical tilt Default values are set to 0 The selections for this design:  The resulting file, also shown drawn in repeat: Two more, with a starting picture total height of 24 pixels One repeat, multiple width selections  This repeat may be used for tuck or slip stitch, providing the final png is color reversed. The 12X24 initial result was multiplied X2 in height/Y to produce the 12X48 one. The image on the far right checks alignments Working in multiple colors using the same approach: These charts continue to use the selections with reverting back to the original after each variation, though steps may be made sequentially and reversed in a matter of seconds Any results may be modified by adding other program functions to produce drafts of expanded repeats ie. through using drawing in repeat/ random. The results may be suitable for large pieces ie blankets and likely best knit as DBJ.  The ease of designing needs to be paired with good notes on charting cause and effect and an understanding of the relationship between pixels/ punched holes and stitch formation using varied cam button settings.
Using Filters is an additional way to develop images that play with the eyes, sometimes with only a few keystrokes.
A description of filters and their use may be found on pp 88-101 of the user manual (thumbnails # 96-108).
Filter options: This first series uses only the contour filter and random selection of arrows from this tool

beginning with a 12X12 pixel design developing it into a 31X31 one, not all doubled pixels eliminated

Midjourney inspired knits 1: single bed diamond shaped strips

My son recently introduced me to Midjourney and generated many images capable of inspiring a range of machine knits. The interpretation and execution may not be as simple as would initially appear, particularly to non-knitters.
Commercial knitting machines are left out of this conversation. The fact that they have multiple beds,   and compound needles that facilitate whole garment shaping makes complex structures possible that may only be partially reproduced on home models.
Japanese machines such as mine use two beds, with the ribber/ second bed added for knit and purl combinations, which may be lowered as seen below when not in use, or removed altogether.  One accessory that would make things easier to reproduce more textured knit and purl variations would be a Brother G carriage, which operates on the top bed and slowly and loudly produces programmed patterns on both punchcard and electronic Brother models.
The initial Midjourney inspiration,  and a “simpler” variation.

In hand-knitting concurrent shaping of both sides can be considered.
When working on 2 needles, because the work is turned over, knit and purl execution will change when ridges visible on both faces are planned.
Knit stitches are rectangular as opposed to square, often in a 4/3 ratio.
This chart begins to illustrate the actions involved.  Machine knitters constantly look at the purl side when working on the top bed unless ladders are manually reworked into knit stitches or the work is turned over.
Turning the work over is executable using a garter bar accessory, available for use on multiple gauge machines.  The standard and bulky garter bars offer sections that may be joined together for use on the whole needle bed, while the tool for holding, transferring, or turning over small stitches offers only 30 eyelets, the red lines on it were made with red nail polish, a handy way to mark KM tools or even linkers at fixed intervals to save constant counting.
The work is pushed off onto the garter bar with the curved ridges up and returned to the machine to create the purl ridges after turning the bar over.
At that time, the needle hooks will grab the stitches from back to front and the bar can be removed.  If the yarn supply is to be kept continuous, the knit carriage and yarn need to be brought to the opposite side before resuming knitting.
Spreadsheets offer a way of visualizing steps ahead of any swatching. Not aiming for a direct copy of any of the Midjourney results, this is a start with 4-row sequences
and an illustration of how strips might be joined to produce slightly different side edges. The diamonds are formed by increasing and decreasing on both side edges.
The sample is knit in a 2/8 wool, which even when knitting at tension 9 yielded stitches far too tight to remove onto the standard gauge garter bar, the 30 stitch tool was used.
Stocking stitch tends to roll to the purl side. For a cleaner edge, fully fashioned shaping is used.
From the Brother knitting techniques book, to decrease a stitch:  To increase one If both sides are shaped at the same time, the length may get affected by slight differences in stitch height formations on the carriage side as opposed to opposite the carriage.
In the test swatch increases and decreases were made consistently opposite the carriage, resulting in shaping on alternate sides every 2 rows.
Charting out the concept: the arrows represent the direction the carriage will be moving.
The blank row occurs where the knit is turned over.
A single row is knit across all stitches to the opposite side after the knit is turned before returning to shaping.
The last 2 rows in the chart would be the first 2 in the following shape.
The black cells represent what will become purl rows on the knit ground. The proof of concept:  The machine-knit sample aside from a quick hand-knit on #8 needles, attempting garter ridges, offering a lesson in gauge and texture.
In a final piece, the shaping in the hand-knit would be carefully considered. A first draft plotting out arrangements for alternating knit/ purl ridges: the center column can be adjusted to any width, and cables or other manipulations could occur at the narrow pivot points.
Seaming or joining would occur in areas where rows are outlined in blue. Those areas could be lengthened as well.
The chart can be further marked for beginning with either a half or a full diamond. For hand knitters, the yellow cells would be purled with knit side facing, and knit with purl side facing.  A Youtube video showing building the fabric using the short row technique: https://www.youtube.com/watch?v=H7WrYOV2A6w&t=1297s
For anyone with intarsia or multicolor fondness, some AI color renditions based on triangles as well  

