针对新一代的视频编码标准HEVC(high efficient video coding),提出一种改进的精细可分级编码方案.该方案的基本层采用HEVC的编码器,提高了基本层的编码效率;通过统计编码单元的分割方式,自适应找到图像中的细节区域;采用选择增强技术,提高细节区域的图像质量.实验结果表明:编码方案能够精细匹配信道带宽的变化,且基本层与增强层相互独立,不会带来误差传递;利用HEVC编码单元的分割方式,可以自适应找到视频序列图像中的细节区域,对运动区域进行提升,视频图像的主观质量有了很大的改善.
References
[1]
郑夜星.精细可分级视频编码算法研究[D].厦门:华侨大学,2010:8-14.
[2]
HE Yu-wen,WU Feng,LI Shi-peng,et al.H.26L-based fine granularity scalable video coding[C]//IEEE International Symposium on Circuits and Systems.Scottsdale:ISCAS,2002:548-551.
BROSS B,HAN W J,OHM J R,et al.High efficiency video coding(HEVC)text specification draft 10(for FDIS & Consent), JCTVC-L1003_v2[R].Geneva:Joint Collaborative Team on Video Coding,2013:1-296.
[7]
LI Wei-ping.Overview of fine granularity scalability in MPEG-4 video standard[J].IEEE Transactions on Circuits and Systems for Video Technology,2001,11(3):301-317.
[8]
饶琴.精细粒度可分级编码算法研究[D].厦门:华侨大学,2011:20-22.
[9]
KIM S,HO Y-S.HVS-based frequency weighting for fine granular scalability[J].Proc Information Communication Technologies,2003,8(10):127-131.
[10]
周孝.精细可分级编码技术的研究[D].厦门:华侨大学,2008:19.
[11]
王相海,宋传鸣.图像及视频可分级编码[M].北京:科学出版社,2009:24.
[12]
HAN W J,MIN J,LEE T,et al.Improved video compression efficiency through flexible unit representation and corresponding extension of coding tools[J].IEEE Transactions on Circuits and Systems for Video Technology,2010,20(12):1709-1720.
[13]
BOSSEN F,FLYNN D,SUEHRING K.HEVC HM10 reference software, JCTVC-L1010[R].Geneva:Joint Collaborative Team on Video Coding,2013:1-4.
