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  1. Qt
  2. QTBUG-68609

libqtiff image plugin does not set RowsPerStrip tag

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

      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

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