On a very different note, large, nonrepetitive AI-generated portrait images may be superimposed with brushes in any chosen design repeat to render designs such as these:

 

Blistered DBJ 2 and technique variations on a single repeat

Blistered stitches DBJ began to explore some variations for the production of easy knits which resulted in pockets separated by areas of joined stitches, and depending on the design and whether one bed knits more stitches and rows than the other, can make the surface appear 3D to varying degrees.
There are several things to consider in DIY designs.
In my recent browsing and being inspired by “The curse of truchet tiles”, this png was one of the resulting repeats, developed using ArahPaint.  It is larger than any previously tested with this technique.
Beginning with a 36X36 file drawn in test alignment to 108X108,    expanding the design through a diagonal choice into a 72X36 repeat  Large repeats require large swatches if gauge matters, but smaller tests serve well to evaluate tension and cam settings. It is a good idea to be consistent in yarn choice.
Thinking things through:
the white pixel areas will produce the pockets, separating from the ground, and the black pixel areas will compose the joined portions of knit.
To increase the effect, the height of those black pixel areas is reduced by changing their configuration in order to use the slip stitch setting to shorten them.
The first pattern fill requires doubling the height of the whole repeat in order to use the file in a tubular setting.  Rather than doubling the file in height, this brush is used to fill the same black pixel areas. After a few pixel cleanups, this is the final repeat, The png was tiled to the number of stitches planned, with the addition of a knit stitch border along each vertical side and knit on 88 stitches for proof of concept.
End needle selection is on.
The carriages are set to slip in opposite directions, in either arrangement A or B. In one-color knitting starting preselection side does not matter.
The tension used, since so many stitches will be knitting on alternate beds, needs to approach that used for the same yarn when knitting stocking stitches.
The red yarn stitches mark the knit side of the fabric.
The cotton ball illustrates the formation of pockets.
The color change happened when the first cone of yarn ran out.
The yarns are 2/28 Italian imports of nonspecified fiber content.
The piece measures 10.5 inches in width.
When the settings are changed from tubular to every needle rib, the fabric is considerably wider and ruffles as seen at the top and bottom of the swatch, which could become a planned design feature. A segment was cropped from the 72X36 drawn once more in repeat to 84X72, repeating the same steps for processing the file alignment check If the plan is to evaluate the effect of tuck stitch on the design, to begin with, the file needs to be color reversed, whether in the drawn png or using machine settings Exploring results with the ribber set to knit in on every row, the swatch below the red line was produced with the knit carriage set to knit in one direction, tuck in the other, while in the remainder the knit carriage set to tuck in both directions. The areas that in slip stitch would form pockets knit in every needle rib, while tuck stitch segments produce a lacy effect.  The same design, using the png created prior to color reverse, set for tubular slip stitch the transition between the changes in knit carriage cam settings results in changes in textures and added width The full tuck section (bottom) measures 16 inches in width, and the slip-stitch one (top) measures 11.5 inches.
Trying for a half-cardigan repeat with the same yarn produced an extremely wide knit with no discernible design.
Tired of double-bed knitting and swatches in a single color and large enough to cover pillows? the starting image reduced in size X4 to 21X18 pixels opens a new series of opportunities for knitting including on the single bed.  The design, knit here as DBJ, uses the built-in KRC color separation. At the bottom, the knit carriage is set to slip in both directions. The ribber uses the birdseye setting in both directions with the addition of lili buttons.
At the top, the knit carriage setting remains unchanged, and the ribber is set to knit in both directions, for a striper backing. The tension remained unchanged. The image illustrates the difference in the aspect ratio of the design and the height and width produced by the respective settings. The same design knit as single bed fair isle produces problematic floats on the reverse which would need to be anchored down in a wearable. When knitting fair isle end needle selection is used to keep the yarn in the B feeder anchored so as to prevent any separations along the vertical edges of the design.
Here the light color is 2/8 wool. The yarn in the B feeder is switched to a 2/24 random contrasting color, and the knit carriage is set for thread lace. The white pixels knit both yarns together. Programming a blank row and knitting 2 yarns in this manner is considered by some an alternative to using the plaiting feeder.
End needle selection is canceled. If needles are brought forward, push at least one back to B so the combined yarns knit. In a long piece, a repeat in the width of the planned number of stitches could be planned with one or two blank pixel borders on vertical sides.
Due to the contrast in yarn thickness, the thin yarn creates large stitches that bulge in areas where it knits with the thicker yarn floating behind it, and the areas with combined yarns recede.
The areas in double thickness secure the yarn that produces floats, so that the latter may be trimmed on the purl side, leaving cut ends in any length. When cutting floats, consider sliding something under them and the thin knit so as to avoid cutting it as well, the fabric will release and flatten. Using elastic, the background yarn used needs to be thinner, here a 2/20. The repeat program is left unchanged, but the position of the yarns is swapped so the elastic/ “thin” is placed in feeder A and the white/ “thick” in feeder B. There is a considerable change in size, observable at the top of the previous images.   Aiming for float control, the repeat is edited.  A test of the 18X9 repeat using the fair isle setting measures 6.5 inches in width,   while the same stitch repeat knit using elastic and the thread lace setting adjustments once more, measures just under 2.5 inches in width 

