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Messages - wizzed

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1
Wiimote Finger Tracking / Re: 3d finger tracking setup
« on: July 07, 2009, 04:53:56 PM »
Turning the wiimotes in slightly meant that I was able to pick up the point on both wiimotes imultaneously but in a very small area, probably a few inches left and right.
Ah, misunderstanding here by the way: i intend to have them positioned so that angle between their viewing directions is >=45 and <=90
I want to use the wiimotes relative position (aquired through calibration) for the 3d finger tracking.

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Wiimote Finger Tracking / Re: 3d finger tracking setup
« on: July 07, 2009, 03:02:47 PM »
I guess the problem is mainly with the reflective material, but higher dispersion would also lead to a lower intensity.

I found and ordered an ir illuminator with 80 illumination angle and will simply test it with that.
Worst case scenario is i have to order one more.

Thanks for trying out :)

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But on Johnny's video I see more than 4 points on the screen.
As far as i understand it from reading around, the wiimote can only detect 4 blobs at a time (i.e. frame).
If, however, the intensities are not sufficiently distinct you have no guarantee that you get the same 4 blobs in two consecutive frame.

HTH,
wizzed

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Wiimote Finger Tracking / Re: 3d finger tracking setup
« on: July 06, 2009, 05:41:55 PM »
Thanks for the quick answer.
130 leds for 2 meters is not as efficient as i hoped :|

I thought about a simplified setup which i can put into my workspace.
I also want 3 axes, so i thought 2 arbitrarily placed wiimotes and a software-side calibration process would be the easiest.

Here is a schema to clarify what i mean:


edit: changed schema slightly to avoid misunderstandings

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Wiimote Finger Tracking / 3d finger tracking setup
« on: July 06, 2009, 05:15:50 PM »
Hi,

would it be sufficient for simple 3d tracking of (up to 4) fingers to put one led-array in the middle and 2 wiimotes placed aside (with some distance)?

Also i can't yet see how many leds would approximately be needed.

Thanks,
wizzed

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