Given a screenshot of an application, is there any way of finding GUI elements of that application using only opencv? (something like in the image) 
I tried to play with blending the image and other effects from the coherence.py sample in the opencv installation folder. Did not succeed to get a viable result.
Has anyone did this? Do you have any idea what I might try?
Thanks
(I'm new to opencv and image processing so please don't avoid obvious explanations if possible) :)
Answer
OpenCV's MSER extractor (documented here) might be helpful — the bounding box of local MSER groups would pretty closely match the green rectangles in your mockup.
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