Macro block mode fast selecting method based on just noticeable distortion

A fast selection and macroblock technology, applied in the field of image processing, can solve the problems of reducing the complexity of multi-viewpoint video coding, cannot directly apply multi-viewpoint video coding, and cannot fully utilize the efficiency of human eye coding, so as to save coding time, The effect of reducing coding complexity

Inactive Publication Date: 2013-04-03
NINGBO UNIV
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Problems solved by technology

[0003] At present, many researchers at home and abroad are working on fast macroblock mode selection methods, but traditional macroblock mode fast selection methods generally cannot be directly applied to the HBP coding prediction structure of multi-view video coding, or can only reduce certain coding complexity of some views
In addition, because the human eye is the ultimate recipient of the video, the traditional fast macroblock mode selection method does not fully consider the characteristics of the human visual system (Human visual system, HVS), so it cannot make full use of the perception of the human eye. Redundancy improves coding efficiency

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  • Macro block mode fast selecting method based on just noticeable distortion
  • Macro block mode fast selecting method based on just noticeable distortion
  • Macro block mode fast selecting method based on just noticeable distortion

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Embodiment Construction

[0091] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0092] Multi-view video coding adopts the HBP coding prediction structure of inter-viewpoint and temporal joint prediction, which makes full use of the correlation within and between viewpoints to achieve good compression performance; on the other hand, a large number of B frames are used to improve coding important reason for performance. figure 1 An MVC-HBP structure diagram with 8 viewpoints and a group of pictures (GOP) length of 8 is given, and the number of frames of images contained in each GOP is the number of viewpoints N view with GOP length L GOP The product of , for the percentage of the number of B frames in different GOP structures is It can be seen that when N view and L GOP When both are 8, there are 59 B frames, accounting for 92.19% of the total number of frames in the image in the entire GOP; and when the length of the ...

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Abstract

The invention discloses a macro block mode fast selecting method based on just noticeable distortion. A just noticeable distortion image of a time-space domain corresponding to each color image in color television video sequences to be processed is obtained, a just noticeable distortion value of each image block in the just noticeable distortion image of the time-space domain is calculated, and then an optimal macro block encoding mode of each macro block in a B-frame color time-space domain is confirmed according to the just noticeable distortion value of each image block in the just noticeable distortion image of the time-space domain. The macro block mode fast selecting method can effectively save encoding time of color videos on the premise that color video visual perception quality is guaranteed and greatly reduces the encoding complexity level of the color videos, and saved encoding time can reach to 72.7% averagely.

Description

technical field [0001] The invention relates to an image processing technology, in particular to a fast selection method of a macroblock mode based on just perceivable distortion. Background technique [0002] With the rapid development of multimedia technologies such as 3D television (3DTV) and free-viewpoint television (FTV), the demand for scene description of stereoscopic video using multiple viewpoints is increasing. Three-dimensional stereoscopic video can provide more realistic feelings and novel visual enjoyment, but it requires multiple cameras to capture, encode, transmit, decode, transmit, and display from different positions or angles at the same time to present the real 3D world content. However, since the amount of data is directly proportional to the number of video sequence viewpoints, 3D stereoscopic video requires huge storage space, wide transmission band and high computing power. Multi-view video signals in multi-view video coding have strong correlation...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N19/103H04N19/147H04N19/186
Inventor 郁梅刘星宇蒋刚毅彭宗举邵枫
Owner NINGBO UNIV
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