With GDAL 3.3, you could add -oo OVERVIEW_LEVEL=NONE. See
https://gdal.org/api/raster_c_api.html?highlight=overview_level#_CPPv410GDALOpenExPKcjPPCKcPPCKcPPCKc
Le 28/05/2021 à 15:56, Jon Morris a écrit :
Hello all,
One of our users reported a difference in outputs after we upgraded
from GDAL 2.2 to 3.2. Our tool is using gdal_translate to resample a
raster from 5m to 10m and the outputs are very different.
I'm ok with things changing between major versions, but when
investigating, I found that the outputs also change depending on
whether the input file has overviews. I was aware of the issue with
gdalwarp where overviews are used as a shortcut
(http://erouault.blogspot.com/2014/10/warping-overviews-and-warped-overviews.html
<http://erouault.blogspot.com/2014/10/warping-overviews-and-warped-overviews.html>),
but haven't been able to find anything similar in the docs or the code
when it comes to gdal_translate.
Should overviews make a difference? Is there any way to disable this
behaviour, so the resampling is always done using the input raster and
not the overviews?
Thanks,
Jon
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