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Control method of high performance three-dimensional code rate in flexible video coding

A three-dimensional code rate and video coding technology, applied in the information field, can solve the problem of not considering the embedded organization of inter-frame coding code streams, etc., and achieve high scalability and high video codec effects

Inactive Publication Date: 2006-06-28
XI AN JIAOTONG UNIV
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Problems solved by technology

However, most of the current code stream organization methods only support the embedded code stream of intra-frame coding, and do not consider the embedded organization of code stream between frame codes, so when intercepting the entire video code stream, only intra-frame coding can be guaranteed Locally optimal allocation of bit rate, but cannot guarantee global optimal bit rate allocation for the entire video stream

Method used

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  • Control method of high performance three-dimensional code rate in flexible video coding
  • Control method of high performance three-dimensional code rate in flexible video coding
  • Control method of high performance three-dimensional code rate in flexible video coding

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Embodiment Construction

[0025] According to the technical solution of the present invention, the present invention generates an embedded video code stream through the "three-dimensional code rate control" technology, which is scalable in terms of time, space and quality. Therefore, the coded stream can be intercepted according to the diversity of the user's video receiving terminal and the network bandwidth, while ensuring the optimal decoding quality of the intercepted code stream.

[0026] The "3D rate control" technology is, firstly, decomposing a GOP (group of frames, including N frames of images) into 4 time resolution levels on the time axis through motion estimation and 3-level time-domain wavelet transform. Since the time domain distance between the object frames of the more advanced (level 4 and above) time domain wavelet transform increases, the correlation decreases significantly, and the effect is not good, so it is not used. The decomposed results include N / 8 frames at the LLL time resol...

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Abstract

This invention discloses a high performance 3-D code rate control method in scalable video coding, which takes the 3-D rate control technology as the core to provide an embedded video code stream of high performance time domain, space domain and quality scalability adapting the heterogeneousness of the video transmission network, waveness of the network bandwidth and user receiving ends to be scalable on time, space and quality and is intercepted based on the variety and network bandwidth of user video receiving ends.

Description

technical field [0001] The invention belongs to the field of information technology, and in particular relates to a high-performance three-dimensional (time resolution, space resolution, quality) code rate control method in a scalable video codec architecture. Background technique [0002] Compared with the traditional block DCT technology and the digital video codec system (H.26x and MPEG series) of the motion compensation DPCM closed-loop architecture, the video coding system structure based on the three-dimensional wavelet kernel is adaptive in the space domain, time domain and quality scalability. offers the possibility. In order to better adapt to the heterogeneity of the video transmission network (Heterogeneous), the fluctuation of network bandwidth and the diversity of user video receiving terminals, it is necessary to organize the coded video stream in an embedded way, and The video transmission network structure, network bandwidth, and user'...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/146H04N19/61
Inventor 薛建儒张静郑南宁
Owner XI AN JIAOTONG UNIV
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