I have followed the steps in the lwr2 page of documentation but i hace error
My image size is 512 x 512
j=imread('F:\MAT WORK\COVER OBJECT\cranial scan.jpg'); >> haarint=liftwave('haar','int2int'); >> [cA cH cV cD]=lwt2(j,haarint); ??? Error using ==> plus Integers can only be combined with integers of the same class, or scalar doubles.
Error in ==> lsupdate at 43 y = y + t(:,1:sx(2),:);
Error in ==> lwt2 at 106 case 'd' , H = H + lsupdate('r',L,liftFILT,DF,sH,LStype);
You should tell us more about your image. What is it's size and class?
Does the following work for you? It should.
liftscheme = liftwave('haar','int2int'); imdata = imread('ngc6543a.jpg'); [cA cH cV cD]=lwt2(imdata,liftscheme);