静止图像压缩标准JPEG和JPEG2000的多尺度模式  

Multi-Scalability Mode of Still Image Compression Standard JPEG and JPEG2000

作　　者：周晓燕[1] 王继成[1] 

机构地区：[1]同济大学电子与信息学院计算机科学与工程系,上海200092

出　　处：《计算机技术与发展》2007年第1期12-14,17,共4页Computer Technology and Development

摘　　要：随着多媒体的兴起,大量的图像信息需要在网络上传输,为减轻网络负载和适应不同的应用需求,图像被要求以多尺度传输。JPEG(由ITU和ISO共同建立)是如今被广泛采用的静止图像标准,而JPEG2000是继JPEG之后最新的静止图像标准。先理解图像的多尺度概念,然后结合国内外的现状,分别就JPEG和JPEG2000的多尺度模式进行了详细描述及其部分实现,再对两者进行了比较讨论,最后得出结论:最新的JPEG2000标准实现的多尺度模式更全面、更简便、更优越,尤其是它还可以嵌入式地实现,但也仍有不足。With the development of mukimedia, a great of image information needs to be transported, so intend to relief the capability of Internet and satisfy diverse requirement of applications, image should be transported with multi- scalability. Up to date, JPEG is widely used for still image compression, and JPEG2000 is the most update. Firstly explain the notion of multi - scalability. Then addresses the multi - scalability mode used and their implementation in JPEG and JPEG2000, and discusses their difference, and gives opinions as well. Lastly,come to a conclusion, compared with JPEG, JPEG2000 is more full - scale, and also superior, especially its multi- sealability can be implemented embedded, but also has some shortages.

关 键 词：多尺度模式 JPIB JPEG2000 渐进模式 分级模式 

分 类 号：TN919[电子电信—通信与信息系统]