Head Tracking with Cliffs of Dover

[Royraiden]

Originally Posted by MadBlaster

I think it worth mentioning possible safety issue here. It is not good for your eyes to look at infrared light source. If you do reflective setup, make sure the LED's are not infrared.

I guess it wouldnt work without ir led's.I think the Trackir camera uses ir led's that the reflective clip,well reflects.

[SEE]

Just a thought, WOP (which is only 12 months old) supports both TIR and FT so I guess it must use the older 'non encrypted interface'. May be CoD will be similar, we will have to wait and see. Without a definitive answer from the Dev's we are all pretty much guessing.

[MadBlaster]

To clarify what I was thinking. In a reflective setup you would use reflective tape instead of LED's in your headset. The light source would be at the camera. That's the direction I thought SpecJock was going in his comment. So, you would not want to use infrared led under that design, because it would be pointed towards you instead of away from you, and you would get eye damage.

[julian265]

Originally Posted by MadBlaster

To clarify what I was thinking. In a reflective setup you would use reflective tape instead of LED's in your headset. The light source would be at the camera. That's the direction I thought SpecJock was going in his comment. So, you would not want to use infrared led under that design, because it would be pointed towards you instead of away from you, and you would get eye damage.

Normal IR LEDs are incapable of damaging your eyes, they do not emit the power or wavelength required to heat anything.

The average hand held video camera with "night-vision" has IR LEDs, with no safety concerns being raised.

[MadBlaster]

@julian

Please go back and re-read. Talking about high-output infrared LED that produces invisible light that your eye can not see. I really don't think it is a good idea to be staring at this for hour and hours. It just isn't worth the risk. Use a high output non-infrared LED for this type of setup.

[julian265]

Originally Posted by MadBlaster

@julian

Please go back and re-read. Talking about high-output infrared LED that produces invisible light that your eye can not see. I really don't think it is a good idea to be staring at this for hour and hours. It just isn't worth the risk. Use a high output non-infrared LED for this type of setup.

There is no need for high-output IR LEDs for this purpose. Thinking it isn't a good idea is different to there being actual risk of eye damage.

A quick search found this:
http://www.axis.com/products/cam_iri...Red_011107.pdf
Which is a product that emits many times more power than the small IR LED's for our purpose.

Of course, if you can find documentation stating that there is a risk from looking at a 0.1W IR LED, then I'd be interested to see it.

[MadBlaster]

Originally Posted by julian265

There is no need for high-output IR LEDs for this purpose.

I'm glad you agree. Now go outside and stare at the sun for a few hours.