Extracting the raw sensor data

[lucca10]

Hey, im making a research that requires extracting the temperatures in each pixel of a flir thermal photo.

Im using exiftool to extract the rawthermalimage with "exiftool -RawThermalImage -b <input path> > <output path>".

In order to transform the sensor data into temperatures im planning on using the formulas described in https://github.com/gtatters/Thermimage/blob/master/R/raw2temp.R, but as i read there and in the "Raw Value Range Min" and "Raw Value Range Max" tags, the sensor data goes from 0 to 65535 (2^16) and the data I gather in <output path> is a grayscale png, in other words, the 3 RGB channels have equal values and ranges from 0 to 255 (2^8).

What am I doing wrong in order to get the sensor data? Or it do range from 0 to 255?

[Phil Harvey]

I can't help much here.  There are other forums with people that have more experience with these thermal images.

- Phil