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Fast motion estimation method based on motion searching scope adaptive regulation of multi-vision-point encoding

An adaptive adjustment, multi-view encoding technology, applied in TV, digital video signal modification, electrical components, etc., can solve the problem of waste

Inactive Publication Date: 2009-06-17
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The expanded search window can undoubtedly further improve the accuracy of motion estimation for complex motion sequences, but it is unnecessary waste for simple motion sequences

Method used

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  • Fast motion estimation method based on motion searching scope adaptive regulation of multi-vision-point encoding
  • Fast motion estimation method based on motion searching scope adaptive regulation of multi-vision-point encoding
  • Fast motion estimation method based on motion searching scope adaptive regulation of multi-vision-point encoding

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Embodiment Construction

[0055] One implementation of the present invention is as follows: see appended image 3 , the fast motion estimation method based on the adaptive adjustment of the multi-view coding search range is to adjust the motion search range adaptively according to the different regions where the macroblocks are located. First, the motion vectors of the corresponding macroblock and its neighboring macroblocks are extracted from neighboring coded views. Then, the motion characteristics of the macroblocks are analyzed based on the extracted motion vectors, and the macroblocks are divided into macroblocks in uniform motion regions, macroblocks in moderately consistent motion regions, and macroblocks in complex motion regions. Different motion search ranges are determined based on macroblocks in different regions. The method can greatly reduce the encoding time without reducing the encoding efficiency. The steps are (see figure 1 ):

[0056] (1) Extraction of the motion vectors of the c...

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Abstract

The invention relates to a method for estimating rapid motion based on a multi-view-point coding searching range self-adaptive adjustment, which is the self-adaptive motion estimation based on macro block motion characteristics and comprises the following steps: extracting motion information of adjacent coded viewpoints to analyze the characteristic of a multi-view video through the space relativity of the adjacent viewpoints, macro blocks are divided into three types, namely the macro blocks of areas with coherent motion, the macro blocks of areas with medium coherent motion, and the macro blocks of areas with complex coherent motion, for the areas with simple motion or medium coherent motion, the searching range can be properly reduced, for the area with complex motion, the searching range has no limit. When the searching range which is decided by the method is used for the self-adaptive motion estimation, the complexity of coding is greatly reduced without reducing the coding efficiency.

Description

technical field [0001] The invention relates to a fast motion estimation method based on the self-adaptive adjustment of the motion search range of multi-viewpoint coding. Especially different from the existing methods, before the motion estimation, the process of extracting the motion vector and analyzing the motion characteristics of the macroblock corresponding to the coded viewpoint is added, and the search range is adaptively adjusted based on the different motion characteristics of the macroblock. Background technique [0002] With the rapid development and wide application of digital video, people have higher and higher requirements for video quality and content diversity. Traditional 2D images can no longer meet the requirements. Therefore, people have turned their attention to 3D video technology. 3DTV / FTV (Three-Dimensional Television / Free Viewpoint Television) may become the next-generation video technology following High Definition Television (HDTV). The main fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N13/00H04N19/139H04N19/527H04N19/57H04N19/593H04N19/597
Inventor 沈礼权张兆扬
Owner SHANGHAI UNIV