[Image-SIG] Image-SIG - Convert Tif to PNG
Jeff van Aswegen
jeffmess at gmail.com
Fri Aug 3 13:19:11 CEST 2007
I've written a script which converts around 20000 TIFF images to PNG images
everyday. The PIL module takes to long and I'm therefore using Imagemagick
to perform the conversion. My problem is I need to compress the tiff as much
as possible. The best I can do is get a 60kb TIFF Image to around a 100kb
PNG image. I can get it down an extra kb or 2 by running it through PNGCrush
but this takes way too long. The best command I can come up with is
convert img.tif -monochrome +matte -depth 8 -quality 100 img.png
-rw-r--r-- 1 jeffreyva jeffreyva 59328 2007-08-02 12:09 img.tif
jeffreyva at jeffrey:$ time convert img.tif -monochrome +matte -depth 8
-quality 100 img.png
-rw-r--r-- 1 jeffreyva jeffreyva 99340 2007-08-02 12:10 img.png
Has anyone worked with any utilities or has been successful in converting a
TIFF image to a PNG which is almost the same size as the original TIFF?
Look forward to hearing from anyone.
Jeffrey van Aswegen
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