lec6 - Depth perception Cues used for coding depth in the...

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Depth perception
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Cues used for coding depth in the brain Oculomotor cues Visual cues accommodation Binocular vergence stereopsis Monocular motion parallax shading interposition size perspective
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Stereopsis, basic facts
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Two simple methods for creating stereo images stereo camera 12 swiveled regular camera
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fix x y x = y Vieth-Muller cirlce target fix x y x = y Target hits corresponding retinal points Target hits non-corresponding retinal points target Retinal disparity utilized for stereopsis
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Stereopsis, neuronal responses
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V1 cell response to drifting bars at varied stereo depths Figure by MIT OCW. -10 O 0.14 O 0 1 2 sec 3 O -1.13 -0.23 0 0.21 0.58 Di sp ar it y (d eg re e) De pt h (c m) +6.0 +4.0 +2.0 +1.5 +1.0 +0.5 -0.5 -1.0 -1.5 -2.0 -4.0 -6.0 -8.0 38 + _ 0
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V1 cell response to drifting bars at varied stereo depths Figure by MIT OCW. 0 1 2 3 4 O -1.13 -0.23 0 0.31 0.88 Di sp ar it y (d eg re e) De pt h (c m) +10.0 +8.0 +6.0 +4.0 +3.0 +2.0 +1.0 +1.0 -0.5 -1.0 -2.0 -4.0 -6.0 -8.0 38 + _ 0 R L 0 0.18 o 38 sec Key down
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Basic cell types for stereo Figure by MIT OCW.
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This note was uploaded on 11/11/2011 for the course BIO 9.07 taught by Professor Ruthrosenholtz during the Spring '04 term at MIT.

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lec6 - Depth perception Cues used for coding depth in the...

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