2017.08.30 16:07 "[Tiff] problems saving BigTIFF format", by Paul Hemmer

2017.08.30 16:37 "Re: [Tiff] problems saving BigTIFF format", by Bob Friesenhahn

Is anything other than specifying "w8" in TIFFOpen() required to successfully create a BigTIFF file?

When my dataset is < 4GB and I open with "w" and write the data, I can view the image just fine.

When it is > 4GB and I use "w8" to open, all else the same, then the resulting file cannot be opened by any of the image viewers I can find that are said to support BigTIFF (IMARIS, Nikon Elements, FIJI/BioFormats, and VeryLargeImageViewer)

I don't know anything about those programs. Have you tried GraphicsMagick built against libtiff 4.XX?

   % gm convert input.png bigtiff:output.tiff
   % gm identify output.tiff
   output.tiff BIGTIFF 914x610+0+0 DirectClass 8-bit 57.9Ki 0.000u 0m:0.000001s
   % gm convert output.tiff output.jpg

Bob
--
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/