发明名称 |
PROCESS AND ARRANGEMENT FOR ENCODING VIDEO PICTURES |
摘要 |
Today's video codecs require the intelligent choice between many coding options. This choice can efficiently be done using Lagrangian coder control. But Lagrangian coder control only provides results given a particular Lagrange parameter, which correspond to some unknown transmission rate. On the other hand, rate control algorithms provide coding results at a given bitrate but without the optimization performance of Langrangian coder control. The combination of rate control and Lagrangian optimization for hybrid video coding is investigated. A new approach is suggested to incorporate these two known methods into the video coder control using macroblock mode decision and quantizer adaptation. The rate-distortion performance of the proposed approach is validated and analyzed via experimental results. It is shown that for most bit-rates the combined rate control and Lagrangian optimization producing a constant number of bits per picture achieves similar rate distortion performance as the constant slope case only using Lagrangian optimization. |
申请公布号 |
KR20060133953(A) |
申请公布日期 |
2006.12.27 |
申请号 |
KR20067004318 |
申请日期 |
2006.03.02 |
申请人 |
THOMSON LICENSING |
发明人 |
HINZ TOBIAS;SCHWARZ HEIKO;WIEGAND THOMAS |
分类号 |
H04N7/24;H04N7/26;H04N7/50 |
主分类号 |
H04N7/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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