Joint video/depth bit allocation for 3D video coding based on distortion of synthesized view

The joint coding of texture videos and depth maps plays a practical importance in three dimensional (3D) video system. Besides coding efficiency, the strategy of bit allocation between texture videos and depth maps is key issue. The paper firstly analyses the impacts on the quality of virtual views...

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Vydáno v:IEEE international Symposium on Broadband Multimedia Systems and Broadcasting s. 1 - 6
Hlavní autoři: Gaofeng Zhu, Gangyi Jiang, Mei Yu, Fucui Li, Feng Shao, Zongju Peng
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.06.2012
Témata:
3-D and multi-view video
Bit rate
Complexity theory
Encoding
Joints
Portable computers
Quantization
rate control
Streaming media
synthesized view distortion
video/depth bit allocation
ISBN:1467302937, 9781467302937
ISSN:2155-5044
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Shrnutí:The joint coding of texture videos and depth maps plays a practical importance in three dimensional (3D) video system. Besides coding efficiency, the strategy of bit allocation between texture videos and depth maps is key issue. The paper firstly analyses the impacts on the quality of virtual views from the joint coding of texture videos and depth maps. Then the paper explores the relationship and establishes a quadratic model between texture video quantization step Q t and depth map quantization step Q d . Consequently, the paper proposes a joint bit allocation scheme based on the model to get the optimal quality of the synthesized views. Experimental results show that the proposed scheme has a better rate-distortion (RD) performance for the synthesized views, compared with fixed bits ratio between texture videos and depth maps, i. e. 5:1.
ISBN:1467302937
9781467302937
ISSN:2155-5044
DOI:10.1109/BMSB.2012.6264319