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Start the camera server

Start the viewer

  • Log onto the FACET control server with a proper ssh port tunnel and X-window forwarding:
    (1: SLAC network)   ssh smeuren@rhel6-64.slac.stanford.edu -Y
    (2: mcclogin)            ssh smeuren@mcclogin -Y
    (3: control server)   ssh fphysics@facet-srv01 -Y -R 42000:e320pi:42000

Streaming of color video from standard webcam (Apr 2022)

  • Currently used webcam supports a maximum of 5 FPS at 1920x1080 pixel
  • Data a read in YUV format from the camera, converted to BGR via OpenCV  (c++ code)
  • One core of the Raspberry pi devotes 20% CPU time to the image conversion
  • Data can be read directly into a numpy array for display on the client side (3x8-bit BGR)

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