We are making a project where we want to do inverse 3d-projection to find the absolute position and rotation of an object in a room.
The object is supposed to have IR-diodes mounted in a specific pattern and we use the wiimote placed in the room to find these points in 2d and then do an inverse 3d-projection to get the location of the object.

We have complete software to do this...if the id of each point is known.

Therefore my question is, how well does the wiimote remember the id of the blobs?

If i light up the diodes in a specific order, will the wiimote keep track of this order?
What happens if one diode goes out of view for a short period, when it comes back will it have the same id as before?
If i pulse the diodes, to only track one at a time, is there any delay from when i shut it down or light it up until the wiimote forgets/finds it? High speed isn't really necessary, we might need the position ~5times/sec.

Hi,

Having the multiple IR dots switched on and off will result in the Wiimote to output the dots in a random order. If the IR dot does not go off (continuously detected), the order of the dots will remain unchanged.

Therefore, you will need to do additional processing to check to previous position and current position of the detected IR dots to match the IR dot to the correct position.

I have experimented before using a microcontroller to generate ID for each LED to match a specific sequence. However, due to the Wiimote's output data rate of only about 100Hz it will be quite difficult to do any real time detection.

Regards,
Boon Jin