Quick full pixel movement evaluation method of multiple kinds of modules

A technology of motion estimation and block mode, which is applied in image communication, television, electrical components, etc., can solve the problems of cost increase, whole pixel search complexity increase, and system hardware requirements are too high, and achieve easy implementation, good scalability, The effect of reducing the amount of computation

Inactive Publication Date: 2004-04-28
SHANGHAI UNIV
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AI Technical Summary

Problems solved by technology

To achieve real-time encoding, the system hardware requirements are too high, and the cost may increase exponentially
If the full search method is used, and each block mode is searched independently, the whole pixel search complexity will increase by more than 7 times

Method used

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  • Quick full pixel movement evaluation method of multiple kinds of modules
  • Quick full pixel movement evaluation method of multiple kinds of modules
  • Quick full pixel movement evaluation method of multiple kinds of modules

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Embodiment Construction

[0089] The integer pixel motion estimation search method suitable for multiple block modes proposed by the present invention is mainly applicable to video coding standards with multiple block modes, such as H.264, etc., mainly carried out as follows:

[0090] 1. Determination of the starting point and detection of skipped macroblocks

[0091] The search first determines the starting point, and starts searching with the position that may become a skipped macroblock (skipped macroblock) as the starting point. This step is related to the video coding standard. If it is determined that the macroblock can be skipped, block matching search and coding are no longer performed, and the search for the next macroblock is continued; otherwise, the second step of search is started.

[0092] 2. The diamond ring search method of the smallest block mode

[0093] This step is the key to motion estimation, and its search accuracy directly affects the search accuracy of other block patterns in...

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Abstract

This invention relates to quick integral picture elements motion estimation method for multiple kinds of block modes, firstly, searching interms of small block mode to determine larger block mode search sphere by small block mode motion vectors to search in light of the large mode till finishing the integral picture element search. This method not only secures the original rate distortion character of the coder but also reduces computations in large scale related to various block modes to increase coding speed greatly, mainly solving problems on multiblock mode motion estimation method in H264 video coder not limitted on H264 international standard, it can be used together with the present subpicture elements search method and RDO block mode decisive models.

Description

technical field [0001] The invention belongs to the field of video coding of information processing, and mainly aims at the newly proposed multi-block mode motion compensation method in the H.264 video coding international standard, and proposes a new method of utilizing the correlation of various block modes and half stop (half stop) The fast motion estimation method based on the criterion greatly improves the search speed of various block patterns under the condition of ensuring the original rate distortion of video coding, and the algorithm is simple, which is beneficial to the realization of software and hardware. Background technique [0002] At present, video coding technology has become mature, and the formulation of international standards H.261, H.263, H.264, MPEG-1, MPEG-2, MPEG-4, etc. has greatly promoted the application of multimedia technology. The H.264 video coding standard, which is about to be completed, has greatly improved its coding efficiency compared w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/176H04N19/51H04N19/513H04N19/61
Inventor 曹文锋张颖张兆杨
Owner SHANGHAI UNIV
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