[gdal-dev] Tiling aerial photos

[Paul Meems (Top-X)]

Thanks Even,

http://www.gdal.org/gdalbuildvrt.html does seems very interesting.
As I understand it, it will do the merging part (without actually merging).

But it doesn't do the tiling part, right? Or is the vrt so optimized tiling
is no longer necessary?

Thanks,

Paul


2012/7/12 Even Rouault <even.rouault at mines-paris.org>

> Selon "Paul Meems (Top-X)" <p.meems at topx-group.nl>:
>
> > Hi list,
> >
> > I have several aerial photos and I use MapWindow GIS to view them.
> > MapWindow is already using GDAL v1.8
> >
> > Instead of loading each aerial photo as an individual layer I want to
> > create a local tiles store of the photos.
> > I can then just load the tiles I need based on the scale and view. This
> > will most likely improve the performance.
> >
> > The process will be something like this:
> > 1. Get the filenames of the photos
> > 2. Merge them into one
> > 3. Create tiles
> > 4. Put the tiles in a SQLite database
> >
> > My first question: Is the above suggested process correct or should I do
> it
> > differently?
> > My second question: What GDAL functions should I look into to accomplish
> my
> > process?
>
> You could try to make a VRT from all your photos. It will be seen as a
> single
> GDAL dataset, and will take care of the burden of opening the underlying
> photos
> when needed. You can use the gdalbuildvrt utility to create the VRT from
> the
> photos.
>
> >
> > Thanks,
> >
> > Paul Meems
> > The Netherlands
> >
>
>
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