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Antialiasing of vector graphics broken for PDFs with PNG24 transparency


From: Ben Dilts
Subject: Antialiasing of vector graphics broken for PDFs with PNG24 transparency embedded
Date: Wed, 08 Dec 2010 15:48:06 -0000
User-agent: G2/1.0

I run the following command on the input PDF found at 
http://bendilts.com/bad.pdf

 gs -dNOPAUSE -dBATCH -sDEVICE=png16m -r300 -sOutputFile=bad.png
bad.pdf

The output can be found at http://bendilts.com/bad.png

The text and vector graphics in the output are not antialiased in this
output whatsoever.  If I remove the image from the PDF, the
antialiasing works perfectly (with an identical gs command).

Any idea what could be going on here?


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