[Image-SIG] PIL uses obsolete JPEG decoder

2011-10-24 Thread Christopher Jones
PIL 1.1.7 exhibits the problem discussed below. Guido at the Independent JPEG Group http://www.ijg.org/ recommends updating the JPEG decoder to avoid this problem. Christopher Jones Sydney Australia http://chrisjones.id.au/ -- Forwarded message -- From: Guido Vollbeding gu

[Image-SIG] PIL histogram bin 255 empty

2007-09-25 Thread Christopher Jones
With mode I images, the histogram method sometimes returns bin 255 empty, counting the getextrema maximum value in bin 254 instead. Is this a bug or is bin 255 treated in a special way, perhaps to count clipped pixels? Chris Jones ___ Image-SIG maillist

[Image-SIG] PIL QUAD transform

2006-10-26 Thread Christopher Jones
I have just discovered that the QUAD transform is not perspective: it does not preserve straight lines in the original image. Any way of doing a perspective transformation? Chris Jones ___ Image-SIG maillist - Image-SIG@python.org