[Poppler-bugs] [Bug 20345] New: incorrect JPX foreground image rendering

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=20345

           Summary: incorrect JPX foreground image rendering
           Product: poppler
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: low
         Component: general
        AssignedTo: poppler-bugs at lists.freedesktop.org
        ReportedBy: paul at booyaka.com


Page 6 of the attached PDF is rendered incorrectly with the Xpdf-derived JPX
decoder in poppler.  When poppler is compiled with OpenJPEG support, the image
renders correctly.  Would suggest deprecating the existing JPX decoder in
poppler and recommending that all distributions use OpenJPEG.

Page 6 is a three-image composite of a reduced-resolution JPEG background
image, reduced-resolution JPEG2000 foreground image, and a full-resolution
JBIG2 image mask.  The poppler JPX decoder causes white ghosting in the
upper-right corner of the text.  (The PDF was originally generated with ABBYY
FineReader 9 in MRC mode)

Regards - Paul Walmsley and Raj Kumar
cc: Raj Kumar <rkumar at archive.org>


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