%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%??
%?the?K-SVD?basis?is?selected?as?the?sparse?representation?dictionary??
%?the?OMP??algorithm?is?used?to?recover?the?image??
%?Author:?zhang?ben?ncuzhangben@qq.com??
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%??
%*****************************?read?in?the?image?**************************??
img=imread（‘lena.bmp‘）;?
img=rgb2gray（img）;%?read?in?the?image?“l(fā)ena.bmp“??
img=double（img）;??
[Nn]=size（img）;???
img0?=?img;??%?keep?an?original?copy?of?the?input?signal??
%****************form?the?measurement?matrix?and?Dictionary?***************??
%form?the?measurement?matrix?Phi??
Phi=randn（Nn）;?????
Phi?=?Phi./repmat（sqrt（sum（Phi.^21））[N1]）;?%?normalize?each?column??
%fix?the?parameters??
param.L?=20;???%?number?of?elements?in?each?linear?combination.??
param.K?=150;?%number?of?dictionary?elements??
param.numIteration?=?50;?%?number?of?iteration?to?execute?the?K-SVD

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????2199??2017-09-14?15:45??k-svd\demo.m

?????文件??????12776??2017-09-14?15:36??k-svd\KSVD.m

?????文件?????786486??2014-09-28?03:10??k-svd\lena.bmp

?????文件???????1147??2017-09-14?14:42??k-svd\OMP.m

?????目錄??????????0??2017-09-14?16:16??k-svd

-----------?---------??----------?-----??----

???????????????802608????????????????????5