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2008
IEEE

A Cue to Shading: Elongations near Intensity Maxima

12 years 4 months ago
A Cue to Shading: Elongations near Intensity Maxima
The human visual system is often able to recognize shading patterns and to discriminate them from surface reflectance patterns. To understand how this ability is possible, we investigate what makes shading patterns special. We study a statistical property of shading patterns, namely that they tend to be more elongated near intensity maxima. Second-order derivatives of shading and of surface height are compared, and it is shown that intensities typically have an elongated structure relative to surface heights, and this elongation is more extreme near intensity maxima. This elongation property is formalized in terms of a skewness statistic on
Daria Gipsman, Michael S. Langer
Added 29 May 2010
Updated 29 May 2010
Type Conference
Year 2008
Where CRV
Authors Daria Gipsman, Michael S. Langer
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