THREE-DIMENSIONAL IMAGING SYSTEMS, NAMELY, COMPUTER SOFTWARE AND PROGRAMS FOR USE IN GENERATING THREE-DIMENSIONAL IMAGES, COMPUTERS PROVIDING FOR THE GENERATION AND REPRESENTATION OF THE THREE-DIMENSIONAL IMAGES, DIGITAL CAMERAS ADAPTED TO PROVIDE INPUT TO COMPUTERS AS AFORESAID, RECORDING MEDIA, NAMELY PRE-RECORDED COMPACT DISCS AND PRE-RECORDED FLOPPY DISCS BEARING RECORDED IMAGES GENERATED BY WAY OF THE AFORESAID COMPUTER SOFTWARE AND PROGRAMS, COMPUTERS, AND DIGITAL CAMERAS