分布式视频编码中的边信息优化算法
|
摘要
在分布式视频编码中的运动补偿插值算法通常采用正方形分块方案,然而考虑到视频中物体的运动和复杂的图像纹理结构,仅采用正方形分块不能得到优异的匹配效果。因此在基于小波域的分布式视频编码系统基础上,采用非规则分块方案来提取物体的边缘信息,从而提高运动估计时的匹配精度。实验结果表明,该方案在一定程度上能提高边信息质量。
Square block motion compensation interpolation algorithm is adopted in distributed video coding system usually.However,when taking the movement of the object and the complex image texture of the video sequence into consideration,the square block based scheme cannot receive excellent matching performance.In this paper,an irregular block motion estimation algorithm is adopted to belter extract the edge information of the objects to improve the matching precision in the wavelet domain distributed video coding system.Experimental result shows that this algorithm can improve the quality of side information effectively.
Square block motion compensation interpolation algorithm is adopted in distributed video coding system usually.However,when taking the movement of the object and the complex image texture of the video sequence into consideration,the square block based scheme cannot receive excellent matching performance.In this paper,an irregular block motion estimation algorithm is adopted to belter extract the edge information of the objects to improve the matching precision in the wavelet domain distributed video coding system.Experimental result shows that this algorithm can improve the quality of side information effectively.
引文
[1]SLEPIAN D,WOLF J.Noiseless coding of correlated infonnation sources[J].IEEE Trans.Information Theory,1973,19(4):471-480.
[2]WYNER A.ZIV J.Rate-distortion function for source coding with side information at the decoder[J].IEEE Trans.Information Theory,1976,22(1):1-10.
[3]DRAGOTTI P L,GASTPAR M.Distributed source coding:theory,algorithms and applications[M].[S.1.]:Academic Press,2009.
[4]GILMUTDINOV M.VESELOV A.FILIPPOV B.Analysis of side information generation impact on distributed video coding performance[C]//Proc.2012 XIII International Symposium on Problems of Redundancy in Information and Control Systems(RED 2012).[S.1.]:IEEEPress,2012:26-30.
[5]杨张.智海素,雷海军.DVC边信息估计中块匹配准则算法的研究[J].电视技术,2012,36(13):35-38.
[6]SHENG F.ZIHAN B,CHONGQING Z.et al.Improving side information quality using structure similarity for WZVC[C]//Proc.7th IEEE International Conference on.Image and Graphics(ICIG2013).[S.l.]:IEEE Press,2013:14-18.
[7]CHOI K H.LEE J Y.JEON B W.el al.Block boundary matching algorithm for generating side information in distributed video codec[J].Optical Engineering,2013,52(10):103-107.
[8]史萍,罗坤.分布式视频编码中边信息的产生[J].电视技术,2010,34(11):27-29.
[9]PARK S U,LEE Y Y,KIM C S,et al.Efficient side information generation using assistant pixels for distributed video coding[C]//Proc.Picture Coding Symposium(PCS 2012).[S.l.]:IEEE Press,2012:161-164.
[10]孟祯琪,朱金秀,朱顺五.DVC中基于块小波变换的边信息生成算法[J].Computer Engineering and Applications,2014,50(12):25-28.
[11]ZHANG D,WU Y,WAN M.Improved side information generation algorithm for Wyner-Ziv video coding[J].The Journal of China Universities of Posts and Telecommunications,2014,21(1):109-115.
[12]WU T C.HSU J H.LEE C M.et al.Efficient improvement of side information in GOB-based DVC system[C]//Proc.IEEE International Symposium on Circuits and Systems(ISCAS 2012).[S.l.]:IEEE Press,2012:1720-1723.
[13]LIU W.VUAYANAGAR K R.KIM J.Side information generaUon for distributed video coding using spatiotemporal joint bilinear upsampling[J].International Journal of Distributed Sensor Networks,2014(8):1-8.
