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This paper proposed robust color constancy method for changing illuminant by using local chromaticity distribution and analysis of illuminant influence for each hue angle. First, changing in chromaticity distribution direction for each color with respect to various illuminant is analyzed using principal component analysis. Next, change in standard deviation of chromaticity distribution with respect...
The visibility of images displayed on mobile devices can significantly vary according to the lighting conditions. Generally, increasing the lighting scale produces a more compressed perceived color gamut. In addition, the compression rate of the perceived color gamut varies according to the hue angle. Therefore, this paper presents a method of compensating the luminance and chrominance according to...
Human vision can perceive object colors as being the same as colors under a white illuminant. However, images captured by a camera are influenced by the chromaticity of the illumination. Therefore, various illumination estimation algorithms have already been proposed for removing the chromaticity of illuminations in an image to improve the image quality. Most recently, NMFsc (nonnegative matrix factorization...
Color discrepancies between the left and right images from a stereoscopic camera cause many problems, including a reduction in the three-dimensional effect and increased visual fatigue. Thus, color matching of stereoscopic images is very important for three-dimensional display systems. Therefore, this paper proposes simultaneous color matching based on image decomposition. The stereoscopic images...
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