Code rate control method for multi-view texture video and depth map coding

A technology of depth map coding and bit rate control, which is applied in the field of bit rate control of multi-view texture video and depth map coding, and can solve the problems of bit rate control error expansion, inaccurate bit rate control, and no consideration of texture video distortion, etc.

Active Publication Date: 2014-11-19
SHANGHAI UNIV
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Problems solved by technology

However, the disadvantage of this bit rate-distortion relationship is that since the coded texture video will be presented to the audience through the display, the above model only considers the distortion of the virtual drawing viewpoint, and does not consider the distortion of the encoded texture video. Moreover, By solving the limited equations between the encoding quantization step and the bit rate, the encoding quantization step is directly used for encoding, resulting in ver

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  • Code rate control method for multi-view texture video and depth map coding
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  • Code rate control method for multi-view texture video and depth map coding

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[0090] The technical solutions of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0091] Adopt the reference software 3DV-ATM that International Moving Picture Experts Group (Moving Picture Experts Group, MPEG) organizes to provide in the example of the present invention, PIP three-view point structure, encoder GOP is layered B frame structure, and the number of B frames in a GOP is 7. The number of I frames or P frames is 1; the video encoding frame rate ,Such as figure 1 As shown, a group of rate-controlled picture groups (RCGOP) with a length of 8 coded video sequences encoded with different initialized quantization parameters Qp, in the figure, the arrow indicates the spatial prediction direction of encoding, and the numbers in the horizontal direction, 0-8 are according to The video shows the numbers of 9 frames arranged in sequence, and the vertical direction is the viewpoint direction, where T1, T5, T9 r...

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Abstract

The invention discloses a code rate control method for multi-view texture video and depth map coding. The method comprises the following steps: giving the target bit rate R[target], and performing code rate allocation between coding view points, code rate allocation between a texture video and a depth map, code rate allocation of the code rate control image group (RCGOP) level, code rate allocation of the texture video and depth map (TD) unit level and code rate allocation of the frame level by a coding end based on multi-view texture video and depth map coding. According to the method, a common processing framework is provided for code rate control of multi-view texture video and depth map coding, the code rate control precision can be improved, the calculation complexity can be lowered, and the coding efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of multimedia communication, and in particular relates to an efficient code rate control method for multi-viewpoint texture video and depth map coding. Background technique [0002] In video transmission, the existing network bandwidth is limited and unstable, and with the popularity of high-definition video and three-dimensional (3D) video, the amount of video data is increasing, and network bandwidth resources are seriously insufficient. Only relying on high compression ratio to encode and transmit video will seriously reduce the video display quality. The bit rate control method of video coding can make full use of limited network resources, adjust the output bit rate of video encoder in real time, obtain the best balance between video quality and bandwidth utilization, and improve channel utilization. [0003] There are many representation methods for 3D video. Multi-viewpoint texture video and depth ma...

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Application Information

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IPC IPC(8): H04N13/00H04N19/177H04N19/124
Inventor 沈礼权曹志明胡乾乾赵振军张兆扬
Owner SHANGHAI UNIV
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