>4.) In the meantime, does anyone have any suggestions? Particularly >so if you know of a camera that does infra-red out of box or is easy to >mod with the exposed film trick, as I'd prefer to make the markers subtle to >the human eye. If you want to mod the camera, take out the internal filter (which block IR), get the specs of your IR LEDs and get an IR filter which leaves only through exactly this frequency - putting this in the camera. This will get best results.
Incidentially, did you take a look at the Wii controllers? They work via bluetooth and have a 100Hz IR camera inside which tracks up to four IR points. They can be used via appropriate drivers under Linux and have been used e.g. for whiteboard applications. The high frame-rate allows for very interactive applications, whereas most USB webcams can only output the highest resolution at measly framerates (5-10fps...). You are severely limited in marker design and need specific IR LEDs, though. http://johnnylee.net/projects/wii/ I agree that the UVC cameras by Logitech are quite good. I've used the QC 9000 in a few projects and the image quality is very good for image processing, face recognition works out of the box, etc.. So using that and using visible-light markers would also be an option. Best, Alex -- Dr. Alexander K. Seewald Seewald Solutions www.seewald.at Tel. +43(664)1106886 Fax. +43(1)2533033/2764 _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
