[Poppler-bugs] [Bug 93468] New: Poppler can't display transparent JPEG 2000 images

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93468

            Bug ID: 93468
           Summary: Poppler can't display transparent JPEG 2000 images
           Product: poppler
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: general
          Assignee: poppler-bugs at lists.freedesktop.org
          Reporter: psychonaut at nothingisreal.com

Created attachment 120624
  --> https://bugs.freedesktop.org/attachment.cgi?id=120624&action=edit
PDF including several test images

Poppler seems to properly decode most non-transparent JPEG 2000 images in PDFs.
 However, transparent JPEG 2000 images are distorted beyond recognition.

Attached is a PDF with five images:

1. A transparent bitmap
2. #1 converted into a transparent JPEG 2000 with OpenJPEG
3. #1 converted into a transparent JPEG 2000 with GraphicsMagick (no idea how
it does this; possibly it just invokes OpenJPEG)
4. #1 converted into a non-transparent JPEG 2000 with GraphicsMagick
5. #1 converted into a non-transparent JPEG 2000 with Jasper

All the images display fine except for the two transparent JPEG 2000s.

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