Re: [gdal-dev] Re: Artifacts when presenting WMS based on a number of adjoining vrt files with overviews

2010-08-24 Thread jonas nielsen
iew of the entire dataset at the top level, to reduce file-access and achieve good performance. -Jonas On Tue, Aug 24, 2010 at 9:43 AM, Jukka Rahkonen wrote: > jonas nielsen gmail.com> writes: > > > > > > > The original images that the overviews are built on are 1 by

Re: [gdal-dev] Re: Artifacts when presenting WMS based on a number of adjoining vrt files with overviews

2010-08-23 Thread jonas nielsen
The original images that the overviews are built on are 1 by 1 pixels. And yes, the artifacts appear without reprojection. -Jonas On Mon, Aug 23, 2010 at 6:24 PM, Jukka Rahkonen wrote: > jonas nielsen gmail.com> writes: > > > > > > > Help would &

[gdal-dev] Artifacts when presenting WMS based on a number of adjoining vrt files with overviews

2010-08-23 Thread jonas nielsen
Hi List, Help would be sincerely appreciated: We are seeing artifacts when presenting WMS images based on a number of adjoining .vrt files with overviews. Background. We are processing 47.000 files containing aerial photos of 1 km by 1 km each, at a resolution of 10 cm by 10 cm. These are t