On Thu, May 12, 2022 at 2:50 PM Even Rouault <[email protected]> wrote:
> > 3. Even: yes, I'm not quite sure whether this should be handled on GDAL or > TIFF level. Other GDAL-readable format like netcdf-cf have time standards > already, but yes, geotiffs (and lately COGs = cloud-optimized geotiffs > <https://www.cogeo.org/>) are the lingua franca of our community. > Setting GDAL fields START_DATE and END_DATE indeed feels like a good > solution, so I wanted to find out how to do this properly in the hope of > creating a standard. > > It could certainly be good to have a standard for such metadata items for > TIFF that apply in the Earth Observation domain, and would be the > equivalent of netcdf-cf conventions, or maybe porting fields from STAC ( > https://stacspec.org/). Unfortunately the TIFF tag mechanism is hard to > make evolve given that it implies a registry to attribute a code for a > tag/key and an entity that takes care of doing that, which no longer > happens those past years. Hence my suggestion to have that at the GDAL > level. There's also the > https://www.awaresystems.be/imaging/tiff/tifftags/geo_metadata.html tag > used by the DGIWG community, to put XML ISO metadata in it, but that's > going into complex metadata system. > Alright - what's the next step in making these GDAL tags more official?
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