That works, thank you ! -- oyvind
On Mon, Apr 2, 2012 at 3:57 PM, Saâd HESSANE <[email protected]> wrote: > ---------- Forwarded message ---------- > From: Saâd HESSANE <[email protected]> > Date: Mon, 2 Apr 2012 15:56:27 +0200 > Subject: Re: [gdal-dev] Most optimal way of using tiles ? > To: Oyvind Idland <[email protected]> > > Hy, > > you can use "gdaladdo --config COMPRESS_OVERVIEW [DEFLATE | JPEG]" to > create compressed overview. > And then you can use gdalbuildvrt or gdaltindex to build an index of the > files. > > 2012/4/2, Oyvind Idland <[email protected]>: > > Hello, > > > > I got a huge dataset consisting of about 100 uncompressed TIFF's, each > with > > size 12599 X 9449 pixels with RGB bands. > > Note, that the TIFF's are not georef'ed, instead there are .tfw's > following > > each file. Also, since they are about 350 MB each, > > I guess converting them to a compressed format could speed things up > (I/O). > > > > The "normal" approach would probably be to make a VRT dataset, and build > > overviews. However, building a an > > overview based on the entire VRT index seems a bit heavy in this case. > > > > Is it possible in some way to create compressed overviews (using > gdaladdo) > > for each file, and > > then build a VRT based on these ? Will the VRT dataset utilize the > > generated overviews ? > > > > > > - oyvind > > > _______________________________________________ > gdal-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/gdal-dev >
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