[gdal-dev] Most optimal way of using tiles ?

[Oyvind Idland]

That works, thank you !

-- oyvind

On Mon, Apr 2, 2012 at 3:57 PM, Saâd HESSANE <saad.hessane at gmail.com> wrote:

> ---------- Forwarded message ----------
> From: Saâd HESSANE <saad.hessane at gmail.com>
> Date: Mon, 2 Apr 2012 15:56:27 +0200
> Subject: Re: [gdal-dev] Most optimal way of using tiles ?
> To: Oyvind Idland <oyvind.idland at gmail.com>
>
> 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 <oyvind.idland at gmail.com>:
> > 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
> >
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