[Image-SIG] PIL anti-aliasing issue on Opteron with Suse 8.2 Linux

Bill Janssen janssen at parc.com
Fri Oct 31 20:56:27 EST 2003

I've been trying some PIL operations on a new 64-bit Opteron running
Suse 8.2.  It more or less works, but I've found one odd failure mode.
I read a TIFF file in, mode == 'P' or '1', then convert it to RGB,
then scale that version to 1/10 the original size, using
Image.ANTIALIAS.  The result is all black, though the image is mainly
white.  If I use Image.BICUBIC, or Image.BILINEAR, or anything else,
the reduced-size image looks right.  It just fails with

I don't know whether this is a 64-bit issue, a little-endian issue (I
usually work on Suns or Macs), a gcc 3.3 issue, or just what.  Any
ideas would be much appreciated.


More information about the Image-SIG mailing list