How do i cut the unnecessary portion from image other than edge of canal?

n=imread('Canal_Images\a7.jpeg'); imshow(n); title('original');

img=rgb2gray(n); imshow(img);

b=edge(img,'canny');

imshow(b); title('canny');

After this, I need to cut the remaining portion other than the edge of the canal. So I need to cut the image to focus only on edge.How can I do it now?

Answer 1

[KSSV]

Read imcrop .

[Jainee Solanki]

I have to analyze so many canal images. How can I do cropping automatically? Plz send me the code of possible

[Image Analyst]

See the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F