[14]RUP S,MAJHI B,PADHY S.An improved side information generation for distributed video coding[J].AEU-International Journal of Electronics and Communications,2014,68(3):201-209.
[15]LIU W.DONG L.ZENG W.Motion refinement based progressive side information estimation for Wyner-Ziv video coding[J].IEEE Trans.Circuits and Systems for Video Technology,2010,20(12):1863-1875.
[16]BRITES C,ASCENSO J,PEREIRA F.Side information creation for efficient Wyner-Ziv video coding:classifying and reviewing[J].Signal Processing:Image Communication,2013,28(7):689-726.
[17]SULUVAN G J,OHM J,HAN W J,et al.Overview of the high efficiency video coding(HEVC)standard[J].IEEE Trans.Circuits and Systems for Video Technology,2012,22(12):1649-1668.
[2]WYNER A.ZIV J.Rate-distortion function for source coding with side information at the decoder[J].IEEE Trans.Information Theory,1976,22(1):1-10.
[3]DRAGOTTI P L,GASTPAR M.Distributed source coding:theory,algorithms and applications[M].[S.1.]:Academic Press,2009.
[4]GILMUTDINOV M.VESELOV A.FILIPPOV B.Analysis of side information generation impact on distributed video coding performance[C]//Proc.2012 XIII International Symposium on Problems of Redundancy in Information and Control Systems(RED 2012).[S.1.]:IEEEPress,2012:26-30.
[5]杨张.智海素,雷海军.DVC边信息估计中块匹配准则算法的研究[J].电视技术,2012,36(13):35-38.
[6]SHENG F.ZIHAN B,CHONGQING Z.et al.Improving side information quality using structure similarity for WZVC[C]//Proc.7th IEEE International Conference on.Image and Graphics(ICIG2013).[S.l.]:IEEE Press,2013:14-18.
[7]CHOI K H.LEE J Y.JEON B W.el al.Block boundary matching algorithm for generating side information in distributed video codec[J].Optical Engineering,2013,52(10):103-107.
[8]史萍,罗坤.分布式视频编码中边信息的产生[J].电视技术,2010,34(11):27-29.
[9]PARK S U,LEE Y Y,KIM C S,et al.Efficient side information generation using assistant pixels for distributed video coding[C]//Proc.Picture Coding Symposium(PCS 2012).[S.l.]:IEEE Press,2012:161-164.
[10]孟祯琪,朱金秀,朱顺五.DVC中基于块小波变换的边信息生成算法[J].Computer Engineering and Applications,2014,50(12):25-28.
[11]ZHANG D,WU Y,WAN M.Improved side information generation algorithm for Wyner-Ziv video coding[J].The Journal of China Universities of Posts and Telecommunications,2014,21(1):109-115.
[12]WU T C.HSU J H.LEE C M.et al.Efficient improvement of side information in GOB-based DVC system[C]//Proc.IEEE International Symposium on Circuits and Systems(ISCAS 2012).[S.l.]:IEEE Press,2012:1720-1723.
[13]LIU W.VUAYANAGAR K R.KIM J.Side information generaUon for distributed video coding using spatiotemporal joint bilinear upsampling[J].International Journal of Distributed Sensor Networks,2014(8):1-8.
[14]RUP S,MAJHI B,PADHY S.An improved side information generation for distributed video coding[J].AEU-International Journal of Electronics and Communications,2014,68(3):201-209.
[15]LIU W.DONG L.ZENG W.Motion refinement based progressive side information estimation for Wyner-Ziv video coding[J].IEEE Trans.Circuits and Systems for Video Technology,2010,20(12):1863-1875.
[16]BRITES C,ASCENSO J,PEREIRA F.Side information creation for efficient Wyner-Ziv video coding:classifying and reviewing[J].Signal Processing:Image Communication,2013,28(7):689-726.
[17]SULUVAN G J,OHM J,HAN W J,et al.Overview of the high efficiency video coding(HEVC)standard[J].IEEE Trans.Circuits and Systems for Video Technology,2012,22(12):1649-1668.