多媒体图像压缩方法与小波变换

IMAGE COMPRRESSED MATHODS OF MULTIMEDIA AND WAVELET TRANSFORMATION

首先分析了ＪＰＥＧ（ＪｏｉｎｔＰｈｏｔｏｇｒｏｐｈｉｃｓＥｘｐｅｒｔＧｒｏｕｐ）．ＭＰＥＧ（ＭｏｔｉｏｎＰｉｃｔｕｒｅＥｘｐｅｒｔＧｒｏｕｐ）及Ｐ×６４等信息压缩编码的特点，然后简述了“小波变换”的概念、原理、方法．着重讨论了利用“小波变换”对上述信息压缩编码方法进行改在的可行性．针对“小波变换”在信息压缩编码中的应用、今后的发展和存在的问题进行了比较出入的讨论．在４８６微机上建立了实验系统。

Abstract The special features of the compressed inforrnation encoding metheds\JPEG( JointPhotogrophics Expert Group),MPEG(Motion Picture Expert Group)and p×64 wereanalysed.Then the basic concepts,principles and method of the wavelet change were stat-ed,An the possibility to reform the image information compressed methods by using waveletchange was discussed emphatically. The anthors have also discussed the wavelet change ap-plication in the information compressed enceding,the future development and the problemsexisted. On the basis of that an experimental system has been set up, as a result,the bettereffect can be obtained by the methods.SUBJECT TERMS:multimedia,wavelet transformation,image data,compression informa-tion,compression coding