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Author Topic: Wiimote Camera Angles  (Read 2418 times)
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eyucel
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« on: January 16, 2009, 08:55:48 AM »
Hi,

I made some experiments to figure out the wiimote camera angles. They are vertical 30 degrees, horizontal 40 degrees.
The camera sees a 112*82 rectangular area from a 150 cm away and the wiimote is horizontal to the ground.
                            a 172*132  rectangular area from a 240 cm away.

I hope this helps.

Take care
« Last Edit: January 16, 2009, 09:24:30 AM by eyucel » Logged
eyucel
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« Reply #1 on: January 16, 2009, 09:23:46 AM »
In order to decide  how far you have to put the wiimote from the screen, one needs the following formula.
x=((the screen size-horizontal)/2)/tan(radians(20))
x=((the screen size-vertical)/2)/tan(radians(15))

An example;
The screen size horizontal is 130 cm. The result of tan(radians(20))=0.36397

x= (130/2)/0.36397=178.50 cm.

But, if the screen size vertical is also 130 cm, then x=((the screen size-vertical)/2)/tan(radians(15))

 tan(radians(15))=0.267949

x= (130/2)/0.267949=242.50 cm.

These are approximate distances, but very close to the true numbers.
« Last Edit: February 11, 2009, 06:15:07 AM by eyucel » Logged
Wiweeyum
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« Reply #2 on: January 16, 2009, 02:00:45 PM »
Oh nice, I applaud your numbers.

Though you've got a few typos in you post. In your examples you multiply the 0.36397 instead of correctly dividing.
« Last Edit: January 16, 2009, 02:07:43 PM by Wiweeyum » Logged

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benpaddlejones
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« Reply #3 on: January 16, 2009, 08:28:36 PM »
eyucel
Great work!
Supports sts70nl previous work http://www.wiimoteproject.com/wiimote-whiteboard/first-trial-ideal-distance-wiimote-andlt-andgt-size-screen/msg4441/#msg4441 who produced similar figures.

Its good to know that if you want to use a Wide Screen just lay the Wiimote on its side!

benpaddlejones Smiley
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bubka
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« Reply #4 on: February 04, 2009, 08:41:30 PM »
mine is ceiling mounted almost parallel with the LCD projection
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