Developing tiled repeats suitable for multiple stitch types, including tuck

Punchcard machine users have limitations in terms of repeat width, depending on the brand and age of the machine. Those numbers might vary from 8 to 12, 18, 30, and 40, with a 24-stitch width eventually becoming the most frequent.
When electronic machines were first released decades ago, multiple built-in functions allowed one to manipulate programmed repeats. The latter were drawn with electronic pencils (Studio) or far more often with permanent jet-black ink on mylar sheets or “cards”. Passap at one point developed the initial Wincrea version with a very short dongle for downloading designs to the console away from the knitting bed.
Brother was the first manufacturer to allow programming multiple repeats on a single mylar sheet. It took Studio some time to play catch up to eliminate all the potentially wasted space on them.
Both brands used mylars with 60 rectangular cells in width by 150 in height.
Variation buttons for the Brother 910, for those not familiar with its options.  Building up a simple angular repeat can easily be done freehand filling in pixels, or with the use of the straight line tool in ArahPaint.  The 12-stitch design may be mirrored and rotated in a variety of directions. For use in a punchcard, this may be done once in width, and three times in height to meet the minimum length requirement.
It is not necessary when drawing to use only black and white to start with, though if the goal is ultimately to produce a programmable bmp or png, the final images need to be in those 2 colors.
It is easier to produce a design filling in fewer squares in lesser density and then to color reverse the results if that is required for the specific stitch type.
A: using horizontal and vertical mirroring yields the start of a diamond shape. Punchcard users may find it easier to mark the dark squares and punch everything else if the goal is to use the tuck stitch setting or to have a card “safe for everything”
B: checking alignment by tiling the file
C: if the intended goal is tuck stitch, and the minimum information is drawn in the design, then the repeat must be color reversed, whether in the program used to create the file or by selecting the built-in function in an electronic after download.
D: the color reverse image tiled, may be suitable for some interesting fair isle striping or exchanges of positive/negative spaces at the intersection of any of those rows where the double-height or double-width markings occur.
Red cells indicate two side-by-side unpunched holes or unmarked pixels. In theory, this breaks the tuck rule requiring a knit stitch/ unpunched hole or black pixel on either side of an unpunched area/white pixel, but it likely will be fine, producing something that looks more like a slipped stitch than a tuck.
The double-height areas marked in green would be a problem if one were to test the repeat by doubling its length, with a compounded issue in those areas where tuck stitches would then happen on side-by-side needles for 4 consecutive rows.
Usable with some care for knit weaving, slip stitch, and other stitch types. Results are not discovered unless actually tested.
Keep good notes. Breaking the design into segments to knit as a striped fair isle ie in these 4 places Variations are easier to imagine if one begins with colored repeat segments that can, in addition, be varied using color exchanges to resemble approximate yarn colors. Instructions on color banding using ArahPaint follow at post bottom. In the last post, the same image was mirrored using ArahPaint  The result is a 23X23 pixel design.
Any incrementally larger repeats would require the same operations, using the mirror X-1 and Y-1 options to avoid any side-by-side equal cells, but the process is easier with some understanding of isolating repeats. When the 23-stitch file has been formed, manually trim one pixel along the bottom or top row, and one along either the left or right side, down to 22X22 pixels tested in B/W repeat and here color inverted it is executable in double length thus offering the opportunity for color changing every 2 rows, testing the possibility of its morphing into a mosaic/maze design, remembering first to color reverse the repeat as given here,  which in turn yields a file that may be knit with color changes every 2 rows, a technique that can produce maze/mosaic designs with an appearance very different from the same pattern knit as fair isle.
In this swatch, 2/20 wool yarns were used. This results in a knit that can be steamed to stay flat.
The variations in the amount of tucked stitches and their placement expand in some areas more than others yielding wavy vertical side edges.
The striping occurred to enhance the visibility of stitch formations on the machine, but can be a deliberate way to add even more colors to such pieces. The same design, knit in 2/8 wool, begins to show that a pattern may produce very different effects with a simple change in materials or color choice Working outside straight lines and exploring random starts: the post Working with diagonal patterning in machine knitting introduced several larger initial repeats also suitable for tuck patterning when reversed, including this 12X24 pixel design,    and the companion larger file, 144X144 pixels The larger file can serve as the start for exploring knit pattern variations through the use of filters.
A description of filters and their use may be found on pp 88-101 of the user manual (thumbnails # 96-108).
A “fast pattern” user guide shared by the ArahPaint 6 developer October 2023 which demonstrates how to use filters with associated designs https://www.arahne.eu/pdf/fastpattern-EN.pdf
The associated tool options: This first series uses only the Contour filter and random selection of arrows from this tool

