> Upsampling is well > covered: cubicspline and lanczos are reasonably sophisticated upsampling > filters,
Did you actually try them for downsampling ? They are for sure widely used in that case already, for example when using gdaladdo to create overviews. For example cubicspline has a filter radius of 2. If you downsample by a factor of X, the effective radius will be 2 X. -- Spatialys - Geospatial professional services http://www.spatialys.com _______________________________________________ gdal-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/gdal-dev
