[gdal-dev] gdalwarp with gauss resampling

[Jan Hartmann]

Is it possible to use gauss resampling with gdalwarp? The current 
resampling options (cubic, bilinear etc) work very well as long as the 
pixels in input and output rasters are about the same size, but not very 
well when downsampling to a much coarser scale. Gdaladdo has gauss 
resampling, but only for overviews of an existing file. I want to 
combine many mapsheets into one large map at a much lower resolution 
using gauss resampling. Would it make sense/be possible to add gauss 
resampling to gdalwarp itself/ Alternatively, is it possible to extract 
the overviews from a gdaladdo-ed file als regular rasters?

Jan
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