Re: face quantization

[Reiner Steib <reinersteib+gmane@imap.cc>]

On Thu, Oct 27 2005, Didier Verna wrote:

>         I don't know why, but recent modifications on the face code
> broke my faces. They seem to have much less colors than before,
> while being of the same size (in the header I mean). Has the
> quantization algorithm been modified recently ?

The algorithm in `gnus-face-from-file' itself hasn't changed.
But the default of `gnus-convert-image-to-face-command' is
  "convert -scale 48x48! %s -colors %d png:-"
instead of
  "djpeg %s | ppmnorm | pnmscale -width 48 -height 48 | ppmquant %d | pnmtopng".

It's quite possible that the convert differs from the later.  Could
you investigate?

My intention was to allow more input formats (for both, X-Face and
Face [1]).  But if convert is not doing a good job, we could change
the default back to use djpeg and the netpbm tools.

Bye, Reiner.

[1] Cf. your comment in `gnus.texi':

| 6.528 (didier 18-Jun-03):
| @c #### FIXME: faces and x-faces'implementations should really be harmonized.
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