Motion predicting or compensating method

A technology of motion prediction and motion vector, which is applied in the field of communication, can solve the problems of insufficient accuracy and high search complexity, and achieve the effect of maintaining complexity, improving coding performance, and reasonable complexity
CN102710934BActive Publication Date: 2015-05-06HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2015-05-06

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Abstract

Embodiments of the present invention provide a motion prediction or compensation method during a video coding and decoding process. A motion prediction or compensation method provided in the embodiments of the present invention includes: acquiring a candidate motion vector set; conducting a refined search for an optimal motion vector based on information of the candidate motion vector set; and performing motion prediction or compensation by using the motion vector acquired by the refined search. This improves coding performance and meanwhile maintains reasonable complexity.
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Description

technical field

[0001] The invention relates to the field of communication technology, in particular to a motion prediction or compensation method in video coding and decoding. Background technique

[0002] Motion prediction and motion compensation are important technologies in video compression. Part of the bits in the video compression code stream are used to transmit motion vector information, especially in the case of low bit rates. The bits usually exceed 50% of the total bits of the code stream. Therefore, it is necessary to improve coding efficiency by selecting an optimal motion vector. For the video coding of continuous dynamic images, several consecutive images are divided into three types: P, B, and I. For P frames, the prediction is made according to the correlation between this frame and the adjacent previous frame (I frame or P frame) To compress the data of this frame; for the B frame, it is to predict and compress the current frame according to the correlat...

Claims

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