Hi , is there any way of using the ir sensor bar with the wimote in pure data? Is it posible to track the movements of people carrying wimotes in real space with puredata?
thanks
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On Sun, 2007-10-28 at 01:12 -0700, punchik punchik wrote:
Hi , is there any way of using the ir sensor bar with the wimote in pure data?
yes, that is possible. the sensor bar is nothing else but two groups of ir-leds, that are used as a reference point in space. you couls also use a lighter (or up to four) instead. the wiimote just sends you the coordinates of the reference points' (ir-led, lighter, whatever) projection on the wiimote's intenal ir-camera.
Is it posible to track the movements of people carrying wimotes in real space with puredata?
no, that is not quite possible with the sensors, that wiimote is equipped with. it has 3 accelerometers (x, y and z), but it is very difficult (probably impossible) to calculate a position out of this data. it would be possible to calculate the position with the data from the ir-camera, but then you would need at least 3 reference points and they would have to be always visible for the cam. since the angle is quite narrow, it is probably not too suitable for position tracking.
roman
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Roman Haefeli schrieb:
On Sun, 2007-10-28 at 01:12 -0700, punchik punchik wrote:
Hi , is there any way of using the ir sensor bar with the wimote in pure data?
yes, that is possible. the sensor bar is nothing else but two groups of ir-leds, that are used as a reference point in space. you couls also use a lighter (or up to four) instead. the wiimote just sends you the coordinates of the reference points' (ir-led, lighter, whatever) projection on the wiimote's intenal ir-camera.
actually it works quite well with old-fashioned candles which are easier to handle than lighters.
gr~~~
On Sun, 2007-10-28 at 20:47 +0100, Thomas Grill wrote:
Roman Haefeli schrieb:
On Sun, 2007-10-28 at 01:12 -0700, punchik punchik wrote:
Hi , is there any way of using the ir sensor bar with the wimote in pure data?
yes, that is possible. the sensor bar is nothing else but two groups of ir-leds, that are used as a reference point in space. you couls also use a lighter (or up to four) instead. the wiimote just sends you the coordinates of the reference points' (ir-led, lighter, whatever) projection on the wiimote's intenal ir-camera.
actually it works quite well with old-fashioned candles which are easier to handle than lighters.
:-)
hehe, of course.. i think, the only reason, i mentioned lighters instead of candles, is that i used a lighter to test it...
roman
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I thought I read that the ir-leds are angled slightly outward. Perhaps the amount of light detected from each is affected by the angle, which could be used to solidify the position?
-Chuckk
On 10/28/07, Roman Haefeli reduzierer@yahoo.de wrote:
On Sun, 2007-10-28 at 01:12 -0700, punchik punchik wrote:
Hi , is there any way of using the ir sensor bar with the wimote in pure data?
yes, that is possible. the sensor bar is nothing else but two groups of ir-leds, that are used as a reference point in space. you couls also use a lighter (or up to four) instead. the wiimote just sends you the coordinates of the reference points' (ir-led, lighter, whatever) projection on the wiimote's intenal ir-camera.
Is it posible to track the movements of people carrying wimotes in real space with puredata?
no, that is not quite possible with the sensors, that wiimote is equipped with. it has 3 accelerometers (x, y and z), but it is very difficult (probably impossible) to calculate a position out of this data. it would be possible to calculate the position with the data from the ir-camera, but then you would need at least 3 reference points and they would have to be always visible for the cam. since the angle is quite narrow, it is probably not too suitable for position tracking.
roman
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Hi,
Well maybe you could fill a room with ir LEDs so that the Wiimote always has some LEDs in it's view, and then make each LED flash with a unique pattern. That way you could read the pattern being flashed by each LED to know which LED(s) the Wiimote is pointing at, and determine it's position in space from the positions of the LEDs in it's view.
Best,
Chris.
On Sun, Oct 28, 2007 at 08:36:42PM +0100, Roman Haefeli wrote:
On Sun, 2007-10-28 at 01:12 -0700, punchik punchik wrote:
Hi , is there any way of using the ir sensor bar with the wimote in pure data?
yes, that is possible. the sensor bar is nothing else but two groups of ir-leds, that are used as a reference point in space. you couls also use a lighter (or up to four) instead. the wiimote just sends you the coordinates of the reference points' (ir-led, lighter, whatever) projection on the wiimote's intenal ir-camera.
Is it posible to track the movements of people carrying wimotes in real space with puredata?
no, that is not quite possible with the sensors, that wiimote is equipped with. it has 3 accelerometers (x, y and z), but it is very difficult (probably impossible) to calculate a position out of this data. it would be possible to calculate the position with the data from the ir-camera, but then you would need at least 3 reference points and they would have to be always visible for the cam. since the angle is quite narrow, it is probably not too suitable for position tracking.
roman
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On Mon, 2007-10-29 at 07:12 -0400, Chris McCormick wrote:
Hi,
Well maybe you could fill a room with ir LEDs so that the Wiimote always has some LEDs in it's view, and then make each LED flash with a unique pattern. That way you could read the pattern being flashed by each LED to know which LED(s) the Wiimote is pointing at, and determine it's position in space from the positions of the LEDs in it's view.
yeah, i thought about that as well, but i am not sure how difficult it would be to sync the leds and the wiimote. every small jitter would give absolutely useless results and if you really want to make it jitter proof, then it's probably very slow... but it would definitely be nice to have some position tracking based on wiimote.
roman
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Chris McCormick -
Chuckk Hubbard -
punchik punchik -
Roman Haefeli -
Thomas Grill