Here is my latest shapemodel:
It is as good as I believe can be done with the current limited data-set. It is built by correlating 150 surface features over 120 navcam and OSIRIS frames. Each image has had its viewing geometry reconstructed using sparse bundle adjustment. Then a select number of images where used to derive dense depth from stereo data. To combat the noise in the stereo data I used shape from shading to create high resolution local data.
For the parts of the comet currently in darkness I have used images of the limb against the slightly brighter dust cloud to constrain the volume that the surface is inside.
I have smoothed out the “unknown” areas to make the model a bit prettier.
There are areas especially around the neck with artifacts and seams. I have not fixed them because the model is continuously made obsolete by the steady stream of new images being released.
As soon as new data becomes available I try to update the model. And I will post a new one here if there are meaningful changes to the model.
The model is Copyright Mattias Malmer CC BY SA 3.0
I would like to be credited for the creation of the model and a link to this blog would be appreciated.
Image source credits:
ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA