منابع مشابه
Illuminant estimation as cue combination.
This work briefly describes a model for illuminant estimation based on combination of candidate illuminant cues. Many of the research issues concerning cue combination in depth and shape perception translate well to the study of surface color perception. I describe and illustrate a particular experimental approach (perturbation analysis) employed in the study of depth and shape that is useful i...
متن کاملChromatic Adaptation and Illuminant Estimation
Chromatic Adaptation is the ability of the human visual system to approximately preserve the appearance of an object color, no matter which light “color” illuminates a particular scene. We perceive a white piece of paper as white, regardless whether viewed under a bluish daylight or yellowish tungsten light source. Similar effects can be observed with other color hues. Figure 1 illustrates this...
متن کاملIlluminant Estimation: Beyond the Bases
We describe spectral estimation principles that are useful for color balancing, color conversion, and sensor design. The principles extend conventional estimation methods, which rely on linear models of the input data, by characterizing the distribution or structure of the linear model coefficients. When the linear model coefficients of the input data are highly structured, it is possible to im...
متن کاملConsensus-based framework for illuminant chromaticity estimation
bstract. Several algorithms were proposed in the literature to reover the illuminant chromaticity of the original scene. These algoithms work well only when prior assumptions are satisfied, and the est and the worst algorithms may be different for different scenes. e investigate the idea of not relying on a single method but instead onsider a consensus decision that takes into account the repon...
متن کاملThe Chromagenic Colour Camera and Illuminant Estimation
A chromagenic camera takes two pictures of each scene. The first is taken as normal but a specially chosen coloured filter is placed in front of the camera when capturing the second image. The chromagenic filter is chosen so that the combined image makes colour constancy, or white point estimation easier to solve. The chromagenic illuminant estimation algorithm is very simple. We compute the ex...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2002
ISSN: 1534-7362
DOI: 10.1167/2.6.6