[Klug-general] Webcams and remote controls

[J D Freeman]

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On Thu, May 28, 2009 at 04:31:47PM +0100, Karl Lattimer wrote:
> interesting requirements.... 

Thanks

> building a BYO 3D scanner? If I had that kit, that's probably what I'd
> be doing ;)

No, I already have a scanner for documents.

> Most of the cameras out there which are promoted as "Vista compatible"
> will work with the uvcvideo driver, as does any usb apple isight. 

Good to know.

> As for IR, you can go one of two ways, use a filter which you can get
> from a photographic shop, or try to do the filtering in software, which
> is doable, but difficult. You see the thing is, all of these cameras
> will pick up some IR light, but the visible spectrum produces a vastly
> stronger signal. In a similar way to the way the wiimote camera works,
> you can simply filter out the visible spectrum and concentrate on the
> IR. Cheap, and cheerful :)

Some modern webcams have a filter in them that filters the IR out, so that
the visible isn't over shaddowed by IR. 

http://www.hoagieshouse.com/IR/ for more info on this.

> You may also need a separate source of infrared to get an image through.
> This could be done with a couple infrared LEDs at 4-6 inches.

I already have a pile of IR LED's to make a illumination source from. 

> hate to say it but microsoft's mceusb remote is awesome :/ never mind,
> it's only a couple of dollars to the man.

I use a MS natural keyboard. Some of the MS hardware isn't all that bad...

MCEUSB looks like it should be perfect. Thanks

J
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