2011.06.24 23:57 "Re: [Tiff] 16-bit image", by Chris Cox
The min/max sample values are metadata, and don’t affect interpretation of the file data.
So even if wrong, they shouldn’t cause the symptoms described.
I do wonder if the byte order of the data might be wrong, and it’s picking up the low order bits of the image.
Chris
On 6/24/11 3:50 PM, "Leandro Bugnon" <l.bugnon@gmail.com> wrote:
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>
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 anyzero 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?