[#] Kamera internetowa - Logitech QuickCam E3500

( Ostatnio zmieniony sob., 22/11/2008 - 02:17 )
 

Informacje podstawowe – wykrywanie przez Ubuntu 8.10

lsusb

Bus 004 Device 007: ID 046d:09a4 Logitech, Inc.

dmesg

[ 7705.756185] usbcore: deregistering interface driver uvcvideo
[ 7705.784906] uvcvideo: Found UVC 1.00 device <unnamed> (046d:09a4)
[ 7705.797753] input: UVC Camera (046d:09a4) as /devices/pci0000:00/0000:00:1d.7/usb4/4-1/4-1:1.0/input/input20
[ 7705.801623] usbcore: registered new interface driver uvcvideo
[ 7705.801631] USB Video Class driver (v0.1.0)

lshw -C sound

*-usb:0
      description: Video
      vendor: Logitech, Inc.
      physical id: 1
      bus info: usb@4:1
      version: 0.06
      serial: CA521220
      capabilities: usb-2.00
      configuration: driver=snd-usb-audio maxpower=500mA speed=480.0MB/s

luvcview -L

luvcview 0.2.4

SDL information:
  Video driver: x11
  A window manager is available
Device information:
  Device path:  /dev/video0
/dev/video0 does not support read i/o
{ pixelformat = 'MJPG', description = 'MJPEG' }
{ discrete: width = 160, height = 120 }
       Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 176, height = 144 }
       Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 240 }
       Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 352, height = 288 }
       Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 640, height = 480 }
       Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ pixelformat = 'YUYV', description = 'YUV 4:2:2 (YUYV)' }
{ discrete: width = 160, height = 120 }
       Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 176, height = 144 }
       Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 320, height = 240 }
       Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 352, height = 288 }
       Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,
{ discrete: width = 640, height = 480 }
       Time interval between frame: 1/30, 1/25, 1/20, 1/15, 1/10, 1/5,

Programy użytkowe

Testowane z powodzeniem: Ekiga, Skype 2.0, luvcview, quvcview

Zastosowanie

Podgląd w Mplayer

mplayer -tv driver=v4l2:width=640:height=480:device=/dev/video0:fps=30:outfmt=yuy2 tv://

Zrzut co 30 sekund

guvcview -i image.jpg -c 30

Problemy

Mała ilość klatek (fps ~5):

„For more FPS, you either need lots of light, or you need to switch off auto exposure and set the exposure value yourself. The two factors that influence the frame rate are generally the lighting conditions and the auto-exposure setting. If auto-exposure is enabled, the camera will reduce the frame rate in low light conditions in order to get a better image quality. So, to increase the frame rate, try to have better lighting and/or disable the auto-exposure. “

Brak obrazu (choć był)

sudo rmmod uvcvideo ;  sudo modprobe uvcvideo

Przydatne linki

http://forums.quickcamteam.net/…mdisplay.php?…
http://guvcview.berlios.de/downloads.html

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