I need some help to plot getrect selected portion of a picture. How can i plot it after getting coordinates. here what i have done yet. If there is a simple way please mention it.

fullFileName = fullfile(folder, baseFileName)
crack = imread(fullFileName); %This file is of bmp formate
[rows, columns, numberOfColorChannels] = size(crack);
imshow(crack)
title('Select The Crack', 'FontSize', captionFontSize);
grid on;
uiwait(helpdlg('Select the Crack in Crack Image.'));
rect=getrect;
% Get the x and y co-ordinates
rect(1) = max(floor(rect(1)), 1); %xmin
rect(2) = max(floor(rect(2)), 1);%ymin
rect(3)= min(ceil(rect(1) + rect(3))); %xmax
rect(4)=min(ceil(rect(2) +rect(4))); %ymax
% Index into the original image to create the new image
MM=crack(rect(2):rect(4), rect(1): rect(3),:);
image(MM)
imsave

Answer 1

[Ameer Hamza]

Directly pass the rect to imcrop(): https://www.mathworks.com/help/images/ref/imcrop.html

rect=getrect;
MM = imcrop(crack, rect);
image(MM)

[Ali Raza]

When i do this only a black screen appear.

[Ali Raza]

The picture i am using is Binary image with .bmp formate.

[Ameer Hamza]

Instead of image() use imshow()

crack = imread('image.bmp');
imshow(crack)
rect=getrect;
MM = imcrop(crack, rect);
imshow(MM)