We introduce Modular Origami Halftoning, a set of techniques for representing continuous-tone greyscale images using a fixed set of origami modules folded from two-coloured paper. By arranging the modules to reveal different amounts of the paper's coloured side, each module can approximate the brightness of a single pixel from an image. We present two variations based on affixing a grid of disconnected modules to a backing, and one variation in which the modules interlock into a carpet, requiring no tape or glue.
Zhifu Xiao, Robert Bosch, Craig S. Kaplan and Robert J. Lang, "Modular Origami Halftoning: Theme and Variations," in Proceedings of Bridges 2015: Mathematics, Music, Art, Architecture, Culture, Kelly Delp, Craig S. Kaplan, Douglas McKenna and Reza Sarhangi, eds., Tessellation Publishing, 2015, pp. 61-68.