3-D images are first explained by the idea of the stereoscope. A stereoscope is a device invented by Charles Wheatstone (1802-1875) which produces the illusion of depth just by using two slightly different pictures. This device became popular for people to use. The photographs are taken with two lenses that are seperated as the same distance as the eyes. The photograph on the left is shown to the left eye while the photograph on the right is shown to the right eye. Therefore, the images are shown in the same manner that the individual would view the image.
This idea is also used in 3-D films. The idea behind it, is that the left eye and the right eye images are presented at the same time on the screen to the viewers, but are slightly displaced from one another to create a sense of disparity. The images are shown seperately by coding the images for the left eye red and the right eye green or vice versa. The viewer then wears a set of glasses that act as filters with one lense colored red and the other colored green. Currently, 3-D films have been the new trend. They always seem to bring fun and entertainment for all people who view them.