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Motive vector prediction method in the video code

A technology of motion vector and prediction method, which is applied in the field of video coding, can solve the problems of low efficiency of motion vector prediction and achieve high efficiency

Active Publication Date: 2007-08-15
广州市云动力科技有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to propose a method for predicting motion vectors in video coding aimed at the low efficiency of motion vector prediction in the prior art

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  • Motive vector prediction method in the video code

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Embodiment Construction

[0030] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0031] The basic idea of ​​the present invention is: firstly obtain the motion trajectory of each macroblock from the reference frame to the current frame, and use the center point of each macroblock in the current frame and the initial reference point selected from the reference frame to obtain the distance between the reference frame and the current frame. The matching block corresponding to each macroblock in the current frame is obtained, so as to obtain the motion vector of each macroblock in the current frame. A linear average algorithm and a linear approximation algorithm are used in the calculation process.

[0032] As shown in Figure 1, it is a schematic flow chart of an embodiment of a method for predicting motion vectors in video coding according to the present invention. This embodiment uses two P frames be...

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Abstract

The related prediction method for motion vector in video coding comprises: obtaining every macro-block motion vector in reference frame and thereby the motion trajectory of every macro-block from reference to current frame; with linear averaging algorithm and linear approximation algorithm, calculating in turns the match block in the reference frame, and obtaining the motion vector for every macro-block. This invention is high efficient and accurate.

Description

technical field [0001] The invention relates to the field of video coding, in particular to a method for predicting motion vectors of B frames or P frames in video coding. Background technique [0002] For digital TV, new generation mobile communication, broadband network communication and household consumer electronics, which are booming high-tech industry groups, their common technologies focus on multimedia information processing technology with video and audio as the main content, especially data compression technology. High-efficiency video coding technology is the key to realize high-quality, low-cost multimedia data storage and transmission. Currently commonly used encodings include Mpeg 2 / Mpeg 4 / H.264, etc. The encoding technologies used mainly include predictive encoding, transform encoding, vector quantization encoding, etc. These video encoding standards and related technologies have been widely used in the industry. [0003] These video coding standards all adop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32H04N7/26H04N19/176H04N19/51H04N19/573H04N19/577
Inventor 孟智平
Owner 广州市云动力科技有限公司
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