[postgis-users] Posgist raster overviews created with bicubic resampling

Bborie Park bkpark at ucdavis.edu
Wed Nov 28 07:38:51 PST 2012

Ticket #2113 added.


I'll see about getting to this before PostGIS 2.1 is released.

On Wed, Nov 28, 2012 at 2:53 AM, daigu <davor.racic at gmail.com> wrote:
> I suppose i would have to resample union of 4 tiles, each one 512x512 dpi,
> and then insert the new tile of dpi 512x512 into the overview table. This
> would be easy if i have one single raster, but i have multiple rasters
> divided into multiple tiles. Rasters are same size and aligned, but the
> mosaic of all rasters is irregularly shaped. I could use bounding boxes of
> existing overviews, and then take intersection of higher resolution raster
> and bounding box of lower resolution overview, and then resample it to
> 512x512. This all looks very complicated to me...
> I'm stuck here...
> This would be a very useful feature for future versions of raster2pgsql.
> Overviews of aerial photos don't look good created this way.
> --
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Bborie Park
Center for Vectorborne Diseases
UC Davis
bkpark at ucdavis.edu

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