3-D Definitions before you start

3-D - Length, width, and depth are three dimensions.

4-D - Length, width, and depth and time becomes the 4th dimension when animation takes 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...

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.

Anaglyph- A method of viewing stereo pairs with red and blue glasses.

Polarized Projection- Another way to view stereo pairs. These glasses appear to have a grayish tint and were invented by Edwin Land of Polaroid.

Welcome, Click here when you are done...