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Fast and adaptive color-to-grayscale conversion
ACM SIGGRAPH 2006 Sketches on - SIGGRAPH '06, 2006Methods and systems, including computer program products, for determining a plurality of color clusters based on a plurality of pixels associated with a color image, the clusters being fewer than the pixels. A grayscale value for each one of a plurality of points in a color space is determined.
Mark A. Ruzon +3 more
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Fast Algorithm for HDR Color Conversion
2016 Data Compression Conference (DCC), 2016The paper addresses a problem of perceptual artifacts that appear in Y'CbCr non-linear luminance 4:2:0 HDR video. A computationally inexpensive method is proposed for converting the 4:4:4 HDR video to Y'CbCr 4:2:0 nonconstant luminance format. The method removes artifacts in areas with saturated colors.
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One-Stage Model for Color Conversion*
Journal of the Optical Society of America, 1972Description of a one-stage approximation to the color-conversion model of Richards and Parks (1971). The modified model proposes three channels for color vision, each with different center-surround sensitivities. In its strongest form, the model predicts that the gain-setting control that alters the sensitivities of each channel is solely a function ...
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Normalization factors in color space conversion
SPIE Proceedings, 2008The standard color space conversion equations usually do not explicitly account for a change in luminance. In an effort to understand color space conversion better, the color space conversion equations are derived from first principles. The solution shows how to calculate the RGB scale factors using xyY measured at a RGB triplet that is not restricted ...
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