11.Pure Vision

11.Pure Vision - A Critique of Pure Vision Terrence...

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A Critique of Pure Vision Terrence Sejnowski HHMI Salk Institute University of California, San Diego
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"Regarding the central goal of vision as scene recovery makes sense. If we are able to create, using vision, an accurate representation of the three-dimensional world and its properties, then using this information we can perform any visual task" Aloimonos and Rosenfeld (1991) Goal of Vision “Its purpose is to build a description of the shapes and positions of things from an image." David Marr, Vision (1982)
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Backgammon 10 20 Chess 10 40 Go 10 80 Googol 10 10^2 Human Vision 10 10^8 Googolplex 10 10^100 Complexity of Vision
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Levels of Investigation
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Visual Pathways
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David Hubel
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7 Visual Cortex Hubel and Wiesel, 1969
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Simple Cells in Visual Cortex DeAngelis, Ohzawa and Freeman (1995) Hubel and Wiesel (1962)
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0 500 1000 1500 2000 2500 3000 0 0 500 1000 1500 2000 2500 3000 350 0 10 20 30 40 50 60 70 80 Firing Rate (Hz) Time (ms) Attention Modulates Firing Rate Desimone, 2001 “Not attended” “Attended”
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Glimcher, 2002 Reward Modulates Visual Responses
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Eye Movements
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11.Pure Vision - A Critique of Pure Vision Terrence...

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