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Allocation method for optimal code rates of texture video and depth map based on models

An allocation method and optimal code rate technology, applied in the field of communication standards, can solve the problems of no practical application value and high complexity

Inactive Publication Date: 2010-09-15
XIDIAN UNIV
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Problems solved by technology

Although the search-based bit rate allocation method can perform optimal bit rate allocation for texture video and depth maps, its complexity is too high and has no practical application value

Method used

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  • Allocation method for optimal code rates of texture video and depth map based on models
  • Allocation method for optimal code rates of texture video and depth map based on models
  • Allocation method for optimal code rates of texture video and depth map based on models

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Embodiment Construction

[0063] refer to figure 1 , the specific implementation of the present invention comprises the following steps:

[0064] Step 1, define M V and texture video quantization step size Q T , Depth map quantization step size Q D The relationship between.

[0065] Theoretical analysis and experimental verification can obtain the distortion model of the virtual view, as shown in equation (15),

[0066] m V =a T ×Q T +a D ×Q D +C (15)

[0067] (15) where a T means Q T to M V influence parameter; a D means Q D to M V influence parameter; C represents the inherent distortion of the virtual view synthesis process; the virtual view distortion model shown in (15) can be obtained by figure 2 verify. figure 2 (a) shows the relationship between the distortion of the virtual view synthesized by the texture video and depth map of the encoded AKKO&KAYO 3D video sequence, the texture video quantization step of the sequence, and the depth map quantization step of the sequence, ...

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Abstract

The invention discloses an allocation method for optimal code rates of a texture video and a depth map based on models, mainly solving the problem of code rate allocation of the texture video and the depth map in three-dimensional video encoding. The proposal is as follows: determining the relationship between virtual view distortion and the quantization step of texture video and the quantization step of the depth map; calculating the optimal quantization step of the texture video and the optimal quantization step of the depth map by using the relationship between the encoding rates of the texture video and the quantization step of the texture video and the relationship between the encoding rates of the depth map and the quantization step of the depth map; and encoding the texture video and the depth map with the optimal quantization step of the texture video and the optimal quantization step of the depth map to achieve allocation for the optimal coding rate of the texture video and the depth map. The method has the advantages that complexity is low and the optimal code rates of the texture video and the depth map can be reached. The method can be used for allocation of the code rates of the texture video and the depth map in three-dimensional video coding.

Description

technical field [0001] The invention belongs to the field of communication standards. It involves joint coding technology of texture video and depth map in 3D stereoscopic video. Specifically, under the condition of a fixed bit rate, the bit rate allocation is performed on the texture video and the depth map, so that the quality of the synthesized virtual view can reach the optimal bit rate allocation. Background technique [0002] As the main video application technology in the future, 3D video means that users can enjoy real 3D video content through 3D video display devices. Technologies related to 3D video, such as 3D video acquisition, 3D video encoding, and 3D video display, have received extensive attention. In order to promote the standardization of 3D video technology, in 2002, the Motion Picture Experts Group (Motion Picture Experts Group, MPEG) proposed the concept of Free View Television (FTV). It can provide vivid and real, interactive three-dimensional audio-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/00H04N7/26H04N19/597
Inventor 元辉常义林杨付正霍俊彦
Owner XIDIAN UNIV
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