| 基于编码复杂度的帧层和宏块层自适应码流控制方法 |
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| 引用本文： | 刘峰,缪陆军,徐浩. 基于编码复杂度的帧层和宏块层自适应码流控制方法[J]. 南京邮电大学学报(自然科学版), 2006, 26(6): 21-26 |
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| 作者姓名： | 刘峰 缪陆军 徐浩 |
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| 作者单位： | 南京邮电大学,图像处理与图像通信江苏省重点实验室,江苏,南京,210003 |
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| 基金项目： | 国家自然科学基金;江苏省自然科学基金 |
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| 摘 要： | 码流控制在实时视频编码通信中起到非常重要的作用。分析了H.264率失真优化和码流控制之间存在“蛋鸡悖论”问题并给出JVT-G012中的码流控制方案,提出了基于编码图像复杂度的帧层和宏块层自适应码流控制方法。模拟仿真表明:与JVT-G012方法相比,以稍微降低缓冲区平稳性的代价,换取编码图像的平均PSNR值提高和主观质量的改善,以及码流控制算法复杂度的降低,具有一定的实际应用价值。
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| 关 键 词： | 码流控制 视频编码 |
| 文章编号： | 1673-5439（2006）06-0021-06 |
| 收稿时间： | 2006-05-09 |
| 修稿时间： | 2006-05-09 |
Adaptive Frame Layer and Macro-Block Layer Rate Control Method Based on Encoding Complexity |
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| LIU Feng,MIAO Lu-jun,XU Hao. Adaptive Frame Layer and Macro-Block Layer Rate Control Method Based on Encoding Complexity[J]. JJournal of Nanjing University of Posts and Telecommunications, 2006, 26(6): 21-26 |
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| Authors: | LIU Feng MIAO Lu-jun XU Hao |
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| Affiliation: | Image Processing and Image Communications Key Lab, Nanjing University of Posts and Telecommunications, Nanjing 21003, China |
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| Abstract: | Rate control plays very important role in real-time communications.The chicken and egg dilemma between rate distortion optimization and rate control in H.264 is analyzed,and the JVT-G012 rate control scheme is given.Adaptive frame layer and macro-block layer rate control method based on encoding complexity is proposed.Simulation results show that compared with JVT-G012,the proposed method improves image average PSNR and visual quality,decreases the rate control algorithm complexity at the cost of decreases slightly buffer steady. |
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| Keywords: | H.264 |
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