[Magick-bugs] Quality problems on resizing a transparent GIF file

Oskari 'Okko' Ojala oskari.ojala+imagemagick at frantic.com
Wed Sep 6 07:38:10 CDT 2006


It appears that the most recent versions of ImageMagick have a problem 
with the image quality resulting from a resize.

When resizing a transparent GIF the resulting image's quality has degraded 
notably from 6.2.3-6, the last version that produced great results.

For a test image and comparison between 6.2.1-6, 6.2.3-6, 6.2.4-6, 
6.2.5-5, 6.2.6-8, 6.2.7-8, 6.2.8-8, 6.2.9-1 and 6.2.9-3 please see this 
page:

 	http://www.frantic.com/okko/imagemagick/

Command used to configure ImageMagicks:

./configure --prefix=/opt/test/imagemagick_$VERSION-$MINORVERSION 
--without-xml --enable-shared=yes


Commands used to generate the images:
convert logo_aladdin.gif -verbose -resize 64x64\> result.gif
convert logo_aladdin.gif -verbose -resize 300x300 result.gif


Is there any workaround I could use?

--
Oskari "Okko" Ojala
Senior Software Developer
Frantic Media
http://www.frantic.com/


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