DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   Single Image Random Dot Stereogram
   autostereogram
   rastergram
   SIRDS
      <graphics> (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://cs.waikato.ac.nz/~singlis/sirds.html).
      Nice pictures
    (http://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://vern.com/).  SGI
    Gallery (http://sgi.com/free/gallery.html).
      (1996-11-06)