Coding method of asymmetric stereoscopic video

A stereoscopic video coding and video coding technology, applied in the field of video coding, can solve the problems of different rate-distortion performance and differences, and achieve the effect of good rate-distortion performance and convenient acquisition

Inactive Publication Date: 2010-06-09
上海贵知知识产权服务有限公司
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Problems solved by technology

However, since the horizontal signal correlation and vertical signal correlation strength of stereo video images may be different, and the correlation strength is related to the image content, resulting in asymmetric stereo video coding using 1 / 2 resolution downsampling , using horizontal and vertical downsampling produces different rate-distortion performance

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  • Coding method of asymmetric stereoscopic video
  • Coding method of asymmetric stereoscopic video
  • Coding method of asymmetric stereoscopic video

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] A stereoscopic video is composed of a left-viewpoint video and a right-viewpoint video. Stereoscopic video is usually coded in a group of picture (GOP, Group Of Picture) unit, and each picture group includes two left-viewpoint and left-viewpoint videos in the same time period. When the existing asymmetric stereoscopic video coding method encodes the left-viewpoint video and the right-viewpoint video, it does not consider the difference between the signal correlation strength in the horizontal direction and the vertical direction of the image, and adopts a down-sampling method in a fixed direction, so it cannot obtain better Good rate-distortion performance. To this problem, the present invention proposes a kind of asymmetrical stereoscopic video coding method, and the specific process of this coding method is as follows:

[0023] Stere...

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Abstract

The invention discloses a coding method of asymmetric stereoscopic videos, comprising the following steps of: in the coding process of each half resolution ratio down-sampling image of a right view point video by a video coding method with time domain prediction and view point space prediction, using a decoding reconstructed frame of the coded half resolution ratio down-sampling image of the right view point video as a time domain prediction reference frame, and using a half resolution ratio down-sampling image of a synchronous decoding reconstructed frame of a left view point video as a view point space prediction reference frame; and selecting a sampling direction according to the sizes of residual errors of macro blocks which can not only be horizontally predicted, but also be vertically predicted in an I frame image of the left view point video in the half resolution ratio down-sampling process, wherein the residual errors of the macro blocks are predicted by adopting a horizontal prediction mode and a vertical prediction mode, thus better rate-distortion performance can be obtained. Besides, because residual error information can be conveniently obtained during coding without additional calculation, the complexity of the coding can not be enhanced.

Description

technical field [0001] The present invention relates to a video encoding method, in particular to an asymmetric stereoscopic video encoding method. Background technique [0002] With the continuous improvement of stereoscopic display technology, 3DTV (Three Dimensional Television, stereoscopic television / three-dimensional television) is more and more popular, its products are also increasingly abundant, and its application fields are also constantly expanding. Mobile terminals such as mobile phones are indispensable communication tools for people at present, and are also one of the important carriers of multimedia technology. The market prospect of transplanting 3DTV technology to the field of mobile terminals is broad. In Europe, the mobile-3DTV project has been implemented. Its purpose is to establish a complete stereoscopic video system based on mobile terminals, including stereoscopic video acquisition, effective encoding, and DVB-H (Digital Video Broadcasting-Handheld, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/50H04N13/00H04N19/59H04N19/597H04N19/61
Inventor 蒋刚毅杨海龙郁梅
Owner 上海贵知知识产权服务有限公司
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