I have divided an image into 32x32 blocks. Now I want to combine these blocks to recover the original image. How can I do this using matlab?

This is the code I use to divide the image in to blocks:

```
C=imread('lena.jpg');
C = rgb2gray(C);
C=imread('D1.gif')
x2=im2double(x1);
[m,n,k]=size(x2) % and m=n with 1 channel k=1
ImageSize=m*n;
BlockD=32;
BlockSize=BlockD*BlockD;
NoOfBlock=ImageSize/BlockSize;
SubB=zeros(BlockD,BlockD,NoOfBlock); %arrays of blocks.
X=zeros(BlockD,BlockD,NoOfBlock);
% important to convert uint8 to double when dialing with image.
% thats what ru asking for.
k=1;
for i=1:BlockD:m
for j=1:BlockD:n
x(:,:,k)=x2(i:i+BlockD-1,j:j+BlockD-1);
k=k+1;
end
end
```