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  1. Qt
  2. QTBUG-68609

libqtiff image plugin does not set RowsPerStrip tag

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Details

    • Bug
    • Resolution: Done
    • P2: Important
    • 5.11.1
    • 5.5.0
    • Image formats
    • None

    Description

      The TIFF plugin generates images without the RowsPerStrip tag defined. This causes read issues with most TIFF readers in the willd, in particular when the LZW compression is enabled: see https://issues.qgis.org/issues/18274

      A reasonable solution is to create stripped image by using the chunk height that is used to compress the data.

      The attached patch implements that

      Attachments

        1. new.tiff
          361 kB
          andreas.loew
        2. old.tiff
          233 kB
          andreas.loew
        3. tiff_rowsperstrip.patch
          6 kB
          Even Rouault

        Issue Links

          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-70820 TIFF file size increase (+50%)

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Activity

            People

              vgt Eirik Aavitsland
              rouault Even Rouault
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              Dates

                Created:
                Updated:
                Resolved: