Lightness Constancy in Surface Visualization

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چکیده

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Poster: Lightness Constancy in Surface Visualization

Color is an effective and commonly used channel for displaying data in surface visualization. However, color is affected by shadows and shading, which convey depth and shape on surfaces. The human visual system has evolved constancy mechanisms for identifying color under varying illumination conditions. Lightness constancy allows people to accurately perceive colors in real shadows; however, it...

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Impossible shadows and lightness constancy.

The intersection between an illumination and a reflectance edge is characterised by the 'ratio-invariant' property, that is the luminance ratio of the regions under different illumination remains the same. In a CRT experiment, we shaped two areas, one surrounding the other, and simulated an illumination edge dividing them in two frames of illumination. The portion of the illumination edge stand...

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ژورنال

عنوان ژورنال: IEEE Transactions on Visualization and Computer Graphics

سال: 2016

ISSN: 1077-2626

DOI: 10.1109/tvcg.2015.2500240