A Fast Motion Estimation Method

A fast-moving, motion-vector technology, applied in television, electrical components, digital video signal modification, etc., can solve problems such as wasting time, reducing image signal-to-noise ratio, and greatly affecting, so as to achieve wide application, improve search efficiency, and improve speed effect
CN101309424BInactive Publication Date: 2011-11-30SICHUAN PANOVASIC TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN PANOVASIC TECH
Publication Date
2011-11-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to video compression technology, in particular to a fast motion estimation method in the video compression technology. The invention proposes a motion estimation method that reduces the possibility of falling into a local optimum and basically does not affect the signal-to-noise ratio of an image. The gist of its technical scheme is: a kind of method for quick motion estimation, comprises the following steps: a. counts the probability size that the motion vector of the block in the image is equal to the predicted motion vector; b. when detecting the motion vector, according to the above steps a Detect the predicted motion vector in sequence from the probability obtained in the statistics from large to small; c. Use a threshold to judge the termination of the motion search. The invention reduces unnecessary searches, improves search efficiency, and is suitable for high-definition video coding and real-time coding.
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Description

technical field

[0001] The invention relates to video compression technology, in particular to a fast motion estimation method in the video compression technology. Background technique

[0002] Motion estimation is one of the most important components in video coding system, and it has an important impact on the quality of coded image sequences. The motion estimation compensation technology can effectively remove the inter-frame redundancy in the image sequence so as to realize effective coding. The motion estimation and compensation technology based on block matching is adopted by many video coding standards, such as MPEG-1 / 2 / 4 and ITU-TH.261 / 263 / 263+ / 264, etc., because of its simple algorithm and easy implementation of software and hardware. The basic idea is to divide the coded image into macroblocks of the same size, and macroblocks can also be divided into smaller blocks. For each block, search for the closest matching block in its reference frame according to a certai...

Claims

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