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Search method for video coding motion estimation

A motion estimation and search method technology, applied in the direction of digital video signal modification, television, electrical components, etc., can solve the problem of wasting computing resources, not considering the characteristics of video sequence content and motion complexity, and achieve the effect of improving search speed.

Inactive Publication Date: 2013-12-25
北京自动测试技术研究所有限公司
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Problems solved by technology

However, the DS search method has been using a fixed search mode in the process of processing, without considering the content characteristics and motion complexity of the video sequence, it will search some unnecessary points, resulting in a waste of computing resources

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  • Search method for video coding motion estimation
  • Search method for video coding motion estimation
  • Search method for video coding motion estimation

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Embodiment Construction

[0030] This patent application proposes a video coding motion estimation search (abbreviated as DTAS) method based on diamond and triangle adaptive. The basic idea of ​​the DTAS method is: first determine the initial search point by using the predicted motion vectors of the neighboring blocks in the spatial and temporal domains, and then select different search strategies according to the direction of the motion vector of the video sequence, and directly stop the search for the stationary and quasi-stationary blocks In the search process, the diamond pattern and the triangle pattern are adaptively selected for the content characteristics and motion complexity of the video sequence, thereby effectively improving the search speed while ensuring the search accuracy.

[0031] reference figure 2 , First determine the initial search point O by predicting the motion vector. In order to obtain an initial search point that is as close as possible to the global minimum point, it is very i...

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Abstract

The invention discloses a search method for video coding motion estimation. The search method is implemented by the following steps of: firstly, determining an initial search point by using forecast motion vectors of adjacent blocks of an air domain and a time domain; secondly, selecting different search strategies according to directions of motion vectors of a video sequence, and directly stopping searching static blocks and quasi-static blocks; and finally, adaptively selecting a diamond mod and a triangular mode during searching according to the content characteristic and the motion complexity of the video sequence so as to ensure the search precision and increase the search speed.

Description

Technical field [0001] The present invention relates to a search method for video coding motion estimation, in particular to a diamond and triangle adaptive video coding motion estimation search method for the needs of source coding, belonging to the technical field of digital image processing. Background technique [0002] Motion estimation is a set of techniques for extracting motion information from video sequences. It is the most computationally intensive part of the entire video coding solution. Generally, motion estimation accounts for about 50% to 60% of the total computational cost in a video compression operation. Therefore, the performance of motion estimation directly affects the operating efficiency of the entire video coding solution and the reconstruction quality of the entire video sequence. It is crucial to find a simple, efficient, and fast motion estimation method. [0003] Among various motion estimation methods, the block matching method has the advantages of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/32H04N19/51
Inventor 张东欧阳国胜罗永伦刘林生于明
Owner 北京自动测试技术研究所有限公司
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