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Perceiving, measuring, and modeling materials
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Paper Abstract

This paper focuses in the interpretation of material properties of reflectivity and specularity assessed by the visual system under illumination consisting of both a focal and a diffuse component (the ‘sun-and-sky’ illumination assumption). This assumption provides for four kinds of luminance gradients: gradients of incident illumination, gradients of reflectivity, gradients of secondary self-illumination and gradients of shadowing. The analysis considers the dissociation of the material properties carried by specularity from the geometric properties of object shape, taking the sinusoidal surface as a canonical shape exemplar.

Paper Details

Date Published: 10 March 2014
PDF: 6 pages
Proc. SPIE 9018, Measuring, Modeling, and Reproducing Material Appearance, 901802 (10 March 2014); doi: 10.1117/12.2046104
Show Author Affiliations
Christopher W. Tyler, Smith-Kettlewell Eye Research Institute (United States)

Published in SPIE Proceedings Vol. 9018:
Measuring, Modeling, and Reproducing Material Appearance
Maria V. Ortiz Segovia; Philipp Urban; Jan P. Allebach, Editor(s)

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