[gs-bugs] [Bug 692265] New: Colors distorted when breaking up a PDF into images

[bugzilla-daemon at ghostscript.com]

http://bugs.ghostscript.com/show_bug.cgi?id=692265

           Summary: Colors distorted when breaking up a PDF into images
           Product: Ghostscript
           Version: 9.02
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P4
         Component: Color
        AssignedTo: michael.vrhel at artifex.com
        ReportedBy: bhapca at gmail.com
         QAContact: gs-bugs at ghostscript.com
   Estimated Hours: 0.0


Created an attachment (id=7578)
 --> (http://bugs.ghostscript.com/attachment.cgi?id=7578)
the PDF that fails

When using ghostscript to break up the attached PDF into PNG images,
corresponding to each page, the colors on the cover page get distorted.

This seems to be a regression bug, as it works fine in version 8.71, but fails
in 9.02.

I'm using the following switches when invoking gs:

$cmd = GS_BINARY_PATH." -dSAFER -dBATCH -dNOPAUSE -sDEVICE=png16m
-dTextAlphaBits=4  -dGraphicsAlphaBits=4 -dUseCropBox
-sOutputFile=$folderBase/full/image-%d.png -r100  $folderBase/pub.pdf";

Tested on both MacOS and CentOS, with the same result.

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