北京大学hrihri
首页 实验室概况 团队风采 科学研究 研究成果 合作交流 缤纷生活 新闻中心 English
  Research  
 
实验室新闻
    郝鹏威教授专题讲座
 

发布日期:2011年8月5日

 
 
    8月5日下午 3:00-6:00,郝鹏威教授“Optimal Integer Transforms for Image Coding”专题讲座在北京大学深圳
研究生院H214举行。来自清华、北大、哈工大三校的师生以及感兴趣的企业人士、社会人员等参加了本次讲座。讲座过程中,
郝教授认真详细的解答同学们提出的问题,并与大家分享了科研经验和方法,得到与会人员一致赞赏,大家均表示受益匪浅。
 ABSTRACT:
        Optimal integer transforms are constructed for the reversible integer transformation, low computational complexity, high image
coding performance, and some other properties. With a tool for transform visualization, co-histogram, we have found some nonlinear
transforms that are better than linear ones (e.g. DCT and KLT). Among those transforms, the infinity-norm rotation transform is the
best. The transform is a rotation in infinity-norm space, preserves the dynamic range, has a very low computational complexity, and
can be used for reversible data hiding, both lossless and lossy image coding.
SHORT BIOGRAPHY:
        Dr Pengwei Hao received the BSc. and MSc. degrees from Northwestern Polytechnical University, Xi'an, China, in 1988 and
1994, respectively, and the Ph.D. degree from the Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing,
China, in 1997. From 1997, he was with the Center for Information Science, Peking University, China, as a lecturer first and was
promoted to an associate professor in 1999. In 2002, he was appointed to Lecturer at Queen Mary, University of London, UK and got
tenured in 2005. He was one of the winners of the National Excellent Doctoral Dissertations, China, in 2000. He is a member of IEEE
and JPEG.
 
 
 
 
 
 
 
 
 
 
 
Copyright ? SZPKU-Open Lab on Human Robot Interaction.