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Where is the sun?

Sun, J. Y. and Perona, P. (1996) Where is the sun? Investigative ophthalmology & visual science, 37 (3). p. 4283. ISSN 0146-0404.

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As illustrated by the well-known moon crater illusion, the human visual system uses a light-from-above assumption when it interprets shaded stimuli as 3-D shapes. Experimental results involving shaded stimuli also support this observation (Braun '90, '93; Kleffner & Ramachandran '91: Sun & Perona '93). While a light-from-above assumption is made for solving tasks involving ambiguous stimuli with shading consistent with both light-from-above and light-from-below, what assumption is made when lighting is from the side?

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Perona, P.0000-0002-7583-5809
Additional Information:© 1996 ARVO. Supported by: NSF, NIH Training Grant.
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Issue or Number:3
Record Number:CaltechAUTHORS:20150416-093902910
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:56713
Deposited By: Tony Diaz
Deposited On:16 Apr 2015 16:54
Last Modified:03 Oct 2019 08:16

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