Single Image Random Dot Stereogram
From Free net encyclopedia
A Single Image Random Dot Stereogram (SIRDS), or a rastergram, is a stereogram composed of (coloured) dots which when viewed correctly appears three-dimensional. SIRDs, originally autostereograms, were invented by Dr. Christoper Tyler, Associate Director of the Smith-Kettlewell Eye Research Institute in San Francisco. The acronym SIRDS was created by Dan Dyckman to describe these images, and first published in an issue of "Stereo World" magazine approximately 1989. Dyckman had seen an unattributed image by Tyler, began making his own. Dyckman was the first to begin popularizing them, and published a simple algorithm for making them. Others later began large-scale commercial operations, notably N.E.Thing company which went on to sell under the Magic Eye (tm) trademark.
Such images are sometimes called simply called stereograms. The term SIS (Single Image Stereogram) is also used.
See also
External links
- Vern's SIRDS Gallery
- 3-D and SIRDS images
- Color stereo – SIRDS
- 3D Single Image Stereogram discussion group
- This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL.
