Hi!
The wonderful caldera on Hecates Tholus summit http://themis.asu.edu/zoom-20060301a suggested me to try a photoclinometry 3D reconstruction.
Thats very good, though I dont think the left side came out entirely correct the way it slopes up there, thank you for posting though.
I would like to try this, but I don't know of any such Mac based software. In Photoshop there is an 'emboss' filter which effectively turns a grayscale DEM into a shaded relief map. Can a similar filter be designed that would reverse the process, turning a suitable image showing topography with minimal cast shadows into a rough grayscale DEM? Hand painting such things is a lot of work!
Don
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