[gdal-dev] gdalwarp vs gdal_translate for resizing images

[Travis Kirstine]

I've been looking at resampling high resolution orthophoto images (0.10m)
using gdalwarp vs gdal_translate to a lower resolution

gdalwarp  -co TILED=YES -srcnodata "0 0 0" -dstnodata "0 0 0" -tr 2 2   -r
bilinear in.tif warp_2m_bilinear.tif

compared to

gdal_translate -co TILED=YES -a_nodata 0 -tr 2 2  -r bilinear input.tif
translate_2m_bilinear


It appears to me that gdal_translate produces a much "better" result with
reduced aliasing.  Why would the results differ?
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