This page contains a simulation of the process that Andy Warhol used in 1973 for his contribution to the "New York Collection for Stockholm."
Warhol started with a line drawing of Mao, and then had 300 photocopies made, each photocopy being of the one just previously made. Each copy was distorted a version of the previous one, due in part to human imprecision in placing the version to be copied and in part (apparently) due to deliberate distortions introduced to inhibit counterfeiting, making the work an early example of feedback-based glitch art.
The image here is the result of applying the simulation to that line drawing of Mao. (More about the simulation.)
I have created a simulation of the original process, taking into account rotation, movement, and scaling that might occur during the copying. You can try out the simulation below, using either a copy of Warhol's Mao, or your own image. Since Warhol's Mao is a line drawing, the simulation gives you the option of stylizing the image to imitate the look of a line drawing. Note: all this is done in your browser: your images stay on your device.
Thanks to Peter Wang for taking me to see the traveling exhibit of "Andy Warhol—from A to B and Back Again" at SFMOMA, where we saw some of the original copies, as well as for stimulating discussion.
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Public domain image of Andy Warhol from Wikipedia
