On the Performance Improvement of H.264 through Foreground and Background Analyses

• Main Authors: Zhe-Kuan Lin, 林哲寬
• Other Authors: Jen-Hui Chuang
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/46397460022010517607

碩士 === 國立交通大學 === 資訊科學系所 === 92 === The objective of this thesis research is to study possible improvements of the encoding performance of the H.264 video standard given the foreground and background models of the source video sequence. The encoding performance is measured in three aspects: the PSNR, bit-rates and coding speed. By analyzing the variable block-size and rate-distortion coding tools of H.264, we propose two different encoding methods for the video foregrounds and backgrounds to enhance the video quality of the foreground objects and to reduce the compression bit-rates of the background area while ensure that the syntax and semantics of the encoded bit-streams agree with H.264. Experimental results show the proposed methods are quite effective in the performance improvement of the H.264 encoding.