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Method and system of conducting coding and decoding error correction based on color space transformation

A technology of color space conversion and error correction, applied in the field of video codec, can solve the problem of low coding efficiency and achieve the effect of improving coding efficiency and quality

Active Publication Date: 2013-05-08
SHANGHAI GMT DIGITAL TECH
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method and system for correcting codec errors based on color space transformation to solve the problem that the encoding efficiency of existing lossy compression methods is not high

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  • Method and system of conducting coding and decoding error correction based on color space transformation

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Embodiment Construction

[0031] The method and system for correcting codec errors based on color space transformation proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0032] Please refer to figure 1 , which is a schematic flowchart of a method for correcting codec errors based on color space transformation according to an embodiment of the present invention. Such as figure 1 As shown, the method for correcting codec errors based on color space transformation includes:

[0033] S11: Perform color space transformation on the Y, U, and V three components of each pixel of the decode...

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Abstract

The invention provides a method of conducting coding and decoding error correction based on color space transformation. The method comprises conducting color space conversion on components of Y, U and V of each pixel of a decoding video frame of color-digitalized video which is represented through color space of luma and chroma (YUV) type so as to obtain three components R, G and B corresponding to three components Y, U and V; respectively correcting the three components R, G and B between preset minimum value and maximum value so as to obtain three components R', G' and B' which correspond to the three components R, G and B; conducting color space inverted transformation on the three components R', G' and B' so as to obtain three components Y', U' and V' which correspond to the three components R', G' and B' and are used as components of each corrected pixel of the decoding video frame. The three components Y, U and V of each corrected pixel of the decoding video frame go through coding and decoding error correction so as to enable the decoding video frame to be closer to an original video frame, and therefore coding efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of video coding and decoding in signal processing, in particular to a method and system for correcting coding and decoding errors based on color space transformation. Background technique [0002] Colored digital video is usually expressed in a YUV-type color space, usually using 8 binary bits to represent the value of each component of a pixel. However, when video is captured and played back, it usually needs to be transformed into an RGB color space. [0003] In the field of video codec technology in signal processing, there are many digital video codec standards, among which, the representative ones are the international standard MPEG-4, H.264 / MPEG-4AVC (a kind established by ITU-T and ISO / IEC MPEG jointly formulated video compression coding international standard), my country's self-developed standard AVS, etc., these standards all involve the technology of correcting the error generated by the lossy co...

Claims

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Application Information

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IPC IPC(8): H04N7/64H04N7/26H04N9/64H04N19/89H04N19/186
Inventor 李亚柯范涛赵海武李国平腾国伟罗平伟
Owner SHANGHAI GMT DIGITAL TECH
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