I’ve always wondered if there exists a simple way to “cut” a small rectangular region from an image with numerical precision. It’s pretty easy to do it with Gimp.
First thing, we need to open the image. We’re going to select an exact 100 x 150 rectangle of the man wearing glasses.
Then, open the toolbox and choose the “Rectangle select tool” (first icon). Select any region, like I did (in green). Also, note that the coordinates of the cursor are shown in the left bottom of Gimp (in red). Move the cursor to the top left corner of the region you want to crop. I chose (531, 271).
Now, go back to the toolbox. Right under the tools icons, there are the parameters of the current tool selected, in the case the “Rectangular select tool”. In the “Position”, put the coordinates of the desired top left corner. In my case, it will be the previously chosen (531, 271). In “Size”, we put the desired dimensions of the rectangular region. In our case, is 100 and 150, width and height respectively.
Now, go to the top menu and select:
Image > Crop to Selection
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