OVERVIEW OF PHOTOSHOP FOR SINGLE THREAD CONTROL WEAVING
A black (hexadecimal #000000) and white (hexadecimal #ffffff) image file created in Photoshop represents the drawdown of a weave draft, with each pixel corresponding to the intersection of a warp and a weft. Typically, either the height or width of the image will be sized to reflect the number of warp ends, although some strategies may start off with double or half the number of warp ends.
Each color in the image corresponds to a particular structure. Because most digital images have 256 colors, it is necessary to reduce this number down to the number of the planned number of weave structures. Again, there are multiple strategies to accomplish this color reduction, each with its own idiosyncrasies.
After reducing the number of colors in the image comes overlaying or filling each color with its corresponding pattern or weave structure. These patterns are constructed separately, and accumulate slowly in a Photoshop pattern library.