静止图像压缩标准JPEG和JPEG2000的多尺度模式-《计算机技术与发展》

文章信息/Info

Title:: Multi - Scalability Mode of Still Image Compression Standard JPEG and jPEG2000

Author(s):: ZHOU Xiao-yan; WANG Ji-cheng; Department of Computer Science and Engineering, School of Electronic and Information Engineering,Tongji University

Keywords:: multi-scahbility; JPEO; JPEG2000; progressive mode; hierarchical mode

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。JHB（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

Abstract:: 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