Hi,

does somebody know if i put arround 10 RGB-LEDs (Blue LEDs:470nm,Green:528nm Red LEDs:621nm) inside a FTIR (IR-LEDs: Osram/850nm) table-setup (means: behind the Surface, where the camera is also located and pointing towards the surface) bother the blob tracking?
Since i am using also a ir-filter, which suposed to only bypass 850nm, it should be pretty save, put i made the experience that red-leds are usually recognized similar to IR.

Does someone have experience with that?

RGB-LED: http://de.farnell.com/avago-technologies/asmt-ytb0-0aa02/led-plcc6-0-35w-rgb/dp/1618713

Cheers!

If you are using an 850nm Band pass filter then theoretically only the 850nm wavelength should go through although different filters have different tolerances i think it is usually as little as +-3nm maybe less.  Check the info from were ever you sourced the BP filter normally this things a precision made and have all the relevant documentation.

Id say that with a 850nm BPF fitted to the cam it will not pick up the Red led.

Sounds cool though having a kind of “ambilight” effect going on in there!