If you're using a version of Photoshop with face manipulation in the Liquify plugin, this isn't too difficult to do with actions. After seeing this post I figured I'd see if I could figure out a non-script plugin for out of the box Photoshop. It wasn't too hard. Basically the action does this: 1. Duplicate the image. 2. Run liquify on the image to edit the scale of elements of the face. 3. Use difference blending to identify changes to the face elements and isolate. 4. Scale that isolation up to give you a desired outside edge of your crop. 5. Use cropping methods to size properly and crop to a square. 6. Delete all but the background. The scaling of the isolated face elements defines how tight you crop on the faces, so changing Transform Current Layer with aspect ratio locked will allow for that to be changed. This action is set to scale to 200x200 pixels using landscape or portrait detection. Changing both of those Image Size settings will allow for different thumbs. Add your prefered saving method and run it with a batch. It seems to work great for me. CropOnFace.zip As a note, it is a little limited. I've only run it on images with single individuals. It will only work on the first face Liquify selects. You can probably use Liquify's multiple face selection to set up different versions of the action for 2, 3, 4, etc..., but they would most likely error when the count is more than the available faces.
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