Crop a part of binary image

I want to cut the head of the screw. I turned the image straight and cut out the white part but I can't figure out how to cut the head off. Thanks in advance.

[KSSV]

Read about imcrop.

[Rik Steens]

Thanks for your response I understand that I need this function. But i want an kinf of automatic way yo detect the head of the screw and cut it off, I need this code for a bigger project

Answer 1

[Rik]

My suggestion would be to determine the number of white pixels in each column, and use an automatic way to determine a threshold for what width is head and what width is screw. Don't use limits like '100% width' and 'smallest width', because that will miss part of the head, and might cut of all the screw.