Method and apparatus for converting color spaces and multi-color display apparatus using the color space conversion apparatus
First Claim
1. A method of converting an m-dimensional color space having first through m-th input color components into an n-dimensional color space having first through n-th output color components, m being less than n, the method comprising:
- extracting, using at least one processing device, respective first through m-th intermediate color components and extracting respective m+1-th through n-th intermediate color components by linearly combining the first through m-th input color components;
analyzing the m+1-th through n-th intermediate color components determining whether m+1-th through n-th intermediate color components are within a specified dynamic range for the m+1-th through n-th output color components; and
compensating the first through n-th intermediate color components, to obtain the first through n-th output color components, based on a result of the analyzing and consideration of a dynamic range of the m+1-th through n-th intermediate color components being different from a dynamic range of the first through m-th input color components.
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Abstract
A method and apparatus for converting an m-dimensional color space comprising first through m-th input color components to an n-dimensional color space comprising first through n-th output color components. specified A method of converting an m-dimensional color space having first through m-th input color components into an n-dimensional color space having first through n-th output color components, m being less than n, includes: extracting first through nth intermediate color components by linearly combining the first through m-th input color components; determining whether m+1-th through n-th intermediate color components are within a specified dynamic range and compensating the first through n-th intermediate color components when signal values of the m+1-th through n-th intermediate color components are not within the dynamic range to obtain the first through n-th output color components.
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Citations
32 Claims
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1. A method of converting an m-dimensional color space having first through m-th input color components into an n-dimensional color space having first through n-th output color components, m being less than n, the method comprising:
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extracting, using at least one processing device, respective first through m-th intermediate color components and extracting respective m+1-th through n-th intermediate color components by linearly combining the first through m-th input color components; analyzing the m+1-th through n-th intermediate color components determining whether m+1-th through n-th intermediate color components are within a specified dynamic range for the m+1-th through n-th output color components; and compensating the first through n-th intermediate color components, to obtain the first through n-th output color components, based on a result of the analyzing and consideration of a dynamic range of the m+1-th through n-th intermediate color components being different from a dynamic range of the first through m-th input color components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for converting an m-dimensional color space having first through m-th input color components to an n-dimensional color space having first through n-th output color components, m being less than n, comprising:
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an intermediate color component extractor extracting respective first through m-th intermediate color components and extracting respective m+1-th through n-th intermediate color components by linearly combining the first through m-th input color components; a dynamic range comparator analyzing the m+1-th through n-th intermediate color components determining whether the m+1-th through n-th intermediate color components are within a specified dynamic range for the m+1-th through n-th output color components; and a color component compensator compensating the first through n-th intermediate color components, to obtain the first through n-th output color components, based on a result of the analyzing and consideration of a dynamic range of the m+1-th through n-th intermediate color components being different from a dynamic range of the first through m-th input color components. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A color display apparatus for displaying an image signal having first through n-th output color components, comprising:
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an intermediate color component extractor extracting respective first through m-th intermediate color components and extracting respective m+1-th through n-th intermediate color components by linearly combining first through m-th input color components, m being less than n; a dynamic range comparator analyzing the m+1-th through n-th intermediate color components determining whether the m+1-th through n-th intermediate color components are within a specified dynamic range for the m+1-th through n-th output color components; a color component compensator compensating the first through n-th intermediate color components, to obtain the first through n-th output color components, based on a result of the analyzing and consideration of a dynamic range of the m+1-th through n-th intermediate color components being different from a dynamic range of the first through m-th input color components; and a display unit including n optical sources emitting light of wavelengths corresponding to the n output color components. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A method of displaying an image signal having first through n-th output color components, the method comprising:
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extracting, using at least one processing device, respective first through m-th intermediate color components and extracting respective m+1-th through n-th intermediate color components by linearly combining first through m-th input color components, m being less than n; analyzing the m+1-th through n-th intermediate color components determining whether the m+1-th through n-th intermediate color components are within a specified dynamic range for the m+1-th through n-th output color components; compensating the first through n-th intermediate color components, to obtain the first through n-th output color components, based on a result of the analyzing and consideration of a dynamic range of the m+1-th through n-th intermediate color components being different from a dynamic range of the first through m-th input color components; and emitting light of wavelengths corresponding to the n output color components.
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27. A color conversion method, the method comprising:
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extracting, using at least one processing device, a CMY signal having cyan (C), magenta (M), and yellow (Y) color components from an input RGB signal having red (R), green (G), and a blue (B) color components by linearly combining the input R, G, and B color components; calculating respective intermediate color components of the R, G, B, C, M, and Y color components and scaling the respective intermediate components of the C, M, and Y color components; determining at least one dynamic range of the scaled C, M, and Y intermediate color components, and analyzing at least one of the scaled C, M, and Y intermediate color components to detect a signal with a dynamic range which exceeds the determined dynamic range, which is a dynamic range for the m+1-th through n-th output color components; and compensating at least one of the R, G, B, intermediate color components and at least one of the scaled C, M, and Y intermediate color components using the detected signal based upon consideration of a dynamic range of the C, M, and Y intermediate color components being different from a dynamic range of the input R, G, and B color components.
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28. A color conversion method, the method comprising:
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determining first and second coefficient groups usable to extract from an input RGB signal having red (R), green (G), and blue (B) color components intermediate color components of a CMY signal having cyan (C), magenta (M), and yellow (Y) color components and of an RGB signal having red (R), green (G), and blue (B) color components, the CMY signal and the RGB signal being extracted from the input RGB signal; linearly combining, using at least one processing device, R, G, and B color components of the input R, G, and B signal and, using the first and the second coefficient groups, to extract intermediate color components of the R, G, B, C, M, and Y color components; scaling the intermediate color components of the C, M, and Y color components; analyzing the scaled intermediate color components of the C, M, and Y color components determining whether signal values of the scaled intermediate color components of the C, M, and Y color components are within a specified dynamic range for the m+1-th through n-th output color components; and compensating at least one of the intermediate color components of the R, G, and B color components and at least one of the scaled intermediate color components of the C, M, and Y color components based on at least one of a small color component and a large color component of the scaled intermediate color components based on a result of the analyzing and consideration of a dynamic range of the m+1-th through n-th intermediate color components being different from a dynamic range of the first through m-th input color components.
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29. A method of converting an m-dimensional color space having first through m-th input color components into an n-dimensional color space having first through n-th output color components, m being less than n, the method comprising:
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extracting, using at least one processing device, first through n-th intermediate color components by linearly combining the first through m-th input color components, including performing a compensating of the first through m-th input color components to generate the first through m-th intermediate color components thereby reducing image degradations due to manufacturing variances; and compensating the first through n-th intermediate color components based on an analyzing of the m+1-th through n-th intermediate color components determining that signal values of the m+1-th through n-th intermediate color components are not within a specified dynamic range for the m+1-th through n-th output color components, wherein a dynamic range of the m+1-th through n-th intermediate color components is different from a dynamic range of the first through m-th input color components.
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30. A method, the method comprising:
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analyzing at least one of an m+1-th through n-th intermediate color components, of respectively extracted first through m-th and m+1-th through n-th intermediate color components, with the analyzing determining whether the at least one m+1-th through n-th intermediate color components includes a signal value outside a specified dynamic range for the m+1-th through n-th output color components; and compensating, using at least one processing device, at least one of the first through m-th intermediate color components, to obtain the first through n-th output color components, based on a result of the analyzing and consideration of a dynamic range of the m+1-th through n-th intermediate color components being different from a dynamic range of the first through m-th input color components. - View Dependent Claims (31, 32)
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Specification