???x=imread（‘lena.bmp‘）;?
???x=double（x）;
???%?decompose?
???y=waveletcdf97（x4）;?
???%?show?decomposed?result?
???figure;imshow（mat2gray（y））;?
???%?reconstruct?without?change?of?anything?
???ix=waveletcdf97（y-4）;?
???%?show?and?compare?the?original?and?reconstructed?images?
???figure;subplot（121）;imshow（uint8（x））;subplot（122）;imshow（uint8（ix））?
???%?look?at?the?MSE?difference?
???sum（sum（（double（x）-ix）.^2））/numel（x）

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2013-03-28?15:45??DWT\
?????文件?????????436??2013-03-28?15:23??DWT\DWT4.m
?????文件??????263222??2012-10-18?08:52??DWT\lena.bmp
?????文件????????5844??2012-10-24?10:10??DWT\waveletcdf97.m