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Poor quality ps -> jpeg conversion with newer imagemagick

Posted: 2010-02-09T10:42:33-07:00
by opoplawski
With IM 6.2.8.0 on Centos 5.4 I'm able to convert following ps file:

http://www.cora.nwra.com/~orion/im/ke.ps

to jpeg and get decent lines and text quality:

Image

Using a newer versions 6.5.1.2 and 6.5.8.10 on Fedora 11/12 I get lousy lines and text quality:

Image

Other tests show png -> jpeg with poor quality, ppm -> jpeg look fine. Interestingly, with recent IM, convert uses the pngalpha device for gs conversion, and pnmraw with version 6.2.8.0.

Re: Poor quality ps -> jpeg conversion with newer imagemagic

Posted: 2010-02-09T11:13:02-07:00
by magick
Try this
  • convert -density 400 ke.ps.eps -resize 25% -rotate 90 -flatten ke.png

Re: Poor quality ps -> jpeg conversion with newer imagemagic

Posted: 2010-02-09T11:22:21-07:00
by opoplawski
A reasonable work around I suppose, but still not sure why the behavior changed in the first place.