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Quick motion estimation method and video coding and decoding method

A technology of fast motion and amount of motion, applied in the field of video coding and decoding, can solve the problem of time-consuming operation, and achieve the effect of improving speed and efficiency

Inactive Publication Date: 2008-09-17
HISENSE
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Problems solved by technology

[0006] The present invention aims at the time-consuming problem of the motion estimation method in the prior art, and provides a fast motion estimation method in combination with the characteristics of the video sequence itself. On the premise of not increasing the search complexity, the matching block can be found quickly, which improves the speed and efficiency of video coding

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  • Quick motion estimation method and video coding and decoding method

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Embodiment Construction

[0032] Firstly, the basic principle of the video encoding and decoding method of the present invention is introduced: the video information processing technology includes the process of compressing and encoding the video signal at the encoding end and the process of decoding the compressed signal at the decoding end. Commonly used video codec standards such as AVS and MPEG all adopt a hybrid video coding strategy, which usually includes four main modules such as prediction, transformation, quantization and information entropy coding. The main function of the prediction module is to use the encoded and reconstructed image block (i.e. the reference block) to predict the current image block (i.e. the current block) to be encoded, or use the encoded and reconstructed image block in the image to transform to another space , so that the energy of the input signal is concentrated on the low-frequency transform coefficients as much as possible, thereby reducing the temporal correlation...

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Abstract

The invention discloses a fast motion estimation method and a video coding method, which solves the problem that motion estimation consumes too much time in the prior art. The fast motion estimation method and the video coding method integrate the characteristic of video sequences, set searching templates having different searching diameters, select a different searching template for searching according to the position of the minimum value of the absolute error sum of a current block and the reference block thereof, and can find the optimal matching block quickly without increasing searching complexity, thus to greatly improve the speed and efficiency of video coding.

Description

technical field [0001] The present invention relates to digital video encoding and decoding technology, in particular to a fast motion estimation method in video encoding technology and a video encoding and decoding method using the motion estimation method. Background technique [0002] Video compression methods include intra-frame compression and inter-frame compression, among which inter-frame compression can significantly improve the compression ratio and is the main source of the compression ratio. Therefore, the existing video compression standards, such as digital audio and video codec standard AVS, Motion Picture Experts Group MPEG and other video codec standards, mostly use inter-frame compression methods based on motion estimation. The principle is to first divide the current frame into several blocks of the same size, and then search for the most similar matching block within a certain size range of the reference frame for each block, which is called the best matc...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N19/56
Inventor 刘微刘志胜彭玉华
Owner HISENSE
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