Mixed reality - moving object, moving camera

Done some math to simulate correct rotation.
Every complete rotation is a translation of 3.14 ball diameters on x axis... not so easy to implement.
First test with full motion for object (rotation & translation) and camera.


Some explanations (what follows is a replay to a comment/question by a youtube user, concerning tracking issues and ball movement):

1) About fiducial markers: some objects are always visible, for example the wall segment on the foreground; moreover, general geometry of the environment is simple, being essentially orthogonal; moreover, tiles on the groundplane are useful, every persistent joint is a fiducial marker... so I can reconstruct 3D data I need starting from incomplete tracking data.

2) About object (the ball) speed: once completed tracking process, I got in Blender a 3D cloud of points, some helpful, some only being "noise" (in computational terms). Then i modeled a simple plane matching the top of the main wall (this isn't a mechanical task, however); so I got a complete 3d environment for my animation: view angle is not important in this stage.

Then I simply made the ball move (and rotate) with constant speed on my simple plane. This done, I used tracked camera data to animate the 3d scene in a way that matched the scene foreground, that is the filmed footage.

Category:

Film & Animation

Tags:

• VR
• augmented
• reality
• blender
• icarus
• compositing

[SelfEmployedAssassin]

Am I mistaken or isn't this called 'Augmented Reality'?

[roomk]

Uhm, it would be "augmented" if the synthetic object was a representation of an otherwise invisible (albeit real) phenomenon; this is "mixed" because the ball doesnt'exist!

[anim8ordude]

Track? Perfect.

Render? Needs work. The lighting seemed unrealistic. Did you render it with a raytracing renderer? The lighting on the ball wasn't bright enough and the shadows weren't dark enough. Apart from that, fantastic job.

[roomk]

thanks for your detailed comment!

Render wasn't the object of my experiment, I was interested in a good tracking and in the simulation ("mimic" is more appropriate) of the rotation of the ball. This is why I chose a stripped texture and a simple raytrace for the render ;-)

[roomk]

...common logics?

what's that?

:-)

[Kortail]

Nice, good work. Try and make a photorelistic renderning next time that would be awesome !

[roomk]

Yeah, that would be the mandatory next step :-)

Thanks for commenting!

[2RandomStudios]

This is a nice effort, but the frame rate is horrible -_-

[mikeyrt16]

Its blatently a real ball.

[PixelThink]

buenichimo amigacho

[Rollersteaam]

Wow what the fuck... am I tripping?!

[wightknight121]

obviose what your tracking

[RickRay9]

Wow, it looks like a game called Myst, you should try it out, it's a classic.

[alanpgoodwin]

Very nice, precise track. The lighting and resolution of the ball could use some work though. I'd use an angular map of the video footage itself as indirect lighting for realism. Making the ball bounce over the gap in the wall would give it more realism too.

[alexneskin]

really cool cam tracking