imagemagick: How to crop a picture and paste it elsewhere on the same picture?

Question

What I want:

Using ImageMagick I crop a part of the picture and then paste it somewhere else on the same picture.

Eg:

What I tried:

convert in.jpg -page +0+300 \( -clone 0 -crop 650x600+0+300 \) -flatten out.jpg

Result:

The issue:

The cropping starts from (0,0) of the image. I can't figure out a way use an offset.

How can I crop a portion that is in the middle of a picture and paste it somewhere else on the same picture using ImageMagick?

Answer 1

In ImageMagick, you do that using -gravity and -geometry with -composite.

Here I set -gravity center for the crop, then -gravity northwest for the composite. I crop a region from the center and move it to the right:

convert pic.jpg \
\( +clone -gravity center -crop 650x600+0+0 +repage \) \
-gravity northwest -geometry +1200+300 \
-compose over -composite result.jpg

Here I set -gravity center for the crop, then -gravity center for the composite. I crop a region from the center and move it to the right.

convert pic.jpg \
\( +clone -gravity center -crop 650x600+0+0 +repage \) \
-gravity center -geometry +500-100 \
-compose over -composite result2.jpg