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**Project Ideas / Re: get the 3D coordinates to localize target for medical imaging using wiimote**

« **on:**January 22, 2009, 03:56:09 AM »

Hi,

I've been looking at is as well, this is what I came up with.

3D tracking with 1 Wiimote

Yes it is possible but you need 3 or better 4 IR points in a known configuration. See this rather hefty math article to get an idea: www.infoweb.drake.edu/mathcs/rieck/wii.pdf .

3D tracking with 2 Wiimotes

This is easier, at least the math is .

You place 2 Wiimotes on the same line (base of a triangle is will form) at a known angle from this line. Remember the angle that the Wiimotes can see if about 40 degrees.

Then you use the X coordinate of both Wiimotes to determine the angle from the baseline.

Then you use triangulation to calculate the location of the point in the XY plane (the plane parallel to the floor). You can use the Y to do the Z.

Marco

I've been looking at is as well, this is what I came up with.

3D tracking with 1 Wiimote

Yes it is possible but you need 3 or better 4 IR points in a known configuration. See this rather hefty math article to get an idea: www.infoweb.drake.edu/mathcs/rieck/wii.pdf .

3D tracking with 2 Wiimotes

This is easier, at least the math is .

You place 2 Wiimotes on the same line (base of a triangle is will form) at a known angle from this line. Remember the angle that the Wiimotes can see if about 40 degrees.

Then you use the X coordinate of both Wiimotes to determine the angle from the baseline.

Then you use triangulation to calculate the location of the point in the XY plane (the plane parallel to the floor). You can use the Y to do the Z.

Marco