[sldev] Anyone here with OpenCV experience?

[Dahlia Trimble]

Freetrack looks interesting and it would seem that using LEDs might help
with some of the potential environmental problems. Looks like it's GPLv2 so
it may be usable with an open source viewer, but could it be licensed under
the LL contributor agreement as well?
Perhaps with all of these options available it may be worthwhile to consider
some kind of universal interface and let the user connect up whatever
hardware they choose.



On Thu, May 21, 2009 at 7:54 PM, Tigro Spottystripes <
tigrospottystripes at gmail.com> wrote:

> 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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