Hi,
The GDAL Color Interpretation enumeration is a good start, but is quite
limited regarding band spectral properties with just Red, Green, Bland,
and nothing for other band wavelengths, particularly for infra-red.
I was looking a bit at the classifications at
https://en.wikipedia.org/wiki/Infrared#Regions , and there are several
ones, like the "commonly used subdivision scheme" (NIR, SWIR, MWIR,
LWIR, FIR) or "CIE division scheme" (IR-A, IR-B, IR-C) or "ISO 20743
scheme" (NIR, MIR, FIR).
My inclination would rather to re-use the STAC EO classification at
https://github.com/stac-extensions/eo?tab=readme-ov-file#common-band-names,
which shows a lot of similarities with
https://github.com/awesome-spectral-indices/awesome-spectral-indices#expressions
, and has a nice mapping with a few popular instruments.
While we are it, should we standardize central wavelength and full width
half max (FWHM), has special properties of a bands rather than generic
text-based metadata, like:
double GDALRasterBand::GetCentralWaveLengthMicrometer() -> NaN if unknown
double GDALRasterBand::GetFWHMMicrometer() -> NaN if unknown
void GDALRasterBand::SetCentralWaveLengthMicrometer(double)
void GDALRasterBand::SetFWHMMicrometer(double)
Or maybe just standardize a "CENTRAL_WAVELENGTH" and "FWHM" metadata
items in the "IMAGERY" metadata domain:
https://gdal.org/en/latest/user/raster_data_model.html#imagery-domain-remote-sensing
?
Thoughts?
Even
--
http://www.spatialys.com
My software is free, but my time generally not.
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