Wednesday, February 18, 2015

DIY Infrared Head Tracking

I just built my own Head tracking device, it works like a charm, even with high luminosity on the white wall behind me !

Here is the path i followed :
  • Will use 3 point tracking since it gives good performances and low latency.
  • Will use infrared lights spots ( to be able to track in daylight )
  • Will use my webcam with IR filters to track spots.
  • Will use FaceTrackNoIR as it provides most usefull protocols.

Bills of materials

  • 3 x OSRAM - LD271 - IR 5MM 950N
  • 1 x 5.6 ohm 1/4W Resistor ( Green Blue Gold)
  • 1 x USB cable
  • 1 x USB > AC Converter ( Optional )

Electric Array

The electric array will look like this :
    +----|>|----|>|----|>|---/\/\/----+  R = 5.6 ohms

Weld in series the LED and the Resistor.
Then weld circuit to USB cable.

3 points home made head clip

You need a chassis to mount led, It should be an 'L' shape. See picture below.

I used a thin metal bar that I forged to my own taste.

IR Receiver

Next IR receiver: I used a Webcam with 5 pieces of negative photograpric film as IR filter. ( More film allow better filtering )


I've mounted the whole on my headset , that's all, a full functionnal head tracking device < 10 €

Next I'll build my DIY Virtual Reality headset …