New Padding Algorithm for Object-based Coding
The boundary macroblock padding is one key technology of MPEG-4 codes. In MPEG-4, the repetitive padding algorithm does not make use of the trend of pixel value variation often near object boundaries in padding the exterior pixels of reference video object In this paper, in order to improve performance of MPEG-4 coder, a linear padding for MPEG-4 motion estimation is proposed to reduce prediction errors and improve compression efficiency. In our test, the different video rate distortion curves verify that the proposed algorithm get the higher PSNR (0.4-2.5 dB) than the repetitive padding scheme does at different bit rate.
Motion estimati Padding MPEG-4
Liu Long Song Qijun Wang Zhanhui Zhou Haiyan
School of Xian University of Technology Xian, China China Electronic Systems Engineering Corporation Beijing, China School of Naval University of Engineering Wuhan, China Xinjiang Oilfiled Company Exploration and Development Research Institute Xinjiang, China
国际会议
2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)
上海
英文
566-569
2011-10-15（万方平台首次上网日期，不代表论文的发表时间）