Copy pixels from one Matrix to other matrix

Hi all I have an image of size 256x384x3 then i divide the image into 4x4 blocks as

bs=4;
alp=0;
ca = mat2cell(rgbImage,bs*ones(1,size(rgbImage,1)/bs),bs*ones(1,size(rgbImage,2)/bs),3;
plotIndex = 1;
after that i generate a zero matrix of the image size and divide into blocks as
a=zeros(size(rgbImage));
aa = mat2cell(a,bs*ones(1,size(a,1)/bs),bs*ones(1,size(a,2)/bs),3);
plotIndex = 1;

Now What i want is to copy the few block from original image to the block of matrix a

I tried this

aa{37,88}=ca{37,88}

but fail. after copy blocks i want to reconstruct the a matrix. please help me how i can copy the selected block of original image into the block of the new matrix and then reconstruct the a which was my zero matrix

or if there is an other way that how i can copy the block of the original image into zero image.

thanks in Advance.

Answer 1

[Andrei Bobrov]

EDIT (block with size 64x64)

rgbImage = imread('861.jpg');
bs=64;
ca = mat2cell(rgbImage,bs*ones(1,size(rgbImage,1)/bs),bs*ones(1,size(rgbImage,2)/bs),3);
plotIndex = 1;
a=zeros(size(rgbImage),class(rgbImage));
aa = mat2cell(a,bs*ones(1,size(a,1)/bs),bs*ones(1,size(a,2)/bs),3);
aa(2,3)=ca(2,3);
amtx = cell2mat(aa);
imshow(amtx)

[M@lik Ali]

Thanks Andrei Bobrov for reply but when i run this command fallowing error occur.

Cell contents reference from a non-cell array object.

Error in ==> cell2mat at 44 cellclass = class(c{1});

Error in ==> segmen at 146 amtx = cell2mat(a);

[M@lik Ali]

how to reconstruct the new image from a selected region or selected blocks only.

[Andrei Bobrov]

Answer was corrected

[M@lik Ali]

andrei Thanks but Still the error is there Cell contents reference from a non-cell array object.

Error in ==> cell2mat at 44 cellclass = class(c{1});

Error in ==> segmen at 272 amtx = cell2mat(a);

[Andrei Bobrov]

Answer was corrected

[M@lik Ali]

Yes I tried the corrected answer but still the problem is there.

[Andrei Bobrov]

Give your image

[M@lik Ali]

ok I email you the image at [e-mail] i don't know how to upload here

[Andrei Bobrov]

Hi Muhammad!

First: your image and my answer was correct.

[M@lik Ali]

You received the image

[Andrei Bobrov]

answer was correct (see EDIT)

[M@lik Ali]

Thanks its work fine now..