Unknown size matrix-Cut image

Hello everyone..I want to create a matrix where I will put specific elements of a ROI (e.g. >0) but i do not know the size of the final matrix. Or else, I want to cut the image and keep only the ROI. How can I do that?

Answer 1

[Image Analyst]

You can use imrect() or rbbox() or imcrop() to crop the image to a smaller rectangle. Let us know if you can't figure out the code to do it.

[Ann G]

thank u for your help..I tried imcrop but it shows me error maybe because i dont give the right inputs. D=imcrop(K,[x y]); where x,y are different every time i run the algorithm and they are not just 4.