On Tue, 10 Aug 2010 11:46:00 +0100, Martin Raspaud <martin.rasp...@smhi.se>
wrote:
We have a satellite image in black and white, which show IR brightness
temperatures. The data is scaled between 0 and 255 for viewing, and this is
packed in a geotiff file
Now some users would like to have the true value of the brightness temperature
embedded in the file also.
Maybe you can simulate something close by putting a scale and offset (slope
and intercept) into the geotiff so you still display 8-bit values but a decent
image viewer will also calculate the true values and give a pixel readout of
the true value under the cursor. I say simulate because 8 bits may not give
sufficient resolution.
Andrew
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