beginning with a 12X12 pixel design developing it into a 31X31 one, not all doubled pixels eliminated doubled pixels eliminated

 The Zigzag filter creates a zigzag from the image. The number of zigzags depends on the setting of the filter option (X, Y, and Value) and the direction (Horizontal, Vertical, or a combination of both).
X: determines the number of zigzags up and down, the number should be an even number ie. 144 divided by 12 would create 12 peaks
Y: creates the vertical direction of peaks
Value: set to 0 the whole image height is taken as amplitude
The variations can be endless, and exploring changes in settings will help develop a sense of what happens. The larger scale results may at times be reduced to a significantly smaller working repeat. Tools/Find Repeat often but not always will do that seamlessly.
The manual offers instructions for manipulating vertical bands of color. Such variants could be knit as intarsia or multiple colors per row, with limitations and considerations.
This 4X4, vertical repeat, tiled to 12X12 color reversed for tuck knitting drawn in repeat and filtered is knittable, but not interesting to me. The result, shown tiled for clarity Moving away from straight lines, these initial experiments employed limited variations. The red X mark marks the repeat suitable only for fair isle knitting Choosing individual results to knit in tuck stitch, in review: the smallest repeats may be isolated and pixels cleaned up if preferred, remembering to color reverse when needed. This 24X24 repeat is suitable for punchcard models with the black pixels areas punched. Testing is far easier and quicker using electronic machines, do not use double length The design is asymmetric, subject to personal preference, and as usual, with results dependent on yarn and color choice.
The yarn used at the top of the photo is a wool-rayon, knit single bed. It was hard to identify stitch formations, hence the swatch was short in height for a visual texture check. Because of the rayon content, all edges steam and press fairly flat.
The other yarn is all wool, knit in every needle rib with the knit carriage set to tuck in both directions, and the ribber carriage set to knit in both.
This type of knit is often referred to as pick rib. Depending on the tuck stitch distribution, the stitches are forced apart vertically and can produce an eyelet effect in a fabric that lies quite flat. A closer look at approximately the same part of the ribbed fabric.   A 58X16 file after some cleanup and cropping of one of the other variations is to be color-reversed for use with the tuck setting. Depending on the thickness of the yarn, double length may be used safely for added texture.  The swatch illustrates the difference between fair isle knitting and tuck stitch, even when the tension used in the knit carriage remains fixed. Fair isle is in the slip stitch family, so it is short and narrow, while tuck stitch tends to be short and wide. It is usually recommended that fair isle floats be no wider than 5 pixels. Many here break that rule and would need to be managed if the design were to be used in a finished garment.  This segmented and cropped to 17X144 pixelsMirrored X-1, 33X144 pixels I like to plan repeats for any intended piece when possible in a width matching the number of needles in use, which allows programming as single-motif in the 930 with img2track and eliminates the need to turn on other built-in functions or assign needle positions. Doing so also offers the opportunity to add borders if desired.
A 99X144 version was programmed, and the central 71 stitch width was tested, likely suitable for an accessory ie a scarf  Those side-by-side white pixels are “OK” since they are in turn sided by black pixels and do not repeat for more than 2 rows.
At some point, one needs to commit to actual knitting. The first proof of concept swatch was knit in a softly spun, shiny rayon that had a slight tendency to split during knitting and steams and sets nearly completely flat.  This swatch is knit using a 2/8 wool, retains its texture after steaming and pressing, and exhibits the usual roll to the knit side at the top and bottom of the piece, and to the purl side along the vertical side edges. The variations in the 3D surface that can happen with some tuck patterns appear here and are retained.  A brief look at Gradient filter included in post on Truchet inspired tiles.
Restricted use images may also be built from scratch.
Large published illusion-style designs even if beginning as black and white when scaled down in size can lose definition as a result rendering them speckled, needing a lot of pixel cleanup, or completely unusable.
This first attempted DIY version begins with a 31X31 repeat. The odd number allows for a corner-to-corner start. The lines are drawn using the straight line tool, with pencil size alternating between one and 2 pixels Using mirror X-1, Y -1 to 61X61 trimming by a single pixel and width and height for routine tiling avoids lots of doubled pixels. The final repeat, with small single pixels placement edits, is now 60X60  repeated in height only it could be used for perhaps a scarf, with or without solid borders at the bottom, top, and sides.   Drawn in repeat X3 in both X and Y directions it produces a 180X180 file large enough for a blanket, with a bit of wiggle room to add a narrow solid color frame if desired.      The design may be knit as fair isle for a quick initial test or for a final piece since the floats are all very short or knit as DBJ to produce a no-roll final fabric without floats.
In this test, softly spun rayon and heathery wool were used, resulting in a surprising color mix when compared to their original colors. There were a few spots where the rayon fiber split and knit with the contrast. The end needle selection was off, so there are tiny eyelets in some places where the contrast was not knit on the side edge, and the fabric separates a bit.  A variation for a different vertical repeat can easily be isolated from tiled drawings. This additional sample was also knit as a fair isle, with end needle selection on. Suitable for punchcard knitting: a 12-stitch simple geometric repeat visualized X12 modified using drawing X12 in random repeat for electronic machines.  20X16 30X30 When the planned illusion is simple line distortion
18X18 “Café Wall” distortion tested on a 60 stitch width, the bottom is double stranded birdseye DBJ with a shift to single strands at the top. The single plies produce a wider, softer knit imagining a wider piece 10X10 repeat Knit as DBJ, in 2/20 wool single strand, at as tight a tension as possible to allow for proper stitch formation, the bleed through is quite visible, the swatch is also 60 stitches wide There is discussion online whether adding a single row of a contrasting color heightens the illusion, a 9X10 repeat adding a third color
Shifting gears, a different 18X18  visualized X 9 modified using random  nearly the width of the full needle bed, 172X169 A 24-stitch repeat accomplishes an optical illusion of sorts. If only it would work for creating origami-style pleats!
A former Ravelry query prompted these designs,
22×22

