Source : Free On-Line Dictionary of Computing

Single Image Random Dot Stereogram
     
         (SIRDS, originally "autostereogram") A {stereogram}
        composed of (coloured) dots which when viewed correctly
        appears three-dimensional.  SIRDs were invented by
        Dr. Christoper Tyler, Associate Director of the
        Smith-Kettlewell Eye Research Institute in San Francisco
        (1999).
     
        {FAQ (http://www.cs.waikato.ac.nz/~singlis/sirds.html)}.
        {Nice pictures
        (http://www.eleves.ens.fr:8080/home/massimin/index.ang.html)}.
        {Picture Gallery (http://h2.ph.man.ac.uk/gareth/sirds.html)}.
        {Vern Hart's SIRDS Gallery (http://www.vern.com/)}.  {SGI
        Gallery (http://www.sgi.com/free/gallery.html)}.
     
        (1996-11-06)