Macro-block partition mode selection method in movement search

A technology of motion search and macroblock division, which is applied in the field of video coding, can solve problems affecting the speed of video coding, reduce the number of motion searches and improve the speed of the algorithm
CN101404774AInactive Publication Date: 2009-04-08SICHUAN PANOVASIC TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SICHUAN PANOVASIC TECH
Publication Date
2009-04-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to video encoding technology, in particular to an interframe fractional order movement searching method of H.264. The invention solves the technical problem that a selection method of a macro partition mode can rapidly partition a macro block in the movement searching. The selection method of the macro partition mode in the movement searching uses a threshold valve to judge SAD value of a partitioned block, thus judging matching degree of a block in the current mode; if the partitioned block has higher matching degree in the current mode, other modal partitions are not carried out on the partitioned block so as to reduce quantity of selection of the macro block partition mode; if the partitioned block has lower matching degree in the current mode, other modal partitions are carried out on the partitioned blocked so as to guarantee interframe precision of prediction. The invention can effectively reduce quantity of selection of the macro block partition selection mode and movement searching times of the block, thus improving arithmetic speed of an encoder.
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Description

technical field

[0001] The invention belongs to video coding technology, and in particular relates to an H.264 inter-frame fractional motion search method. Background technique

[0002] H.264 / AVC is formulated by the Joint Video Team (JVT). This standard provides technical support for video technologies in broadcasting, storage devices, conversational services, and wireless networks. Compared with previous standards, such as: H.263, H.263+, H.263++ and MPEG -4. The video coding efficiency has been greatly improved. Under the same video quality, H.264 not only saves 50% bit rate than H.263 and MPEG-4, but also has better support for network transmission Function. H.264 / AVC adopts many new technologies, including multi-mode intra prediction, FMO (Flexible Module Order), 1 / 4 pixel precision motion estimation and motion compensation, multiple reference frame technology, loop filter technology, etc. These new technologies not only enable H.264 to have better video compression ...

Claims

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