22X3066X60

44X5442X46
from a weaving draft, 46X46 66X66 Johann Karl Friedrich Zöllner (1834 – 1882), a German astrophysicist with a keen interest in optical illusions was inspired by a cloth pattern that he observed in his father’s factory and first published the illusion that bears his name in the journal Annalen der Physik in 1860. The acute angles formed by the intersections of the short and long lines make the spaces between the diagonals appear to expand.
My knittable adaptation: the 84X84 repeat Building tiny shapes into secondary ones inspired by weaving drafts
56X148 110X225 Removing doubled vertical segments, 106X225 Adding colors to black and white pngs following the tip by the developer in the post comments:
Choose a black-and-white repeat, in this case, a 36X9 pixel repeat  Double-click on one of the two colors to protect/lock it Double-click on it again, and the lock disappears, the color is no longer protected.
In the palette, use + to add a new color, this may be repeated more than once to add more colors or go to colors, set the number of colors to a number, ie. 6, for a random palette group that may, in turn, be edited to other values.   Double-click on the rectangle tool to draw filled rectangles  In rectangle options, above the palette icon, there are toggle buttons for Horizontal and Vertical, remember to protect a color  Once your selection is made, draw the filled rectangle across a selected width and height while keeping the protected color intact. Draw the result in repeat to check for alignment the protected color may be toggled to white  If the designs are to be programmed for multiple color slip stitch or DBJ there are rules to be observed, and there may be restrictions on whether each palette color will be recognized as a third or fourth color by the download program ie. when using Ayab, where no two colors may occur in the same range of 8-bit values. For 4 colors, the ranges would be 0-63, 64-127, 128-195, and 196-255.
The img2track partial window with the associated color assignments for the first vertical variation.  The horizontal choice allows one to play with selections possibly matching yarn colors in fair isle knitting,          only 2 colors per row may be used, here the A feeder yarn remains fixed Remember to unlock the previous color choice if protecting new segment selections.
Visualizing possible FI striping results in progress 

More Truchet inspired tiles, a brief look at gradient filter use


The latest ArahPaint user manual download,  updated on February 9, 2023, includes added directions for drawing in repeat including a truchet/Smith tile variant.
This post will not provide specific how-tos, the pngs can be downloaded and used to perhaps test Arah’s features or to aid in finding a personal, preferred method for manipulating DIY designs.

