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  Does the brain know the physics of specular reflection?

Blake, A., & Bülthoff, H. (1990). Does the brain know the physics of specular reflection? Nature, 343(6254), 165-168. doi:10.1038/343165a0.

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https://www.nature.com/articles/343165a0.pdf (Publisher version)
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Blake, A, Author
Bülthoff, HH1, Author              
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1External Organizations, ou_persistent22              

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 Abstract: Images of artificial and natural scenes typically contain many highlights generated by mirror-like reflection from glossy surfaces. Until recently, computational models of visual processes have tended to regard highlights as obscuring the structure of the underlying scene. The truth is that, on the contrary, highlights are rich in local geometric information. Here we report that the three-dimensional appearance of a highlight on a computer-simulated stereoscopic curved surface affects observers‘ judgement of surface gloss. We also show that the 3-D appearance of a highlight affects the perception of surface curvature -- that is, it can force an ambiguous convex-concave figure to change state. We thus conclude that human visual analysis seems to employ a physical model of the interaction of light with curved surfaces, a model firmly based on ray optics and differential geometry.

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 Dates: 1990-01
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1038/343165a0
BibTex Citekey: 741
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Title: Nature
  Abbreviation : Nature
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 343 (6254) Sequence Number: - Start / End Page: 165 - 168 Identifier: ISSN: 0028-0836
CoNE: https://pure.mpg.de/cone/journals/resource/954925427238