Author Topic: sensitivity  (Read 6380 times)

chroos

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on: July 06, 2008, 07:00:22 PM
hi there ...

is it possible to get the sensitivity so low, that the finger gets recognized withot the reflective tape?

i read about the settings and it seems, that the threshold can be set to 0, so that every little light scource would be detected as blob..

that way it would be possible to use the wiimote with ftir and di setupts, like webcams.. just without cpu usage..

is that filter in frint of the cameramodule the only filter, the camera has, or is there maybe another filter inside the module, thats blocking all light?

i dont think it can't be done to recognize less bright blobs..

please tell me what u know ;)



Offline UndCon

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Reply #1 on: July 07, 2008, 01:18:43 AM
I have tried to use the wiimote for FTIR and there is only 1 problem....you can only track 4 points with the wiimote - if you are going to use it for something like Nuigroup you simply have to track more dots...

Besides that it works quite well - no webcam to modify as the camera is already setup for IR
//UndCon



chroos

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Reply #2 on: July 07, 2008, 04:19:52 AM
i tried Di and ftir, but i couldnt get any blob recognized...

i wouldnt care about the 4 point limitation..

i made a midi controller, that doesnt need more than 4 points to work a good way

how did you make the wiimote recognizing the blobs on ftir? im testing since days... with several filter.. i cant get it to work..

greetings chroos



Offline UndCon

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Reply #3 on: July 07, 2008, 05:52:58 AM
I tracked fingers like Johnny Lee's sample...

An IRarray used from the front or FTIR in a Plexiglass surface is not that far from each other




chroos

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Reply #4 on: July 07, 2008, 07:07:36 AM
..the blobs i get aren't as bright as the leds itself... without using reflective tape and di im not able to track fingers



Offline UndCon

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Reply #5 on: July 07, 2008, 07:45:00 AM
same here - I also had to use reflective tape...



chroos

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Reply #6 on: July 07, 2008, 12:54:28 PM
so it coudnt be possible to increase te sensivity so track lower bright light?



Offline UndCon

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Reply #7 on: July 07, 2008, 05:16:17 PM
I didn't tested that far i'm afraid