Batch object recognition in images, not face recognition

Asked Dec 07 '13 at 10:44

Active Dec 07 '13 at 17:16

Viewed 448 times

I've faced a problem of recognizing objects (see attachment below) of some kind in large heap of images:

I have a lot of images (N*10^7 full size images), which I need to crop. Some images are images which contain faces, that need to be cropped by center.

Also there are some photos without faces. These also need to be cropped by center.

And I have some images which contain objects (not face) in the bottom part. So, I can't crop it by center (cause I don't like to cut the object).

Thus, I need a fast way to detect images of these kind and crop most of those white areas on the top and crop images to a 220 x 220 px square with the object in the center. Is there any ready-to-go solution just-from-the-box? OpenCV didn't help much. Maybe you can advice something better?

https://i.stack.imgur.com/1s6yn.jpg

edited Dec 07 '13 at 17:16

mdml

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asked Dec 07 '13 at 10:44

Iliya Stepanov

Does all the images have a white background? – GilLevi Dec 07 '13 at 18:53
not sure. maybe kind of gray, or whiteblue. Or with minor shadow. – Iliya Stepanov Dec 09 '13 at 08:45
You could try Otsu's method to extract the object from the background or active contours. – GilLevi Dec 09 '13 at 15:08

Batch object recognition in images, not face recognition

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