[Digikam-devel] [digikam] [Bug 359608] New: Digikam does not decode 16 bit grayscale jp2.

[Ulrich Eckhardt via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=359608

            Bug ID: 359608
           Summary: Digikam does not decode 16 bit grayscale jp2.
           Product: digikam
           Version: 4.14.0
          Platform: openSUSE RPMs
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: digikam-devel at kde.org
          Reporter: kde at uli-eckhardt.de

Digikam does not decode grayscale jpeg2000 images correctly when the bit depth
is larger than 8 bits. It decodes this pictures to some strange green/white
rectangles.

You can create such jp2 images for example with imagemagic: 
convert test.tif -depth 16 -quality 80 -type grayscale test.jp2

Images converted with depth 8 will be decoded correctly:
convert test.tif -depth 8 -quality 80 -type grayscale test.jp2


Reproducible: Always

Steps to Reproduce:
1. Create an jp2 image from a 16Bit image using imagemagik: "convert test.tif
-depth 14 -quality 80 -type grayscale test.jp2"
2. View the created image as preview or try to open this created image.

Actual Results:  
Strange image with white/green boxes.

Expected Results:  
Correct display of the black and white image.

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