"Duotone Composite Mosaic #7905"

Digital Print, 13" x 10" (unframed), 2009.

A duotone mosaic is one where each "tile" uses precisely two colors. This 30 x 22 example showcases our algorithm for constructing duotone mosaics which are composites constructed from two identically sized thumbnail photographs. We use diffusion limited aggregation to composite the foreground portrait over the block background sunset. Note that each "tile" can be further decomposed into 41 x 41 smaller singly colored tiles, whence physically this piece could be realized using a sufficient number of such smaller tiles in a limited number of colors.

"Duotone Composite Mosaic #7310"

Digital Print, 12" x 6" (unframed), 2009.




A duotone mosaic is one where each "tile" uses precisely two colors. This 40 x 20 example showcases our algorithm for constructing duotone mosaics which are composites constructed from two identically sized thumbnail photographs. We use diffusion limited aggregation to composite the foreground condor over the block background mountains. Note that each "tile" can be further decomposed into 21 x 21 smaller singly colored tiles, whence physically this piece could be realized using a sufficient number of such smaller tiles in a limited number of colors.

Gary Greenfield, Professor of Mathematics and Computer Science
Department of Mathematics and Computer Science, University of Richmond, Richmond, Virginia, USA


Many of my computer generated algorithmic art works are based on visualizations of simulations based on mathematical models of natural processes. Examples include cell morphogenesis, swarm behavior, and diffusion limited aggregation. By controlling various drawing attributes, and freely using digital image compositing techniques, I try to focus the viewer's attention on the complexity underlying such processes.