Psych 225 Nov 10_Space

Psych 225 Nov 10_Space - Perceiving space and depth The...

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Unformatted text preview: Perceiving space and depth The problem of perceiving distance • Demo The ambiguity of location in the picture plane Fig. 10-1, p. 230 Three sources of information about depth • Oculomotor cues • Monocular cues • Binocular cues Oculomotor cues Fig. 10-2, p. 231 Convergence Oculomotor cues • Convergence • Lens accomodation • Useful for perceiving location in depth for near objects (up to arm’s length) Monocular cues • Pictorial cues – Cues that can be depicted in a static 2D image, such as a painting • Occlusion • Relative size • Relative height • Texture gradient • Linear perspective • Atmospheric/Aerial perspective • Familiar size • Shadows • Examples Familiar size Fig. 10-4, p. 232 Most effective when other depth cues are absent Which coin is closest? Depth from shadows • Animation Monocular cues • Motion-produced cues – Motion parallax • Near objects are displaced more than far objects Motion parallax Fig. 10-8, p. 234 Table 10-1, p. 235 Binocular cues • Binocular disparity • Finger demo Fig. 10-11, p. 236 Stereopsis • The perception of depth resulting from information provided by binocular disparity • Creating the ‘illusion’ of depth – Stereoscope • Presents slightly different image to each eye Stereopsis...
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This note was uploaded on 01/09/2011 for the course PSYC 225 taught by Professor Staff during the Fall '10 term at UNC.

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Psych 225 Nov 10_Space - Perceiving space and depth The...

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