Stereovision Depth Perception /956 The ability to see objects in three dimensions although the images that strike the retina are two-dimensional,allows us to judge distance How do we see a 3-D world using only the 2-D retinal images? -We are able to see in 3-D because the visual system can utilize depth cues that appear in the retinal images
Stereovision / Depth Perception The ability to see objects in three dimensions although the images that strike the retina are two-dimensional, allows us to judge distance How do we see a 3-D world using only the 2-D retinal images? We are able to see in 3-D because the visual system can utilize depth cues that appear in the retinal images
Depth Cues Many depth cues have been discovered. Many of them,such as perspective,shading, texture,motion,and occlusion,are present in the retina of a single eye,and are thus called monocular depth cues(单眼线索). Other cues are binocular as they result from comparing the two retinal projections binocular depth cues(双眼线索)
Many depth cues have been discovered. Many of them, such as perspective, shading, texture, motion, and occlusion, are present in the retina of a single eye, and are thus called monocular depth cues (单眼线索). Other cues are binocular as they result from comparing the two retinal projections --- binocular depth cues (双眼线索). Depth Cues
Monocular Depth Cues /966 Depth cues that require the use of only one eye. Monocular depth cues include: o relative size CopyrightThe McGraw-Hill Companies,Inc.Permission required tor reproduction or display. Linear Perspective:Depth Cues ▣relative motion interposition 口 relative height 0 texture gradient relative clarity linear perspective
Monocular Depth Cues Depth cues that require the use of only one eye. Monocular depth cues include: relative size relative motion interposition relative height texture gradient relative clarity linear perspective
Depth Illusions /986 Our perception of depth may be tricked. Julian Beever's Sidewalk Chalk Art http://users.skynet.be/J.Beever/pave.htm
Depth Illusions Our perception of depth may be tricked. Julian Beever’s Sidewalk Chalk Art http://users.skynet.be/J.Beever/pave.htm
Binocular Depth Cues /96 Horizontal disparity(conventional stereopsis) Vertical disparity (induced effect) Monocular regions (da Vinci stereopsis) Interocular time delay (Pulfrich effects) The strongest binocular depth cue is the horizontal component of binocular disparity
Horizontal disparity (conventional stereopsis) Vertical disparity (induced effect) Monocular regions (da Vinci stereopsis) Interocular time delay (Pulfrich effects) The strongest binocular depth cue is the horizontal component of binocular disparity. Binocular Depth Cues