发明名称 |
Bit rate control method and apparatus for MPEG-4 video coding |
摘要 |
A bit rate control method and apparatus for MPEG-4 video coding are provided. The method includes performing initialization in which a video frame is inputted and a memory is allocated to a rate distortion (RD) buffer where an encoded bitstream to be transmitted to a decoder is stored; intra-coding the inputted video frame; updating the RD buffer; performing post-frame skip in which whether or not the next frame should be encoded is determined to avoid underflow or overflow of the RD buffer; receiving the next video frame, and estimating a quantization parameter (QP) or inter-coding the next video frame depending on whether or not the inputted frame is a first video object plane (VOP); performing a back propagation (BP) model update based on the number of the inputted frames after inter-coding the next frame, or performing the post-frame skip again after performing the self-organizing control; and receiving the next video frame, and estimating QPs of all the frames or performing the self-organizing control in all the frames.
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申请公布号 |
US7480332(B2) |
申请公布日期 |
2009.01.20 |
申请号 |
US20030667970 |
申请日期 |
2003.09.23 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHANG SEUNG-GI;ZHANG ZHIMING |
分类号 |
H04N7/12;H04N7/32;G06K9/36;G06T9/00;H04N7/26 |
主分类号 |
H04N7/12 |
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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