分级视频码流的三维精细粒度排序方法

doi:10.3969/j.issn.1001-2400.2012.02.013

Abstract

Abstract:

In order to reduce the effects of the network delay, bandwidth fluctuation and the packet loss and improve the quality of the reconstructed video, an improved 3D fine granularity priority ordering method for the scalable video bit stream is proposed. The method arranges the SVC coding layers according to their rate-distortion (RD) characteristics from spatial, temporal and SNR aspects within a group of picture (GOP), so that the optimal reconstructed video quality can be obtained when a certain number of packets are correctly received at the decoder. By layer refinement and improved iteration, the method overcomes the imprecision of the distortion calculation in the previous method when the variation of the layer bit stream is large, and provides finer granularity ordering characteristics for the layered bit stream. Simulation results show that the proposed method can effectively improve the reconstructed quality of SVC bit streams compared with existing methods.

Key words: video transmission, scalable video coding, rate distortion, order

CLC Number:

TN919.8

XIAO Song;LIU Ting;DU Jianchao;LU Ji. Improved 3D fine granularity priority ordering method for the scalable video bit stream[J].J4, 2012, 39(2): 73-79.

References

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Improved 3D fine granularity priority ordering method for the scalable video bit stream

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