I asked COG folks on gitter and did not get any pointers either, so I think if we come up with something on the GDAL level, they will support. Let me post on gdal-dev.
On Thu, May 12, 2022 at 3:16 PM Even Rouault <[email protected]> wrote: > > 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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