I'm trying to convert pixel coordinates of a TIFF file into longitude and latitude ones. The image is from a grib product of a geostationary satellite and I want to georeference it.
I'm reading this doc http://2014.cgms-info.org/documents/cgms-lrit-hrit-global-specification-%28v2-8-of-30-oct-2013%29.pdf - Section 4.4, page 29.
Formula in page 29 returns small values from 0.0 to about 1.6. They are the so called "intermediate values", now I need to scale it. In page 32 there is the scaling function for that, but I don't know the coefficients declared in that...
Does someone know the correct way?