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
I’m preparing a version of my shapemodel for rendering in realtime.
Dipl. Ing. (FH) Rainer Christiansen, curator of the Mencke Planetarium in Gluecksburg, contacted me and suggested the possibility. Working under his supervision we converted the model to the E&S digistar format. This video was recorded by Rainer as part of the testing of the models performance in their Evans & Sutherland Digistar planetarium system.