期刊文献+

一种改进的宏块层码率控制策略

Improvements on MB-layer Rate Control Scheme for Video Coding
下载PDF
导出
摘要 利用DCT域中交流系数的均方和代替像素域的方差,作为宏块运动复杂度的表征,并将改进后的码率模型运用于H.264的码率控制策略。仿真结果表明,与现有的码率控制算法相比,改进方案可以在不同的目标码率下更有效地控制码率的波动,改善了PSNR增益。在图像质量方面更平稳,有效地改善了主观视觉质量。 The fact that the mean square of AC coefficients in DCT is equal to the variance of pixels is employed to represent the motion complexity of MB (macroblock). Based on this, the new rate distortion model is integrated into the existing rate control scheme of H. 264. The simulation results show that the proposed scheme can more effectively control the rate variant, and improve PSNR gain as well.
出处 《火力与指挥控制》 CSCD 北大核心 2009年第9期154-157,共4页 Fire Control & Command Control
基金 广东工业大学博士启动基金资助项目(063018)
关键词 H.264 码率控制 DCT域 均方和 H. 264, rate control, DCT domain,mean square
  • 相关文献

参考文献8

  • 1Pan F, Li Z, Lim K,et al. A Study of MPEG-4 Rate Control Scheme and Its Improvements [J]. IEEE Transactions on Circuit and Systems for Video Technology, 2003, 1 3 (5) : 440-446.
  • 2李子印,朱善安.基于率失真理论的低复杂度码率控制算法[J].浙江大学学报(工学版),2006,40(6):1007-1010. 被引量:3
  • 3ISO/IEC 14496-10: 2003. Coding of Audiovisual Objects-Part 10: Advanced Video Coding. also ITU-T Recommendation H. 264 Advanced Video Coding for Generic Audiovisual Services[S],2003.
  • 4Yuan W, Lin S X, Zhang Y D,et al. Optimum Bit Allocation and Rate Control for H. 264/AVC[C]// Joint Video Team of ISO/IEC and ITU 15th Meeting, JVT-O016,2005.
  • 5Yu H T, Pan F, Lin Z P. Content Adaptive Rate Control for H. 264[C]//ICIC International,2005.
  • 6Jiang M ,Ling N. On Enhancing H. 264/AVC Video Coding Rate Control by PSNR-Based Frame Complexity Estimation [J]. IEEE Transaction on Consumer Electronics, 2005,5 (1): 84-88.
  • 7赵波,吴成柯.一种新的低时延视频编码码速率控制算法[J].计算机学报,2005,28(1):53-59. 被引量:8
  • 8Siwei Ma, Gao W. Rate Control for JVT Video Coding Scheme with HRD Considerations [C]// Proceedings International Conference on Image and Processing. Spain: IEEE 2003 : 793-796.

二级参考文献14

  • 1Video Group.Text of ISO/IEC 14496-2 MPEG4 video VMversion 8.0.ISO/IEC JTCl/SC29/WG11 Coding of Moving Pictures and Associated Audio MPEG 97/W1796,Stockholm,Sweden,July 1997.
  • 2Ortego A.,Ramchandran K..Rate-distortion methods for image and video compression.IEEE Signal Processing Magazine,1998,15(6):23-50.
  • 3Sullivan G.J.,Wiegand T..Rate-distortion optimization for video compression.IEEE Signal Processing Magazine,1998,15(6):74-90.
  • 4Hang H.-M.,Chen J.-J..Source model for transform videocoder and its application-Part 2:Foundamental theory.IEEE Transactions on Circuits and Systems for Video Technology,1997,7(2):287-298.
  • 5Chang T.,Zhang Y.-Q..A new rate control scheme using quadratic rate distortion model.IEEE Transactions on Circuits and Systems for Video Technology,1997,7(1):246-250.
  • 6Riabas-Corbera J.,Lei S.Rate control in DCT video coding for low-delay communications.IEEE Transactions on Circuits and Systems for Video Technology,1999,9(1):172-185.
  • 7Pan Feng,Li Z.,Lim K.,Feng G..A study of MPEG-4 ratecontrol scheme and its improvements.IEEE Transactions on Circuits and Systems for Video Technology,2003,13(5):440-446.
  • 8He Z.,Mitra S.K..A linear source model and a unified ratecontrol algorithm for DCT video coding.IEEE Transactions on Circuits and Systems for Video Technology,2002,12(11):970-982.
  • 9Yang Y.,Hemami S.S..Generalized rate-distortion optimization for motion-compensated video coders.IEEE Transactionson Circuits and Systems for Video Technology,2000,10(6):942-955.
  • 10Berger T..Rate Distortion Theory.Englewood Cliffs,NJ:Prentice Hall.1984.

共引文献8

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部