WiiLi.org

[Faucet]

I work for the FSU Film School's VFX department and we have a project coming up that will require a ridiculous amount of camera tracking. I was thinking it may be possible to utilize the cheap and totally awesome abilities of Wiimotes to track the camera.

Some questions:

After some research I don't know if the accelerometers will be accurate enough to track the sometimes subtle camera movements that may take place. Should I even consider trying it?


I read on Wiibrew that Wiimotes have an IR camera that can track up to 4 points at once. I was thinking of setting 4 infrared LEDs on the camera and setting 2 Wiimotes looking at the camera to give a stereoscopic view of the points. What's the frequency of the IR camera and do you think it would be accurate enough? Has anyone worked with more than 2 IR points?


Any sites other than WiiLi and Wiibrew I should be looking at?


Thanks for your time.
_________________
-Derick
(brainfaucet.com)

[mikey]

each IR point is just sent as a coordinate in the HID report. from one to four points.

[TiagoTiago]

I believe if you know the 3d position of the 4 ir dots on the moving object and they are visible to the wiimote all the time you only need one wiimotew and lots of math to get the position (and angle) of the camera

edit: idealy I believe you would have the 4 ir emiters placed in such a disposition that the software can firgure out without doubts which dot is which marker simply by calculating all the valid "views" of the 3dimensional pattern

[mikey]

you can make each dot unique by making some dots brighter than others. there is a size value returned along with the position of each dot.

[TiagoTiago]