Method for defining chromaticity regions according to luminance levels and adjusting chromaticity of images accordingly
AssigneeWeltrend Semiconductor Inc.
InventorsTsung-Ming Wang, Hsi-Chun Huang, Chao-Chee Ku
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Abstract
Image processing includes defining chromaticity regions according to different luminance levels, and when the luminance of a pixel corresponds to one of the luminance levels, and a chromaticity vector of the pixel is within a chromaticity region corresponding to the luminance level, adjusting the chromaticity vector of the pixel.
Claims29
A method for defining a plurality of chromaticity regions according to luminance levels and adjusting chromaticity of images accordingly, the method comprising the steps of:
- (a) defining a plurality of chromaticity regions according to a variety of luminance levels;
- and
- (b) multiplying an original chromaticity vector of a pixel with an adjusting factor to form an adjusted chromaticity vector, the original chromaticity vector of the pixel corresponding to one of the chromaticity regions set in step (a), which corresponds to a luminance level of the pixel.
A method for defining a plurality of chromaticity regions according to luminance levels and adjusting chromaticity of images accordingly, the method comprising the steps of:
- (a) defining a plurality of chromaticity regions according to a variety of luminance levels;
- and
- (b) rotating an original chromaticity vector of a pixel toward a predetermined chromaticity vector by an adjusting angle to form an adjusted chromaticity vector, the original chromaticity vector of the pixel corresponding to one of the chromaticity regions set in step (a), which corresponds to a luminance level of the pixel.
A method for adjusting chromaticity of images, the method comprising the steps of:
- (a) determining whether an original chromaticity vector of a pixel is within a predetermined chromaticity region;
- and
- (b) selecting an adjusting angle in an adjusting group consisting of a plurality of adjusting angles, and rotating an original chromaticity vector of a pixel determined to be within the predetermined chromaticity region in step (a) toward a predetermined chromaticity vector by the adjusting angle to form an adjusted chromaticity vector.
Dependencies are inferred from the claim text.