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  1. #1

    Logitechc920 camera doesn't work with ARToolkit(Ubuntu 12.04 x86_64)

    My embedded Toshiba c855-s5206 web camera works fine with ARToolkit 2.72.1 . But I'm having trouble in making the "simpleTest" run with my Logitech c920 webcam. I get the following error when I run the ./simpleTest woth the Logithech c920 webcam:

    Using config string from environment [v4l2src device=/dev/video0 ! image/
    jpeg,width=1920,height=1080,framerate=15/1,rate=15 ! queue ! jpegdec ! queue ! ffmpegcolorspace !
    identity name=artoolkit ! fakesink].
    libARvideo: GStreamer 0.10.36
    libARvideo: GStreamer pipeline is PAUSED!
    libARvideo: GStreamer negotiated 1920x1080
    libARvideo: GStreamer pipeline is PLAYING!
    libARvideo: GStreamer pipeline is PAUSED!
    Image size (x,y) = (1920,1080)
    *** Camera Parameter ***
    SIZE = 1920, 1080
    Distortion factor = 955.500000 790.500000 2.911111 1.012757
    2102.85441 0.00000 949.50000 0.00000
    0.00000 2178.28254 724.50000 0.00000
    0.00000 0.00000 1.00000 0.00000
    libARvideo: GStreamer pipeline is PLAYING!
    Segmentation fault (core dumped)

    The camera works fine with Gstreamer but I get this error with any binary I run from the examples of ARToolkit. Additionally, I tried to lower the resolution and frame rate of the camera by changing the "width=1920,height=1080,framerate=15/1,rate=15" with lower values.

    Do you have any idea what's going on??

  2. #2
    Just Joined!
    Join Date
    Nov 2012
    Tunis, Tunisia
    I don't know the exact problem but maybe the resolution is rather than your current resolution, so change it for example to 800 x 400 and tell us the result.

    Best regards

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