[Zope] Re: image hot fix

[Jerome Alet]

On Mon, 27 Aug 2001, Ausum wrote:

> On the other hand I'd like to point out that PIL - although it's a familiar
> Python native library to work with-  has serious lacks of image quality
> after resampling. The jaggy look of thumbnails is unpleasant for a
> professional site. Why is that?  I've tested the three available methods
> (nearest, bilinear and bicubic), with a large-size image (2000 X 1500 or so)
> finding that at a thumbnail level all the samples looked the same. And
> bicubic is the best known (and costly) resample method. A search at the
> Image-sig archives also reveals the problem, apparently leading  to the use
> of GIMP with a Python interface -instead of PIL-, when quality becomes a
> concern.
> 
> Has anyone found a workaround for the jaggy look of PIL's resized images in
> Zope?

Nothing to do with Zope (yet), but I've written a specific web site
generator in Python for the online atlas of neurooncology of the ANOCEF
with a lot of pictures taken from a slide scanner (Epson filmscan 200) and
automatically resized to three different sizes
(http://anocef.unice.fr/atlasneuro/)  using ImageMagick. 

This pictures really HAVE to be clean and nice even at thumbnail size, and
according to all the professionals and specialists involved they are very
good. 

So maybe you could give a look at ImageMagick, especially the "mogrify" 
command. I've used it only from os.system, but AFAIK there's a python
module for ImageMagick which may produce better results than PIL
(untested), it's called PyMagick IIRC.

hoping this helps.

bye,

Jerome Alet - alet@unice.fr - http://cortex.unice.fr/~jerome
Fac de Medecine de Nice        http://wwwmed.unice.fr 
Tel: (+33) 4 93 37 76 30     Fax: (+33) 4 93 53 15 15
28 Avenue de Valombrose - 06107 NICE Cedex 2 - FRANCE