An example of the effect of manipulation of some of these perceptual rules on perception is demonstrated by the Ames Room. This is a physical room constructed in such a way as to create an illusion. Examine a photo taken of an Ames room and see if you can explain the illusion that you see.
Artists use depth cues in their paintings to produce the illusion of depth.
For practice in identifying depth cues, go to a site on the WWW that has a digitized version of a drawn or painted picture. Describe the depth cues that the artist uses to produce the illusion of three dimensions. URL of the image Description of the depth cues used in the image. You can also create your own image and send it to me. I will post it on this site with access from this page.