Dennis, https://www.digitalglobe.com/sites/default/files/ISD_External.pdf indeed confirms your findings (page 37 & 38, doc of originX and ulX)
Fixed per http://trac.osgeo.org/gdal/ticket/5961 Even > 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 > -- Spatialys - Geospatial professional services http://www.spatialys.com _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
