POV-Ray : Newsgroups : povray.macintosh : [Q] POV-Ray in command line : Re: [Q] POV-Ray in command line Server Time
29 May 2024 08:46:23 EDT (-0400)
  Re: [Q] POV-Ray in command line  
From: Francois LE COAT
Date: 30 May 2021 11:00:01
Message: <60b3a871$1@news.povray.org>

>> Bald Eagle writes:
>>> Francois LE COAT wrote:
>>>> I've completed the WEB page I mentioned. This image processing is
>>>> applied to a drone flying in Vosges a few days ago. I was thinking 
>>>> about
>>>> to apply the same computations with the flight of Ingenuity on Mars.
>>>> <https://en.wikipedia.org/wiki/Mars_Helicopter_Ingenuity>
>>> Nice.
>>> I modeled a drone propeller like that ... 7 years ago?
>>> <http://news.povray.org/povray.binaries.images/attachment/%3Cweb.53dd
>> Great =)
>> The goal is modelling the trajectory and the visible relief with a
>> simple video, using the images from Ingenuity's camera, like in :
>> <https://hebergement.universite-paris-saclay.fr/lecoat/demoweb/tempora
>> the video is <https://www.youtube.com/watch?v=MzWu7zwdJSk> Do you
>> remember that we talked about translate <Tx,Ty,Tz>, rotate
>> <Rx,Ry,Rz> and shear (or skew) angles <Sx,Sy,0> for the camera ?
>> Then we can deduce the trajectory, and the monocular depth.
>> You'll see what it gives on Mars, if you haven't seen it in a
>> forest, with a drone, in winter ... This is spectacular :-)
> I recently worked a little further on the trajectory of the drone...

> Instead of using uniquely Ry (yaw) and Tz (translation), I also used
> Tx (translation) and Rz (roll) to reconstruct the trajectory. I couldn'
> use Ty (translation) and Rx (pitch) because it is not looking like a
> valid camera displacement. I have no real explanation.
> But the aspect of the drone's trajectory is looking better ...

I worked on the sixth flight of the "Ingenuity" helicopter on Mars...


Unfortunately, there was an incident with the dated flight information
and the video sources from the NASA aren't so good for processing :-(
I wish we will have a color video, from the second embedded camera :-)

Thanks for your help.

Best regards,



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