[Digikam-devel] [Bug 154753] New: Add support for JPEG data precision 12

Richard K├Ârber kde at ml.shredzone.de
Fri Dec 28 13:30:04 GMT 2007

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           Summary: Add support for JPEG data precision 12
           Product: showfoto
           Version: unspecified
          Platform: Fedora RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel kde org
        ReportedBy: kde ml shredzone de

Version:            (using KDE KDE 3.5.8)
Installed from:    Fedora RPMs
OS:                Linux

Please add support for JPEG images with data precision 12.

Rationale: Plustek film scanners are bundled with a scan software called SilverFast. This software supports 48 bit color depth. Anyhow it only allows to save the full color range as a proprietary TIFF file, or as JPEG with data precision 12. (Sadly there is no SANE driver for the Plustek scanner available.)

I would like to use SilverFast to scan with the full 48 bit color depth, but do the post processing (like color correction) with showFoto due to its superior algorithms.

I can provide test images upon request.

Medical pictures also seem to use data precision 12, e.g. for xray images.

This bug is somewhat related to bug 112801, but there it was only asked to ignore images with data precision 12.

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