Bit allocation algorithm in H.264/SVC spatial-quality with dependent R-D modeling
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作者:
Liu, Jia-Ying
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机构:
Institute of Computer Science and Technology, Peking University, Beijing 100871, ChinaInstitute of Computer Science and Technology, Peking University, Beijing 100871, China
Liu, Jia-Ying
[1
]
Guo, Zong-Ming
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机构:
Institute of Computer Science and Technology, Peking University, Beijing 100871, ChinaInstitute of Computer Science and Technology, Peking University, Beijing 100871, China
Guo, Zong-Ming
[1
]
Cho, Yong-Jin
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University of Southern California, Los Angeles, CA 90007, United StatesInstitute of Computer Science and Technology, Peking University, Beijing 100871, China
Cho, Yong-Jin
[2
]
机构:
[1] Institute of Computer Science and Technology, Peking University, Beijing 100871, China
[2] University of Southern California, Los Angeles, CA 90007, United States
A model-based spatial-quality (S-Q) layer bit allocation algorithm in H.264/SVC has been proposed. In rate and distortion (R-D) modeling, the dependent inter-layer relation has been well investigated. By taking account of the proposed R-D models, a two-step optimization algorithm is explored to solve the bit allocation problem in S-Q scalability. Finally, it can be numerically solved by Lagrangian multiplier method. It is shown by experimental results that the proposed bit allocation algorithm achieves the coding performance significantly improved from current reference software JSVM.