Author Topic: First trial: ideal distance Wiimote <-> size screen  (Read 14046 times)

Offline sts70nl

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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

Assumption
The 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   HRresolution    W:H
104cm      78cm      77cm      53cm     47cm       114%  3.1:2
  50cm 36cm34cm 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


Hypothesis
The distance of the Wiimote to the whiteboard follows: d = 2*H
Where (d) is the distance Wiimote to whiteboard, and (H) = projected height

Question
It 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



Offline benpaddlejones

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Reply #1 on: June 26, 2008, 04:00:32 AM
sts70nl
Awesome work!

benpaddlejones


See my full profile and links on my Google Profile: http://www.google.com/profiles/benpaddlejones


Offline UndCon

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Reply #2 on: June 26, 2008, 07:55:04 AM
excellent! great work sts70nl






Offline mystre

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Reply #3 on: March 15, 2009, 06:56:07 AM
I'm training a couple of our IT guys to set up wiimote IWB in other schools, and wanted to give them a starting point when they setup the wiimotes.  This is an image of the what I came up with.  Are these starting points fairly reasonable?