There are additional Arahpaint options for altering designs in width and height which may be used progressively on the same image. Some in the group of edits and rotations are evocative of the Passap console’s Alter programming loop.   Lower in the same menu, diagonal mirroring opens yet another series of possibilities. These samples were produced in a Passap workshop, using the console Alter, add commands. Note that mirrored areas have identical pairs of side-by-side pixels at their meeting points,  while ArahPaint offers an opportunity to change that, a thing to keep in mind when returning to simpler motifs such as those used for tuck stitch. Performing the rotations, however, will render the result with an odd number of pixels in width, often making them less likely to be usable in punchcard models  My area of interest has been primarily and still is in creating textures beginning with small repeats that may grow in complexity and size to make the structures programmable and thus easier to track and execute.
Presently I rarely engage in multiple color motif work ie fair isle or other large-scale textile pattern applications but my curiosity in applied techniques has led me down this potential giant rabbit hole.
The speed and ease of drawing variations for repeats using ArahPaint make the process addictive.
The source of inspiration for this design series is “The curse of truchet tiles”.
When recognizable circles are a goal, these tiled motifs often begin with starting sizes as wide as the 24-stitch standard punchcard repeat limitation, and the manipulated larger motifs are suitable only for electronic machine models capable of accepting software downloads. Adding lines and extra dots of circles
Isolating fractions and individually rotating segments to draw again rendering larger repeats More info on knitting DBJ using more than 2 colors per row:
DBJ: more than 2 colors per row 3 3/22
Img2track_multiple colors per row dbj, each color knitting only once 1/21
DBJ: more than 2 colors per row 2   12/19
DBJ: more than 2 colors per row 1 12/19
Adding one more color to the last repeat whole planning a knitting a test at a max of 3 colors per row knittable in a single track 
The img2track window Positions of the respective yarns in the color changer as suggested by the program result in accuracy prompts by the machine on which of the respective colors should be in use at any one time.  Planning gauge-dependent pieces using large repeats requires large test swatches, generally a minimum of 100 stitches by 100 rows.
Adding and varying the colors in the design draft to match the yarns to be used in the repeat helps to visualize the possible result, and allows for using the sequence suggested by the download program to help track the proper color changes.
The test here is 60 stitches wide, knit one full repeat in height, measuring 7.5 inches in width by 11.75 inches in height after resting. On rows where the colors for the dots and squiggles may knit in small parts or not at all, there will be a preselection of large groups of needles such as seen here.  Birdseye setting is used to decrease motif lengthening. The img2track user manual describes the steps necessary for downloading to different model knitting machines and possibly using more than single tracks. A series inspired by another of the tiles in the linked publication   
Similar to one of the source repeats, increasing the balance between light and dark Open areas or specific rotations in the visual space may be created by eliminating or rotating individual segments.
To change the mirroring type, place a mouse pointer over the arrow that you want to change, and press the left mouse button. The arrow will jump to the next mirror type. With only 5 mirror types, you will get what you want in a maximum of 4 clicks. If you press the right mouse button, it will put the arrow to the default orientation. The result of course is dependent on the original file choice. Combining duplicating repeat variations with drawing in repeat helps one develop a DIY library of favored tilings. Begin with a possible background Tools/ Find Repeat  Aiming for knot variations, a cross-over to add to segments of the ground, manipulating individual tiles, adding copy and paste More play with manual duplication of tiles as opposed to drawing in repeat Combining different scale repeat segments, starting with 54X36 pixels  And it’s not all about just circles, a 36X36 pixel design to play with A reminder, if the plan is to add color in continuous lines, it is best to place the colors after the full design repeat has been developed rather than on the individual starting tile segments, For some, this would be considered a design feature.  A very different look may be achieved using any of the available filters. A square image of any size may be filled with a color gradient while keeping in mind the fact that knitting is very low resolution and the maximum number of available needles for patterning is 200 or under.
Beginning with a 20-stitch file. Below the software tool options on the right, click on the tool in the area marked with the red shape to produce a design that may then in turn be drawn in repeat No edges were cleaned up in this view. The design meets the maximum 200 pixels/needles size Going larger, an 80-pixel start to end with a 160-pixel blanket or tapestry suitable image with some wiggle room for adding a frame/border. The concept may be used in various densities for use in an accessory such as a scarf, spaced and colored to your liking, or even sweater bodies and sleeves planned specifically based on stitch and row counts for each of the pieces involved. Filters may also be applied in developing other stitch structures in addition to working with color motif designs. That topic merits its own post.

