Loop filtering method in image coding processing

A technology of loop filtering and image coding, which is applied in the field of image coding processing, and can solve problems such as single filter operator, difficulty in achieving filtering effect, and high-intensity smoothing filtering in uneven areas.
CN1867075AActive Publication Date: 2006-11-22HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2006-11-22

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Abstract

The invention relates to a loop filter method used in image code process. Wherein, it comprises: first, calculating the number of similar points in the margin of filtered code block, and according to said number and if there is frame internal block, to decide the block effective value of said code block; then according o the pixel difference between two sides of block margin, judging if the block margin is the real edge of picture; at last, processing filter treatment on the code block according to the block effective value, when it is false edge. The invention improves the flat area filtration, to obtain better effect on the block removal effect of flat area.
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Description

technical field

[0001] The present invention relates to the technical field of image coding processing, in particular to a loop filtering method in image coding processing. Background technique

[0002] With the development of multimedia technology and the rapid promotion of multimedia applications, the H.264 video image compression standard formulated by JVT, a standard formulation working group jointly formed by MPEG and ITU, is characterized by its advanced technical characteristics and better compression It has been widely used in conference TV, videophone, streaming media, HD DVD, video surveillance, digital TV, 3G and other fields.

[0003] H.264 compression processing framework such as figure 1 As shown, the basic processing unit is 16×16 macroblock, which adopts multi-frame reference, intra-frame prediction, multi-macroblock mode, 4×4 integer transformation and quantization, loop filtering, 1 / 4 pixel motion prediction, CAVLC ( Context-based variable length coding a...

Claims

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