Does anybody have a pointer to a Python library/utility that will extract the chrominance and luminance quantization tables from JPG images?
I have been using the _getexif method from PIL, which works fine, but doesn't extract the quantization data. I am a bit fuzzy on the terminology, but the quantization data seems to be JPEG data rather than EXIF data. One utility that extracts the quantization tables is JPEGsnoop -- there is a link to download the utility here: http://www.impulseadventure.com/photo/jpeg-quantization.html The source code for the above isn't available and may not be callable from a Python script even if it were available. Roger -- http://mail.python.org/mailman/listinfo/python-list
