PSYB51H3 Chapter 6: Chapter 6
Document Summary
Because the retinas are in slightly different places, they always differ. Stereopsis is the primary example in humans, but convergence and the ability of two eyes to see more of an object than one eye sees are also binocular depth cues. Monocular cues to three-dimensional space: it is geometrically impossible for the visual system to create a perfectly faithful reconstruction of. Euclidean space, given the non-euclidean input we receive through our eyes: the best we can do is to use depth cues to infer aspects of the three-dimensional world from our two- dimensional retinal images. Size and position cues: projective geometry: for purposes of studying perception of the three-dimensional world, the geometry that describes the transformations that occur when the three-dimensional world is projected onto a two- dimensional surface. But the one on the bottom right seems smaller. This is because we infer, on the basis of relative height, that the rabbit at the bottom must be closer.
