[sldev] Anyone here with OpenCV experience?

Tigro Spottystripes tigrospottystripes at gmail.com
Thu May 21 19:54:15 PDT 2009


I don't wanna sound like I'm promoting it nor anything, but I think you
should give Freetrack a try, from what I've read it might allow for a
better enjoyment of your TrackIR

Jan Ciger escreveu:
> Moriz Gupte wrote:
> > This is funny. You dont seem enthusiastic about it.. yet the clip you
> > posted makes me want to buy the TrackIR :)
> > Getting motion scaling right is key... man I did not think this would
> > work so well ...at least the demo in the second clip is awesome. Thanks
> > for clips.
>
>
> We actually have several of the TrackIR devices in the lab. I think I
> have tried probably all versions of it (we have some special
> arrangements with Natural Point). In short - it works and it is quite
> robust, but do not expect miracles from it. If you are willing to wear a
> cap with a marker(s) or stick a reflective point to your forehead, it is
> OK. It doesn't like direct sunlight and reflective surfaces (e.g.
> glasses) which make false markers.
>
> It works either as a mouse emulator (turning your head moves the mouse
> cursor) - e.g. SL in mouselook could work with it without changes. Or
> you can develop your own app using their SDKs. The whole device is
> basically an USB infrared webcam + software, nothing else - essentially
> what Philip was asking for.
>
> There is a usability issue with it, though - if you turn your head to
> the left, for example, the image on the screen moves accordingly -
> however you probably do not see it any more because you are looking left
> of the screen. In the best case you are squinting back at the screen
> using your peripheral vision. These kind of devices work best if you
> have at least 180 degrees  field of view covered (e.g. 3
> screens/projectors in a U shape), a regular screen is not very natural
> with it.
>
> Regards,
>
> Jan
>
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