On 2011-08-08 04:09, Greg Corradini wrote: > I want to use PIL to scan a newly created image for possible corrupt > (blank) pixels. > > The PIL documentation doesn't seem to mention what value a blank pixel > might have (I assume it would come back as None). I'm not sure what to > test for.
It is going to depend on (a) the format of the image file and (b) your definition of what a "blank pixel" is. (Black? White? Something else?) You could do a brute force check of each pixel's value, or depending on your definition, you might be able to use something like the histogram method to see if any pixels meet your criteria. > I see the Image module has a verify function > <http://www.pythonware.com/library/pil/handbook/image.htm>, but I'm not > sure if that covers validating that pixels are not blank. I believe it only detects if PIL will be able to load the specified image file. -- Jim Tittsler http://www.OnJapan.net/ GPG: 0x01159DB6 Python Starship http://Starship.Python.net/crew/jwt/ Mailman IRC irc://irc.freenode.net/#mailman _______________________________________________ Image-SIG maillist - Image-SIG@python.org http://mail.python.org/mailman/listinfo/image-sig