I know this is an old thread, but I wanted to share my findings in the hope that others might find it useful. I've been trying to find a way to create models from a subset of ContextCapture tiles, and I need to convert the ENU extents to geodetic, so I can clip the appropriate area from the ortho imagery (which is EPSG:4326, or WGS84) so they match. After a little digging, I found an algorithm for converting ENU to a number of other coordinate systems. You can find it here: https://github.com/ethz-asl/geodetic_utils Apparently, the ContextCapture definition of ENU matches this package's description, which can also be found here: http://www.dirsig.org/docs/new/coordinates.html
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