How to crop an image and automatically crop another image with same positioning?

i have a GUI like this

how to crop an image from axes, when i click the "crop" button and automatically crop with same position in another image when i click "crop2" button, thanks before,

Answer 1

[Sean de Wolski]

One of the outputs from imcrop is the bounding rectangle. Here's a quick example:

I = imread('cameraman.tif');
II = imread('peppers.png');
II = imresize(II,size(I)); % same size

[Icrop,rect] = imcrop(I);
IIcrop = imcrop(II,rect);

subplot(1,2,1)
imshow(Icrop)
subplot(1,2,2)
imshow(IIcrop)

Answer 2

[Chad Greene]

Those look like Landsat 8 images. With geoimread, you can specify a bounding box of lat/lons or map x/y coordinates and only load pixels corresponding to that bounding box.

Using geoimread, the user could click a "select region" button which you could program to call inputm. When the user's done entering points, she could click "crop" and coordinates from inputm could then be entered into geoimread.

[mike]

thanks Chad, but when i want to crop the another image, how i can know the position?so that both image has a same position/cordinates? can you help me? thanks

[Chad Greene]

When the user clicks a bounding box in image A (calling inputm), use those coordinates to load only that region in images A and B with geoimread.

[mike]

sorry chad, i dont completely understand what you mean, can you explain with simple code about that, thanks for helping

[sandra viaña borja]

Hello Mike How did you solve this? I have the same problem, and when I get the second image cropped, there is a lillte spatial difference between both images. I will appreciate if you could help me.