[gdal-dev] Tiling aerial photos

Even Rouault even.rouault at mines-paris.org
Thu Jul 12 03:31:56 PDT 2012

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

> Thanks,
> Paul Meems
> The Netherlands

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