Saturday, March 24, 2007

Dstile and Imagery Drag Drop


Some may think Super Overlays are cool, but you can do the same in World Wind by just dragging and dropping georeferenced imagery. The tiles are built using the windows version of the same tool that tiles the imagery on the server. A simple front end figures out what options you will need to add the imagery and produces a corresponding xml. The tiling takes some time to build to full resolution, and reproject.

For instant gratification I am considering doing a quick thumbnail of the reprojected image and loading it as an Overlay. This will also allow georeferencing by hand of ungeoreferenced imagery.

Most of the heavy lifting is done by the GDAL C++ API which are used in Dstile. I am planning a migration to the C# bindings as they mature.
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