Objective:Have a rule of thumb to quickly setup the Wiimote for use with a beamer and whiteboard.
Criteria:Consistent and very optimal tracking on a white board
AssumptionThe more angles, the more skewed and the less optimal the tracking
Setup:- no beamer (haven't got one to play around with)
- real whiteboard
- Wiimote
- Boonjin's 0.2.2 beta
- Living room (daylight)
The Wiimote has a 90 degree angle on the whiteboard, however it is slightly angled upward (see picture attached).
Procedure- Start the calibration procedure
- Trial & error to find the maximum view of the Wiimote camera
- Repeat until the maximum area is found
Results d | WT | WB | HL | HR | resolution | W:H |
104cm | 78cm | 77cm | 53cm | 47cm | 114% | 3.1:2 |
50cm | 36cm | 34cm | 25cm | 25cm | 120% | 2.8:2 |
Observations:- - width / height ratio of the Wiimote is 3:2
- - distance and height seem to have an easy ratio
HypothesisThe distance of the Wiimote to the whiteboard follows:
d = 2*HWhere (d) is the distance Wiimote to whiteboard, and (H) = projected height
QuestionIt would be very nice to get additional measurements as well to get a good rule of thumb. For instance, I couldn't use a beamer (was not required for I was looking for the maximum area) and my whiteboard isn't one of the largest so I could take only two measurements.
Stefan van Aalst