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Color signal processing method and apparatus usable with a color reproducing device

A color reproduction and signal processing technology, applied in color signal processing circuits, color TV parts, color TV, etc., can solve problems such as inability to fully utilize the color gamut, quantization errors, and difficult color gamut mapping processing

Inactive Publication Date: 2006-01-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the color gamut of the color reproduction device cannot be fully utilized
Also, quantization errors occur in the gamut mapping process between the input color signal and the color reproduction device
Additionally, the application of highly complex algorithms for gamut mapping processing makes it difficult to implement gamut mapping processing on hardware

Method used

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  • Color signal processing method and apparatus usable with a color reproducing device
  • Color signal processing method and apparatus usable with a color reproducing device
  • Color signal processing method and apparatus usable with a color reproducing device

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Embodiment Construction

[0022] Embodiments of the present general inventive concept will be described in detail, examples of which are illustrated in the accompanying drawings, in which like reference numerals refer to like elements. The embodiments are described in order to explain the present general inventive concept by referring to the figures.

[0023] figure 2 is a schematic block diagram illustrating a color signal processing device 100 according to an embodiment of the present general inventive concept. Such as figure 2 As shown, the color signal processing apparatus 100 includes a color coordinate converter 120 , a primary color memory 140 , a primary color reconstructor 160 and a color gamut mapping part 180 .

[0024] The color coordinate converter 120 transforms the color coordinates of the input color signal into color coordinates in a device-independent color space. The device-independent color space may be a CIE-XYZ color space. Alternatively, other device-independent color space...

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Abstract

A color signal processing method includes calculating a mixing ratio for source primary colors of a color reproducing device through which an input color signal having standard primary colors is reproduced, mixing the source primary colors according to the calculated mixing ratio to obtain reconstructed primary colors, and transforming the input color signal to match a color gamut of the reconstructed primary colors and outputting the transformed color signal. Thus, the color gamut of the color reproducing device can be freely adjusted within a reproduction range thereof according to the input color signal.

Description

[0001] This application claims the priority benefit of Korean Patent Application No. 2004-46082 filed on Jun. 21, 2004, the entire contents of which are incorporated herein by reference. technical field [0002] The present general inventive concept relates to a color signal processing method and apparatus thereof, and more particularly, to a color signal processing method and apparatus that can optimally set a color gamut reproducible by a color reproduction device according to an input color signal. Background technique [0003] In general, color reproduction devices such as monitors, scanners, and printers have their own color spaces and / or color models suitable for their respective fields of application. For example, color printing devices use the CMY color space, color CRT monitors or computer graphics devices use the RGB color space, and other devices use the HIS color space. In addition, there is a generic CIE color space that can be applied to any type of device to d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/56H04N1/23H04N9/64H04N1/60
CPCH04N9/3182H04N9/3114H04N1/60H04N9/64
Inventor 金文喆申允澈李相珍
Owner SAMSUNG ELECTRONICS CO LTD