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3-D Definitions before you start
4-D - Length, width, and depth are three dimensions. Time
becomes the 4th dimension when animation take
place...
Stereoscopic: A method of blending images of two slightly
differing perspective points into a single image giving the impression
of depth presence. When viewed properly they allow you to see
in 3-D. Example: Stereo cards, View-Master reels etc,... For
more on stereo pairs, see the Anaglyph link.
Auto-Stereoscopic - Most forms of 3-D, like virtual reality,
3-D movies, Stereo pairs, etc. require some sort of viewing apparatus
like goggles, glasses or a viewer. Auto-Stereoscopic is machinery,
goggle and glasses free so any passer by with 2 functional eyes
can see the 3-D effects.
Lenticulars -There is a layer of lenticles (or lenses) in
front of the image. They work as a viewer which self adjusts
to whatever distance you are from it. If you are looking at 4-D,
not only does it allow you to see the proper stereo views, but
also fluid animation, simultaneously...
Anaglyph- Stereo 3-D you see with red and blue glasses.
Stereo- 2 as in a pair. Stereo pairs are two perspectives
of an image that lets you see 3-D with glasses, projection, a
viewer, or other methods.
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