MATLAB: How to crop image selected area

croppingimage processingImage Processing Toolbox

I want to landmark points to image then crop image selected area. How to crop?

Try impoly() or roipolyold().

To crop you can use imcrop(), or simply use indexing:

croppedImage = fullImage(row1:row2, col1:col2);

Use imtile() instead.

rgbMulti = imtile(...............
grayImage = rgb2gray(rgbMulti);