itrans.m

Sphit算法针对１２８*１２８的灰度图象进行压缩处理

function x1=itrans(x,wname)

dwtmode('per','nodisp');
x1=idwt2(x(1:8,1:8),x(1:8,9:16),x(9:16,1:8),x(9:16,9:16),wname);
x1=idwt2(x1,x(1:16,17:32),x(17:32,1:16),x(17:32,17:32),wname);
x1=idwt2(x1,x(1:32,33:64),x(33:64,1:32),x(33:64,33:64),wname);
x1=idwt2(x1,x(1:64,65:128),x(65:128,1:64),x(65:128,65:128),wname);
x1=fix(x1);
x1=x1+100;
%imshow(mat2gray(x1))