Perceiving, measuring, and modeling materials

Christopher W. Tyler

doi:10.1117/12.2046104

10 March 2014 Perceiving, measuring, and modeling materials

Christopher W. Tyler

Proceedings Volume 9018, Measuring, Modeling, and Reproducing Material Appearance; 901802 (2014) https://doi.org/10.1117/12.2046104
Event: IS&T/SPIE Electronic Imaging, 2014, San Francisco, California, United States

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.

Citation Download Citation

Christopher W. Tyler "Perceiving, measuring, and modeling materials", Proc. SPIE 9018, Measuring, Modeling, and Reproducing Material Appearance, 901802 (10 March 2014); https://doi.org/10.1117/12.2046104

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