[gdal-dev] suggestion for faster overviews building

[Jukka Rahkonen]

Duarte Carreira <DCarreira <at> edia.pt> writes:


>  
> Is there a way to merge de resampled images into an .ovr? Or maybe
reference the resampled images in a vrt and have them used as overviews?

Hi,

Even Rouault helped me when I was experimenting with something like this.
You can catch the discussion from here
http://permalink.gmane.org/gmane.comp.gis.gdal.devel/31829
The zip file is also still available
http://latuviitta.org/documents/GDAL_Scale_dependent_VRT_test.zip

This is more fun than doing by hand what gdaladdo normally does because the
overviews are not subsampled but they come from totally different data.

-Jukka Rahkonen-