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Method and apparatus for processing image signal

An image signal and signal technology, which is applied in image communication, color signal processing circuits, luminance and chrominance signal processing circuits, etc., and can solve problems such as deterioration of the resulting image signal quality.

Inactive Publication Date: 2013-06-19
SAMSUNG ELECTRONICS CO LTD
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When a resultant image signal is generated by compressing the image signal of the original image, crosstalk can cause the quality of the resulting image signal to deteriorate

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  • Method and apparatus for processing image signal
  • Method and apparatus for processing image signal
  • Method and apparatus for processing image signal

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Embodiment Construction

[0036] Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like parts throughout. The embodiments are described below in order to explain the present disclosure by referring to the figures.

[0037] Hereinafter, for example, legacy standards may mean standards related to image processing such as ITU-RBT.709. Luminance and chrominance image signals of legacy standards can represent luminance and chrominance signals Y'C' that can be defined by legacy standards b C' r .

[0038] RGB is an abbreviation for red, green and blue.

[0039] Primarily as a result of generating the luminance signal, crosstalk between the luminance signal and the chrominance signal as defined by conventional standards can arise. The physical unit representing brightness information is brightness, which is expressed as candela per square meter (cd / m 2 ). Generally, there is a linear proportional ...

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Abstract

A method and apparatus for processing an image signal includes an image signal encoding apparatus and an image signal decoding apparatus that use an independent luminance and chrominance image signal to reduce a crosstalk. The independent luminance and chrominance image signal may include a luminance signal and a chrominance signal. The image signal encoding apparatus and the image decoding apparatus may perform down-sampling or up-sampling on the chrominance signal. The image signal encoding apparatus and the image decoding apparatus may increase a compression efficiency of the independent luminance and chrominance image signal, by applying different quantization parameters and different bit-depths to the luminance signal and the chrominance signal, respectively.

Description

[0001] This application claims the benefit of priority of Korean Patent Application No. 10-2011-0136218 filed with the Korean Intellectual Property Office on December 16, 2011, the disclosure of which is hereby incorporated by reference. technical field [0002] The following description relates to a method and apparatus for processing image signals, and more particularly, to an apparatus and method for encoding and decoding image signals using independent luminance and chrominance image signals. Background technique [0003] Luminance and chrominance image signals are widely used for the generation, storage and transmission of image content. The luminance and chrominance image signals may include a luminance signal or a luminance image signal and a chrominance signal or a chrominance image signal. The luminance signal represents the luminance of the achromatic component. The chrominance signal represents a relative amount of a yellow-blue chroma component and a relative am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/64H04N9/77H04N7/26H04N11/04
CPCH04N9/642H04N9/67H04N19/60H04N19/186H04N19/124H04N19/132
Inventor 崔瑞永吴官锭魏浩千朴斗植李皓荣
Owner SAMSUNG ELECTRONICS CO LTD