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Mission: Hayabusa 2
Hungry4info
post Jul 10 2018, 08:36 PM
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I took the 3D stereo gifs, split out frames and extracted colour channels to get regular images, then re-made the rotation animation.

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-- Hungry4info (Sirius_Alpha)
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Sean
post Jul 10 2018, 09:26 PM
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Nice work.

Looks more & more like a Ferrero Rocher.


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Roman Tkachenko
post Jul 11 2018, 04:21 AM
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Here is my shape model of Ryugu. It's not perfect, but it's better than nothing
https://www.youtube.com/watch?v=7-7xg4XAcIk


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mcmcmc
post Jul 11 2018, 07:10 AM
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QUOTE (Roman Tkachenko @ Jul 11 2018, 04:21 AM) *
Here is my shape model of Ryugu. It's not perfect, but it's better than nothing
https://www.youtube.com/watch?v=7-7xg4XAcIk

I was just going to do that. Which stereophotogrammetry program did you use? I know Regard3d and 3DFZephyr (both free).

Would you mind publishing the model on http://www.sketchfab.com and making it downloadable?
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charborob
post Jul 11 2018, 11:46 AM
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Two images taken from 20 km away here.
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Therion
post Jul 11 2018, 10:20 PM
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QUOTE (Roman Tkachenko @ Jul 11 2018, 05:21 AM) *
Here is my shape model of Ryugu. It's not perfect, but it's better than nothing


It looks, like there are some permanently shadowed spots on that pole..
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djellison
post Jul 11 2018, 11:59 PM
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Had a go at making a 3d model myself

https://sketchfab.com/models/44876e2f0d314b...a32b0472a1eddc6

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Phil Stooke
post Jul 12 2018, 02:43 AM
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"It looks, like there are some permanently shadowed spots on that pole.. "

The poles are the least well imaged part of the asteroid at the moment, always on the limb, so don't read too much into it at the moment.

Phil


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... because the Solar System ain't gonna map itself.
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mcmcmc
post Jul 12 2018, 06:32 AM
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How did you get these models? 3dF-Zephyr is able to properly place just 4 images out of 30, and Regard3d ends with an inside-out model (looks like a hourglass!)
How do you calibrate images which do not have calibration data inside?
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mcmcmc
post Jul 12 2018, 06:50 AM
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Official models (not downloadable):
http://www.hayabusa2.jaxa.jp/topics/20180711bje/index_e.html
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djellison
post Jul 12 2018, 01:50 PM
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I used Agisoft Photoscan, and manually added about 4 tie points to seed to the process.
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wildespace
post Jul 12 2018, 02:58 PM
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Wow, great work with 3D models.

Now to stretch the textures from the imagery, and create flyover videos ;-)


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mcmcmc
post Jul 12 2018, 04:11 PM
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Actually I don't understand why in the automtic reconstruction a so low-res texture was applied by the SW.
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djellison
post Jul 12 2018, 04:59 PM
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I'm not going to try and do another model ( and certainly there's not much point trying to texture it yet ) until we have better imagery.
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Roman Tkachenko
post Jul 12 2018, 06:02 PM
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Simulated view of a half-phase Ryugu

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