I have high resolution imagery data stored as Worldwind cache and would like
to serve them with Geoserver WMS. The tiles are not georeferenced in an
usual manner, the
georeferencing is done by naming conventions and the directory
structure. They are arranged into folders by data set name, zoom level,
rows,
then column_row.xxx. The tile size is 512x512. Here is the link that
describes Worldwind's cache structure:
http://issues.worldwind.arc.nasa.gov/confluence/download/attachments/394/world+wind+tile+systemt.gif
I saw this old thread on the internet about this topic but I don't really
understand how to do it:
http://comments.gmane.org/gmane.comp.gis.geoserver.user/21810
Here are my questions:
1. How do I get the information for the World file from the JPEG? One way I
know is to use gdal_translate to convert JPEG to GeoTiff and use listgeo to
generate the *.tfw file. But why do I still need the World file when I
already have the geo-reference file?
2. Assuming that I got the Worldfile for each JPEG file, how do I re-arrange
the Worldwind's pyramid structure correspoinding to the output of
gdal_retile.py? Do I need to do that? Can Geoserver handle WorldWind's
tile structure?
Any ideas on this is greatly appreciated.
Regards,
Tam
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