[gdal-dev] Jp2 driver "unhandled projection"

[Even Rouault]

Le 09/02/2024 à 18:13, Meyer, Jesse R. (GSFC-618.0)[SCIENCE SYSTEMS AND 
APPLICATIONS INC] via gdal-dev a écrit :
>
> I noticed a warning after converting a gtiff image to jp2 stating 
> ‘Warning 6: Unhandled projection method Albers_Conic_Equal_Area’.  The 
> driver apparently completes the conversion and happily reports the 
> projection correctly under gdalinfo.  But I find it weird that the 
> format would care about the projection.  Is this a serious warning?
>
It is a bit strange that you get this warning (especially since this 
should be a projection method handled by GDAL) and get a SRS after the 
projection.

It is fully expected that the JP2OpenJPEG driver tries to get 
georeferencing from the metadata. There are several ways to embed 
georeferencing in a JPEG2000 image : GeoJP2, GMLJP2. All 
JPEG2000-capable drivers in GDAL share the same code to read that 
georeferencing when present and expose it.

Any link to that JP2 image? (sometimes images have both GeoJP2 and 
GMLJP2, or possibly a side-car file. I'm wondering if the warning might 
not come from an attempt at reading with one method, and finally a 
fallback is used)

Even

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