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June 2011
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2011.06.24 22:50 "Re: 16-bit image", by Leandro Bugnon
Thanks for the quick answer. Here is a test image - http://www.filefactory.com/file/cc0b359/n/test1.tif Another thing that cannot understand is that TIFFTAG_SMINSAMPLEVALUE / TIFFTAG_SMAXSAMPLEVALUE remains in zero value but I changed that in the code. 2011/6/24 Bob Friesenhahn <bfriesen@simple.dallas.tx.us> > On Fri, 24 Jun 2011, Leandro Bugnon wrote: > > Hi, >> I'm getting a 14bit image from a CCD cam, and save it in a 16bit. The >> problem is that, if I take only 2 gray >> values (greater than zero and less than 2^14), the viewers that I try >> (imageJ and irfanview) take them as >> zero and max valuo (black and white), they don't show the real color. How >> can I fix it? I've tryed the next >> tags: >> >> The values are correctly saved, but it always show a full black and full >> white value when there isn't any >> zero or 2^16 value. >> > > I am not immediately seeing a problem with your tags. Perhaps the pixel > values are wrong, or perhaps this is a problem with these viewers. > > Are you able to post a sample TIFF file somewhere so we can download > it and see how it is constructed? > > Bob > -- > Bob Friesenhahn > bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/** > users/bfriesen/ <http://www.simplesystems.org/users/bfriesen/> > GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ -- Leandro