NEW SHAPEMODEL! Based on the ESA navcam bonanza.

It is time for a new shapemodel:


I have reworked it from the ground up. This time it includes a global map to further enhance its looks.

The map is devided into parts cut along the borders of the named regions designated by ESA:


I will add further enhancements as time goes by. I’m working on a ultra high resolution normalmap to bring out the very smallest details.


The texturemap is Creative Commons CC BY SA-3.0.

The polygon model is copyrighted. I believe it to be original work so if you want to use it for anything other than personal projects and education I would like you to ask me first. (I won’t bite. I just want some rudimentary control over its usage. Drop me a line: “mattias at malmer dot nu”)

Source image credits:

Rosetta Realtime view

Try my new “ROSETTA NOW!” page:


It displays a synthetic view of comet 67/P  Churyumov – Gerasimenko from the ESA Rosetta orbiter position at the current date and time. It uses my digital shapemodel rendered with a timestep of 10 minutes. A few areas are flat due to lack of data. The sun is finally starting to shine on those areas and Rosetta is currently in an orbit that makes observations possible…


360 spins for Joel Parker

I am very happy to show these 360 spins of 67P that I created for Dr. Joel Parker (PI of the ALICE instrument on Rosetta).  He used them in his Lecture: “Catching a Comet with the Rosetta Spacecraft“. It was held at the Fiske Planetarium in Boulder Colorado. I wish I could have been there to see it.

I made four versions. Two with cg dust added for illustration and two without.

The new model and its high resolution textures will be made available later on.





Just playing with the color image.

I felt that the all gray comet image left me slightly wanting. Just gray is ok. But I wanted to see what was hidden in the JPG.

I aligned the 3 channels very carefully using my shapemodel. I then carefully balanced the channels so that i could increase the saturation. I let the final result simmer in a pot of some of my image tricks that I use when I only want a pretty picture as result.

New Shapemodel!

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: