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Time-domain filtering method for video code

A time-domain filtering and video coding technology, which is applied in the field of computer image information processing, can solve problems such as high complexity and weak adaptability, and achieve strong correlation, strong robustness, and the effect of overcoming high complexity

Active Publication Date: 2009-11-18
南京坤前计算机科技有限公司
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  • Summary
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a time-domain filtering method for reducing the coding sequence noise in the coding system, so that the static macroblocks in the coding sequence have better correlation between different images in the sequence, and overcome the The shortcomings of high complexity and weak adaptability in the existing technology have strong robustness while meeting real-time requirements

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Embodiment Construction

[0024] The method of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] The time-domain filtering method of the present invention is performed in units of macroblocks. As a part of the video coding system, the filtering operation of the current macroblock in the current frame is performed after the motion search of the previous macroblock and before the motion search of the current macroblock. Inside the same macroblock, the luma component and the chrominance component data are operated separately, and the processing of the two can be performed in parallel. The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] (1) Specific implementation of the brightness component

[0027] The processing of the luminance component by the time domain filtering method of the present invention can be specifically divided into detection and process...

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Abstract

This invention discloses one visual coding time zone filter method, which separately process the brightness variable and color data and comprises the following steps: firstly computing current frame macro block and isolate difference sum of brightness values to denote certain property on the macro block; according to the macro property mark adopting relative strategies; For those blocks near the macro block, according to the statistics information of isolate difference from each picture point to front frame point to judge its operation property adopting relative filter method; for those static macro block adopting relative strategies.

Description

technical field [0001] The invention belongs to the field of computer image information processing, in particular to a time-domain filtering method for reducing noise in video coding. Background technique [0002] Computer image information processing technology develops rapidly with the needs of various fields of society. The processing of video coding noise is one of the important issues. When the static scene captured by the camera is transmitted to the TV screen, it is often found that the graphics sequence has pitting noise, especially for the scene with rich texture. Due to the influence of pitting noise, the pixel values ​​at the same position in the still scene are irrelevant at different times. When these sequences are directly encoded using the MPEG of the International Organization for Standardization (ISO) and the H.263 image coding standards recommended by the International Telecommunications Union (ITU), since the correlation of images at adjacent moments in ...

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Application Information

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IPC IPC(8): H04N9/804H04N11/04H04N7/32H04N19/503H04N19/513H04N19/615
Inventor 黄晓红王宁
Owner 南京坤前计算机科技有限公司