A “fast pattern” user guide shared by the ArahPaint 6 developer October 2023 which demonstrates how to use filters with associated designs https://www.arahne.eu/pdf/fastpattern-EN.pdf

Truchet/Smith inspired designs 2 meet ArahPaint

Added explorations of the Smith tiles.
Most common knitting machines capable of accepting electronic pattern downloads have a number of needles ranging between 180 and 200 on either of the available beds.
Punchcard machines have a 24-stitch constraint in width for repeats that are selected in fixed locations on the top bed, while height row counts can be endless if one keeps joining punchcards together.
The narrow repeat width does not allow for impactful tiling such as seen in the truchet variants.
A 24-stitch initial repeat can be created, but will not align properly ie. here:
the 24X56 png, colored in and repeated in width and height X3. It can, however, be drawn in repeat using ArahPaint to produce a new and successful design repeat ie this 48X112 pixels version and its appearance in repeat on a larger canvas: Electronic machines can be used to knit large, non-repetitive designs based on the number of needles available on their beds.
Unless knit-from-screen software is used, the size of the files downloaded to specific machine models varies depending on both the software used and the knitting machine’s available memory.
One of the issues using online generators as seen in the previous post is that the files tend to be high in pixel counts and rendered in RGB mode.
Changing image modes to BW indexed and scaling the large design to a smaller version have an effect on the edge definition of the shapes and are likely to require clean-up to remove or add pixels.
Beginning with small and clearly defined forms, tiling repeatedly to larger ones will allow for results that can be cropped to specific sizes with clean edges along the secondary shapes.
Beginning the proposed method with the Smith tile, a place to start is to choose the smallest successful circular forms.
The repeat works using quarter squares, so the file size needs to be an even number of pixels in width and height.
Getting a sense of the appearance of the edges of small circular shapes, with the intent of choosing one for fabric development, beginning with an 8-pixel diameter, and increasing it in turn by 2 pixels at a time to 20.  The 8-pixel circle is chosen for this exercise.
Following the steps outlined by the developer in the video viewable on Instagram and Facebook, open a new picture, and set the image size to 8X8 pixels The goal is to create a clean design outline forming shapes that may be filled in to yield the secondary tiling designs.
To zoom in or out in ArahPaint: use Shift+ or – on Mac, click on the magnifying lens icons in the toolbox, use the command key and roll the mouse wheel or scroll along the vertical center line of the mouse, or press any number from 0-9 on the keyboard to change zoom directly to that level (1 means 100%, 6 means 600%, O means 1000%).
In RGB mode even if the shapes are drawn in black, when converted to indexed BW some pixels will be lost. If any lines are broken, control in using the bucket fill tool on only selected areas is lost.
To begin with, set the number of colors and the pencil size to one pixel   Use the draw circle tool, and select drawing from the center Draw a quarter circle starting on the bottom right of the square, and ending in the center of this image. In this case, there will be 4 white pixels on the left of the line, half the diameter of the planned circle. Click on the pencil tool to set the image. Repeat the Process, drawing a mirrored image beginning on the upper left pixel position, and ending in the center of the image as well Open the drawing in the repeat window and set the number of repeats vertically and horizontally, done here first in standard alignment. Do not click on random, select new picture, OK. If satisfied, save the png. Undo may be used to revert to the original file unless new picture was left unchecked.
For the Smith tile repeat, do click on random to apply different rotations of the repeat.
Load the 8X8 file
Zoom out to check the pattern and view changes adequately
Open the draw in repeat window
Click on random, and the proposed rotations will appear as symbols,  click on new picture and then on OK to view the result, a file that will now be 32X48 pixels. The result can be saved. To preview other arrangements:
choose undo, return to draw in repeat, random, preview, and with each repeated click on random a new image will appear on the screen. At any point select a new picture, OK, and save the result.  The final png for test knitting for my test swatch Its segments bucket filled with black  If bucket fill fails selectively and floods the whole image, return to drawing in repeat and click on close. Return to the image and continue the fill-in process.
