[Poppler-bugs] [Bug 88971] New: [PATCH] Add a pdftops -preservecolorspace option to suppress optimization to DeviceRGB color space

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88971

            Bug ID: 88971
           Summary: [PATCH] Add a pdftops -preservecolorspace option to
                    suppress optimization to DeviceRGB color space
           Product: poppler
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: utils
          Assignee: poppler-bugs at lists.freedesktop.org
          Reporter: williambader at hotmail.com

Created attachment 113166
  --> https://bugs.freedesktop.org/attachment.cgi?id=113166&action=edit
Patches to add -preservecolorspace

pdftops 0.17.2 in August 2011 added an optimization to convert RGB and CMYK
bitmaps with equal components in every pixel into Gray bitmaps.
This fixes problems where PDFs with embedded RGB images would not work well
when separated into CMYK plates for printing.
There are times when it is better to leave gray images encoded as RGB as RGB. 
See for example, the image
https://www.dropbox.com/s/yoj6h3o4irnlgun/source.pdf?dl=0
The attached patches add a -preservecolorspace to preserve gray images encoded
as RGB as RGB.

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