PSYC 363 Chapter Notes - Chapter 6: Hobbit, Retina, Sled
15 Mar 2017
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Depth sometimes depends on size information (relative size) S ize depends on retinal image size integrated with depth information. S ize consistancy visual angle: s ize of retinal image depends on object size & how far away it is. O bject appears same size, but retinal image changes size a s object moves. Need to know how far object is from other. S ize-distance scaling: calculation using retinal image size & depth information. Size constancy is due to the assumption that objects don"t change size. Therefore, if our retinal image increases, it must be because they are approaching. Without depth cues, an image of a certain size in the distance will suddenly appear very small. Texture gradient: as distance increases from us, the density of the texture gradient increases. Muller-lyer illusion: one line is strongly perceived as being shorter than the other.
