> > The application is for the camera to pan and follow a laser pointer about
> > in a video-conferening type situation. The PC already has the processing
>
> > Simple C routine to find a laser spot (need to pulse laser though):
> > http://www.swrtec.de/swrtec/robot2/findlaser.html
>
> They use the usual technique, take a reference immage and your new one,
> then do a diff of the pixels. The laser is where the diff is. You would
> also have to look for a high red value in the diff otherwise you would
> pick up people etc. I might have a go at hacking up something on my next
> free night.
Yup, it's pretty straightforward and takes care of reflections too.
The only drawback is they need a picture without the laser point _for
every picture_ in which the laser point is to be detected.
One solution is to pulse the laser beam and send the sync info to the
Image processing platform.
Do you know of any webcam-type digital camera that does video on Linux?
(no capture card; Parallel port or even alpha USB support).
Regards,
Sonam
--
Sonam Chauhan
Electronic Commerce
Corporate Express Australia Ltd.
Phone: +61-2-9335-0725 Fax: +61-2-9335-0753
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