Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Zhejiang University(Engineering Science)》 2014-06
Add to Favorite Get Latest Update

Low complexity video transcoding algorithm from H.264 to HEVC

JIANG Wei;TIAN Xiang;CHEN Yao-wu;Institute of Advanced Digital Technology and Instrumentation,Zhejiang University,Zhejiang Provincial Key Laboratory for Network Multimedia Technologies;  
A low complexity video transcoding algorithm from H.264video to the next generation video compression standard the high efficiency video coding(HEVC)was proposed in order to reduce the computational time consumed during the transcoding process.By making full use of the H.264compressed video information included in the bitstream,the coding complexity of each frame was analyzed based on the correlation between image complexities and coding bits,and then the searching depth range was adaptively decided based on the analysis results.By exploiting the mapping correlations of Skip mode in HEVC and all modes in H.264,an early decision of Skip mode was then introduced.Through the statistical analysis of coding bits,a fast prediction unit partition selection for both symmetric and asymmetric partitions was described.Finally,the motion estimation process was optimized according to the motion similarity between H.264and HEVC bitstreams.Experimental results show that,compared to the reference methods,the proposed algorithm achieves a significant improvement on transcoding speed,while maintaining similar rate-distortion performance.
【Fund】: 国家自然科学基金资助项目(40927001);; 浙江科学技术创新团队资助项目(2011R09021-02);; 中央高校基本科研业务费专项资金资助项目
【CateGory Index】: TN919.81
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved