[magick-users] Using identify for unique IDs

[Adam Goldberg]

Hi -- I'm currently using identify's signature as a way to generate
unique ids based on images for my photo gallery.  I'd like to use a
file-based method to generate ids so that I can determine an image's
ID from the file alone.  I opted not to use md5 sums of the file
because if I ever change exif data from the photo in iPhoto, such as
the date/time, the hash would change.  The problem is that identify
--verbose is REALLY slow when processing raw images, let alone videos
...  Is there a faster way to do this?

Thanks for your help,
Adam