[I'm writing again, as Google Groups _might_ have eaten my first message] Hi,
I need to reproject some rasters from one UTM zone to a neighbouring one. I'm using otb::GenericRSResampleImageFilter and it works, but it's 15-18x slower than gdalwarp. Perf shows that most of the time is spent converting coordinates: 43.36% libm-2.17.so [.] __sin_avx 20.70% libossim.so.1.8.19 [.] ossimUtmProjection::Convert_Transverse_Mercator_To_Geodetic 6.66% libm-2.17.so [.] __ieee754_pow_sse2 6.35% libossim.so.1.8.19 [.] ossimUtmProjection::Convert_Geodetic_To_Transverse_Mercator 3.08% libm-2.17.so [.] __exp1 2.87% libm-2.17.so [.] __tan_avx 2.34% libm-2.17.so [.] __cos_avx 2.00% libm-2.17.so [.] __sincos 1.61% libc-2.17.so [.] _int_free 1.52% libc-2.17.so [.] malloc 1.30% libossim.so.1.8.19 [.] ossimDatum::operator== I'm now using a deformation grid spacing equal to the output spacing. Increasing it 10 times makes the execution twice as fast as gdalwarp. I don't know how much it affects the quality, though. Does anyone know how gdalwarp might work? Regards, Laurentiu -- -- Check the OTB FAQ at http://www.orfeo-toolbox.org/FAQ.html You received this message because you are subscribed to the Google Groups "otb-users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/otb-users?hl=en --- You received this message because you are subscribed to the Google Groups "otb-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
