期刊文献+

Improved fast inra prediction algorithm of H.264/AVC 被引量:5

Improved fast inra prediction algorithm of H.264/AVC
下载PDF
导出
摘要 With advanced prediction modes of intra prediction, intra coding of H.264/AVC offers significant coding gains compared with previous video coding standards. It uses an important tool called Lagrangian rate-distortion optimization (RDO)technique to decide the best coding mode for a block, but the computational burden is extremely high. In this paper, we proposed an improved fast intra prediction algorithm including block type selection and mode decision algorithm based on analysis of edge feature of a block. Our algorithm filters out unlikely block type and candidate modes to reduce the RDO calculations. Experimental results showed that the proposed algorithm can reduce the computation complexity of intra prediction from 52.90% to 56.31%, with 0.04 dB PSNR degradation and 2% increase of bit rate. With advanced prediction modes of intra prediction, intra coding of H.264/AVC offers significant coding gains compared with previous video coding standards. It uses an important tool called Lagrangian rate-distortion optimization (RDO) technique to decide the best coding mode for a block, but the computational burden is extremely high. In this paper, we proposed an improved fast intra prediction algorithm including block type selection and mode decision algorithm based on analysis of edge feature of a block. Our algorithm filters out unlikely block type and candidate modes to reduce the RDO calculations. Experimental results showed that the proposed algorithm can reduce the computation complexity of intra prediction from 52.90% to 56.31%, with 0.04 dB PSNR degradation and 2% increase of bit rate.
机构地区 School of Computer
出处 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2006年第z1期101-105,共5页 浙江大学学报(英文版)A辑(应用物理与工程)
基金 Project (No. 60472040) supported by the National Natural Science Foundation of China
关键词 H.264 AVC INTRA prediction VIDEO CODING H.264, AVC, Intra prediction, Video coding
  • 相关文献

参考文献6

  • 1[1]Cheng,C.C.,Chang,T.S.,2005.Fast three step intra prediction algorithm for 4/spl times/4 blocks in H.264.Circuits and Systems,2:1509-1512.
  • 2[2]Fu,F.W.,Lin,X.G.,Xu,L.D.,2004.Fast Intra Prediction Algorithm in H.264/AVC.Proceeding ICIP 2004.
  • 3[3]H.264/AVC reference software JM9.5,2005.
  • 4[4]ITU-T Rec.H.264/ISO/IEC 14496-10 AVC,2003.Draft ITU-T Recommendation and Final Draft InternationalStandard of Joint Video Specification.
  • 5[5]Meng,B.,Au,O.C.,2003.Fast intra-prediction mode selection for 4×4 blocks in H.264.Proc.of IEEE Int.Conf.on Acoustics,Speech,and Signal,3(6-10):389-392.
  • 6[6]Pan,F.,Lin,X.,Rahardja,S.,Lim,K.P.,Li,Z.G.,Wu,D.J.,Wu,S.,2005.Fast mode decision algorithm for intraprediction in H.264/AVC video coding.IEEE Trans.on Circuits Syst.Video Technol.,15(7):813-822.[doi:10.1109/TCSVT.2005.848356]

同被引文献23

引证文献5

二级引证文献9

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