Finding image in image

[anthony]

Yes it is posible, but depend on exactly what you are trying to find.

The simplist methof would be to make a copy of the image, trash all the unwanted colors, say using
-fill white -bordercolor red -draw 'color 0,0 border'
to leave just the red colors.

Then -trim the image and look at the info: output, to see what the image trimmed down to. That will be the size and location of your red pixels.

For a simular example of trashing images and trimming to locate some object
see.. Triiming 'Noisy' Images
http://www.cit.gu.edu.au/~anthony/graph ... #trim_blur

Just replace the blur-fuzz parts with your color trashing function.