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At my work place, passport sized photographs are scanned together, then cut up into individual pictures and saved with unique file numbers. Currently we use Paint.net to manually select, cut and save the pictures.

I have seen Sony's Cybershot Camera has face detection. Google also gives me something about iphoto when searching for face detection. Picasa has facedetection too. Are there any ways to autodetect the faces in a document, which would improve productivity at my workplace by reducing the time needed to cut up individual images.

Sample Scanned Document(A real document has 5 rows of 4 images each=20 pics): (from: http://www.memorykeeperphoto.com/images/passport_photo.jpg, fairuse)

sample image

For eg. In Picasa 3.8, On clicking View> People, all the faces are shown and I am asked to name them, can I save these individual pictures automatically with the names as different pictures.

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Is face detection really necessary(you need to grab just the face) or is splitting the whole images what you really need to do...Most scanners support this out of box, and a simple script could split on CONSISTENT coordinates...just a thought. btw this would be on linux. Not 100% on windows – aking1012 Oct 6 '10 at 12:18
face detection is not necessary, but splitting them is. The problem is the photos are not placed uniformly as in the above image. manual placement into scanners creates haphazard arrangements plus the passport size images come in various sizes, 4x4, 5x4, 4x3 etc – abel Oct 6 '10 at 12:29
@aking1012 what did you mean by most scanners support this out of the box, i have a hp scanjet 2400 and a panasonic scanner – abel Oct 6 '10 at 12:49
if you don't have the pictures overlapping, most scanners I have used come with software that will split on the "perfect white" background – aking1012 Oct 6 '10 at 13:16
I don't have either one of those scanners at the ready, but I would look into the software provided - I have done this on another HP flatbed. – aking1012 Oct 6 '10 at 13:19
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