[gdal-dev] EarthWatch/DigitalGlobe .TIL format geotransform origin shifted

[Dennis Gocke]

Hey guys,



We have DigitalGlobe image strips which come with a *.til file.

The geotransform of the til and the separate images have a shift of half a
pixel when opened with GDAL.

The reason is that in the GDAL TIL driver the coordinates are treated as
outer pixel edge, where as it seems like they describe the pixel center, at
least in our cases.

Does  anyone know of a description for the TIL format to verify if the GDAL
driver or the TILs from DigitalGlobe are wrong?

For now we fixed it on our side, but you might consider changing the TIL
driver to treat the coordinates as pixel center.



Best Regards,

Dennis
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