How to divide a grayscale image in two blocks

Question

Nourou 2014-8-10

回答： Image Analyst 2014-8-10

Hi,

Please I want to divide a grayscale image into two halves? Then, after dividing it make each half independent, say

A = top half and

B = the bottom half.

So that I can extract features from each half.

I read some similar questions, and get a code as:

n=fix(size(B,1)/2) //B is the grayscale image
C=B(1:n,:,:);
D=B(n+1:end,:,:)
figure,imshow(C)
figure,imshow(D)

It's almost working, but the results are 2 blank images(C and D).

Really need your help asap, thank you all!

Ahmet Cecen 2014-8-10

There is no reason why the above shouldn't work. I can't suggest anything further without seeing the image. Attach the original image as a .mat file.

Answer 1

Image Analyst 2014-8-10

Maybe somehow they got to be floating point. Use

imshow(C, []);
imshow(D, []);