Developing a larger repeat to select an area of interest while keeping in mind the maximum needle width of 200. This repeat is perhaps usefully cropped to blanket size.  Seeking a shorter and narrower motif for a scarf, in the range of 60 to 100 pixels in width that may not require too many tracks when programming the 930, the same 32X48 design is drawn in repeat X4 in width, X2 in height to 128X96 pixels. The above is split directly in half vertically for this exercise, rendering two files, each composed of 64X96 pixels. The left half,   and the right Checking vertical alignments and committing to the one on the right for the test swatch, knitting on 60 stitches for 120 design rows, using KCI, and starting with dark color from left.    That shape in blue that looks almost rectangular is actually not quite circular in the repeat, seen here color-reversed on the bottom right, with the definition also slightly lost in the knit due to the stitch size and birdseye stitches twist.  Comparing the 3 swatches in scale and shape definition: A tiny repeat formed with a thicker line Drawn in random repeat Dividing shapes into symmetrical segments is easy after configuring grid properties, in this case into thirds 12X12 in repeat adding an outline to change the weight of the lines by a single pixel all over without using more specific options Using the filled in double circle 18X18 repeats drawn in repeat While the definition of true circular shapes may be an issue for some when knitting the Smith variant, others may enjoy variations made by playing with other shapes and angles, here a 16-pixel square was divided into quarters adding a single pixel contour combining quarter circles sith full squares   Building larger repeats with interwoven intersections Playing with adding colors. In many instances when tiles are drawn in repeats requiring rotations of the original file, coloring in needs to be done after the final image has been composed.   Color exchanging fine black outlines to white, or filling the white background with black in order to reduce files for knitting no more than 3 colors per row.  The more complex designs become exponentially larger, require electronic downloads, and must meet the limitations of machine memory. The maximum equivalent for pixel per stitch is 200 pixels in width on 4.5 mm knitting machines, and 180 for Passap, with the possibility of separating the width and length into panels for large pieces ie tapestries, or blankets. Long vertical design segments, depending on their height, may also need to be separated in steps for programming them to produce narrow, long, pieces such as scarves or shawls.
The truchet triangles pose a different issue in knit design.
Quilters are familiar with block designs easily found in print and online that technically may be broken down into triangular blocks joined and meeting to form sharp points. Truchet in his publication used half-square triangles and assigned letters to the segments,   providing alphabetical references in illustrations for the permutations,  all far easier to achieve nowadays with the aid of software.
In ArahPaint, begin with choosing a square size, in this instance, 8 pixels by 8 pixels, matching that in the exercise using circles, and draw a triangle filling the canvas from corner to corner Drawing in repeat, the choice is made to repeat the triangles twice in both width and height, the preview symbols for the rotations of the shape are illustrated pointing in the same direction by default.  Clicking on any of those half-arrow shapes will rotate the specific shape in the tiled design, this becomes an action that may be influenced manually.  Selecting new image will render this,  which illustrates what happens when those triangles are used in knit motif designs. Inevitably, there will be areas where corner pixels meet to join others and the choice will need to be made between using the original or the color-reversed version of the repeat. Designing for a maximum 200-pixel design, the number of available needles on Japanese knitting machines, and continuing with random selections, paste 25 times in each direction, ultimately saving one of the new images:
its color reversed version Deciding on the first, an isolated area can be cropped to be used in an accessory ie a 72-stitch scarf, retaining full triangles, using the full 200-pixel height. Wanting to retain a 96-row max height for use on the 930, what happens when repeats line up vertically?  the isolated 72X96 design The assumption is that any change in vertical simple repeats will line up forming new triangles at the intersections not visually interpreted as patterning errors, the above repeated 3 times in height to 72X288 Committing to a test swatch: the wool ply is 2/13, and the space dyed rayon 20/2 and thinner in appearance. The contrast is not high, to begin with, and since the sample is knit as DBJ, as a result of the difference in yarn thickness the dark color bleeds through behind the lighter, reducing that contrast even further.
The places where the single pixels at the individual shape corners meet other shapes in the repeat can still be easily located.
The sample repeat size is 68X96 pixels, designed to include 2-stitch vertical borders drawn with dark pixels, the knit carriage was set to KCII, which allows the formation of distinct single color edges  Another alternative: beginning with a 9X9 repeat, drawn in repeat to 225X225, shapes do not touch in this rendering,  but do if color-inverted.  Isolating a repeat from the “floating” triangles, 45X81 tiled X3 to 45X243 may look ok but aside from the issue of choosing visually floating shapes vs still touching ones,  the big problem to be considered is the fact that for the machine KRC color separation to happen correctly, the repeat downloaded must be an even number of rows. A workaround may be to double the original height to 162 rows prior to programming it since one cannot use double height and KRC buttons at the same time in many machine models. Pursuing personal preferences can be endless. I am increasingly fond of the repeat that began with the 8X8 square.
Working with quarter-filled segments:  multiplied by 20 in each direction to a 200-pixel repeat. Drawn using random/ preview/ prior to saving the file  Its color reversed view