That's really annoying !eduardofv wrote:Jeem, I've found that the webcam is not recognized on Debian
That's not awesome too, I realy hope it's just an old driver issue. All the projects I am planning to do on the Pi will be totaly useless without good webcam support :/eduardofv wrote:That said, I've tested the webcam with QT V4L2 test utility and found 18fps on a 352x288 resolution.
merlz42 wrote:It's likely that the slowdown is due to displaying it on the screen. Try running one of the openCV demo's, or turning the image display off and counting the fps that it can load from the camera at.
My guess is using feature detection will reduce the framerate about the same amount as displaying it, so you should still get about 18fps using haar features or something.
You can also try clocking your rpi to 800mhz, as that'll possibly give you a few fps boost. Increasing the RAM speeds may also help.
Feej wrote:I'd be very interested to know if anyone does manage to get a C270 working. They appear to be supported well for linux in general.
I spent some time (mine, and that of a very helpful IRC member ) last night recompiling and sticking the uvcvideo module in to my Debian kernel.
When attempting to run Cheese it definitely tries to do something (shows a "working" animation), but then segfaults. Haven't had a chance to look more closely just yet.
I found Arch Linux to be so much more stable and easy to get going with than Debian for OpenCV / webcam work. Also, one of my main breakthroughs was to go with smaller capture resolutions - my Pi just couldn't cope with full resolution from my (crappy) cam.Bluemerlin wrote:I've been preparing an OpenCV python program ready for the pi.
The pi arrived and I compiled the uvc video module for my webcam drivers, and the camera is now recognised.
However during the program I do a cvqueryframe I just get a seg fault (even with display output turned off. Will be seeing if others get the same problem.
It's not fast... I'm still using the python bindings, so ported an equivalent version of that sample grabbed from http://blog.jozilla.net/2008/06/27/fun- ... detection/ (although that needed some tweaking for efficiency, and for the latest python bindings).ucola wrote:Can you try the facedetection sample script (on OpenCV sample folder) and tell us about the performance?
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