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Depth video coding method

A technology of depth video and coding method, which is applied in the field of video coding, can solve the problems that the coding efficiency needs to be improved, and the independent coding method does not use the correlation between depth and color video, so as to achieve the goal of removing redundancy, improving accuracy, and saving coding bits Effect

Active Publication Date: 2015-04-15
TIANJIN UNIV
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Problems solved by technology

However, the independent coding method does not take advantage of the correlation between depth and color video, so the coding efficiency needs to be improved

Method used

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Embodiment Construction

[0045] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0046] In order to reduce coding distortion and improve coding efficiency, an embodiment of the present invention provides a depth video coding method, see figure 1 , see the description below:

[0047] 101: Divide the macroblock of the depth video frame to be encoded into a skip macroblock, a normal macroblock, and a multi-prediction macroblock;

[0048] Among them, in order to be compatible with the H.264 / AVC standard, the macroblocks of the to-be-encoded frame of the depth video are divided into skip macroblocks, normal macroblocks and multi-prediction macroblocks in units of macroblocks according to different characteristics of the depth video.

[0049] Specifically, the skipping macroblock is: in the color video corresponding to ...

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Abstract

The invention discloses a depth video coding method. A depth video to-be-coded frame macroblock is divided into a skipped macroblock, an ordinary macroblock and a multi-prediction macroblock. A skipped module is used for coding the skipped macroblock. An optimal rate distortion optimization motion-vector sharing method is adopted to code the ordinary macroblock. A multi-prediction direction pattern, a right-direction prediction pattern, a downward-direction prediction pattern and a pattern generating smallest rate distortion cost of a prediction pattern defined by the H.246 standard are adopted to code the multi-prediction macroblock. The depth video coding method utilizes unique characteristics of the depth video and explores dependency between the depth video and corresponding color videos to effectively code the depth video, wherein the multi-prediction direction pattern can increase the accuracy of prediction and effectively remove redundancy between adjacent blocks. The optimal rate distortion optimization motion-vector sharing method can utilize the movement dependency between the depth video and the corresponding color videos to save coding bits.

Description

technical field [0001] The present invention relates to the field of video coding, in particular to a deep video coding method. Background technique [0002] With the improvement of people's audio-visual requirements and the desire for media closer to reality, three-dimensional (3D) technology has achieved rapid development. Three-dimensional TV and free-viewpoint TV have been widely studied by industry and academia and gradually entered the market. The MPEG working group has extended the H.264 / AVC video coding standard in the direction of multi-view, and set multi-view video coding (MVC) as the coding standard of multi-view video. MVC can support the simultaneous transmission of multiple viewpoints, and can effectively compress multi-viewpoint videos by using the redundancy between viewpoints, but the number of viewpoints transmitted is limited, and it cannot realize free-viewpoint TV, so the video format including depth video came into being. pregnancy. The depth video ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/597H04N19/61H04N19/159H04N19/176
Inventor 雷建军李帅侯春萍冯坤吴媺民王来花
Owner TIANJIN UNIV
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