Le 12/05/2022 à 23:58, Simon (Vsevolod) Ilyushchenko a écrit :
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?
That would probably be more a discussion for the gdal-dev mailing list,
or perhaps even the broader COG community.
--
http://www.spatialys.com
My software is free, but my time generally not.
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