Error in mat2cell because of the size of the image have anyone solution for that?

    rgbImage = imread('image.jpg');

    [rows, columns , numberOfColorBands] = size(rgbImage);
  Greenlayer = rgbImage(:,:,2);
    blockSizeR = 8;
    blockSizeC = 8; 

    wholeBlockRows = floor(rows / blockSizeR);
    blockVectorR = [blockSizeR * ones(1, wholeBlockRows), rem(rows, blockSizeR)];

    wholeBlockCols = floor(columns / blockSizeC);
    blockVectorC = [blockSizeC * ones(1, wholeBlockCols), rem(columns, blockSizeC)];
    ca = mat2cell(Greenlayer, blockVectorR, blockVectorC);

when I run this code with image of size 512*384 It works ,but if I run it on other size the following error occur have anyone any idea for the solution of this problem please and here is the error msg

Error using mat2cell (line 107)
Input arguments, D1 through D2, must sum to each dimension of the input
matrix size, [1648  2336].'
     ca = mat2cell(Greenlayer, blockVectorR, blockVectorC);

thanks...

Answer 1

[Image Analyst]

You're doing it on a 3D full color image - that's why it says that. You should probably do it one color channel at a time. If you do that it should not complain.

[Ameligege]

 I forgot to submit that line of code ,I edited the code in the question but I still have the same problem

[Image Analyst]

I just ran it with a grayscale 1648 x 2336 image and there was no error at all.

[Ameligege]

you are right , When I ran it in separate script it ran ,but with the rest of the code this error occur I will check the rest of the code to see where the problem is.