Author Topic: Low cost motion capture ?  (Read 7019 times)

Offline proffy

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on: January 13, 2008, 09:53:36 AM
hi,
i'm benjamin, and i'm studying 3d animation in france (aries).
i worked with vicon mocap system, and when i saw your videos, and i tested the tricks succefully at my home, i immediatly did the parallel with mocap and started to think about a way to do fun things with that

i read the "6 points head tracking" post, and even if Johnny Lee's others (amazing) works (especially the "automatic display calibration" and "foldable displays") show that you're able to distinguish the point in a pseudo-3d environment (what point corresponds to what part of the object, in the car project for instance), i think one wiimote can't be sufficient to get a good tracking of an object. (hiddent points,

so here are the points:
- what about taking 2 or 3 wiimote, and calibrate the position of the wiimotes (with a 4 IR object, to set the X, Y, Z direction and origin point) to re-create a 3d space ? at least for simple geometric objects for the moment


i don't know how difficult it is, and if it's even possible to imaginate something like that, but since i saw Johnny showing me that i can do with 15 what i could do with a 3000 Wacom Cintiq pen tablet, why not 45 instead of 50000 ?


here is the link of "calibration tools" used in vicon mocap systems:
http://www.cacs.louisiana.edu/labs/ecrg/vicon/calopen.png

i hope my english is comprehensible enough
Good luck for the future

Benji

« Last Edit: January 14, 2008, 02:26:12 AM by proffy »



Offline sahamali

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Reply #1 on: January 17, 2008, 03:13:01 PM
Hi My name is Saham

I am the Director of IT Orlando, Florida at The DAVE School we have a 24 camera Vicon system that sony donated to us after the Polar Express feature.

We have been using it lately more than ever.

I have stumbled upon a Johnny lee's use of the wii remote and am very interested in making this remote track Eyes so we can mocap eyes, I like the concept you have i think it is very doable and if any one wants to tackle it let me know cause the applications are endless.  the biggest thing i would be looking forward to is to be able to do motion capture but of the face, facial mocap is hot right now and we dont want to touch our vicon, to risky, so alternative methods are always welcome.



Offline mhou

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Reply #2 on: March 11, 2008, 03:38:08 PM
Hi,

My name is Michael and I am from the University of Victoria. I have this idea of motion capture idea as well before I come to this website. I will be working on this idea as one of my class' final project on the Software Engineering Course. I will post the progress fo this in the future.

Michael
[email protected]



Offline sjeh

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Reply #3 on: March 12, 2008, 06:37:56 PM
We've been working on this idea recently, and you may be interested in a short video we've put together demonstrating full 3D motion capture using two Wii controllers.

http://www.youtube.com/watch?v=CT6aQN-lwmo

The accuracy is surprisingly good for such an inexpensive system!



Offline guiguito

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Reply #4 on: March 13, 2008, 05:05:07 AM
awesome. I was planning to do this soon, but in java !! that's why i worked  before on wiiusej before trying to do it ....


Nice stuff :D i may try to do it though :D

any website to have more details on this project ?



Offline guiguito

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Reply #5 on: March 13, 2008, 05:22:05 AM
i'd like to get details oon the maths behind, because i can't quickly figure out how you do your calibration part ...

any website or report  ? (pdf doc ...)