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iTRAC : intelligent video compression for automated traffic surveillance systems.
  • Published Date:
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Filetype[PDF-1.23 MB]

  • Corporate Creators:
    Northwestern University (Evanston, Ill.). Center for the Commercialization of Innovative Transportation Technology
  • Resource Type:
  • Corporate Publisher:
    University Transportation Centers Program (U.S.)
  • Format:
  • Description:
    Non-intrusive video imaging sensors are commonly used in traffic monitoring

    and surveillance. For some applications it is necessary to transmit the video

    data over communication links. However, due to increased requirements of

    bitrate this means either expensive wired communication links or the video

    data being heavily compressed to not exceed the allowed communications

    bandwidth. Current video imaging solutions utilize aging video compression

    standards and require dedicated wired communication lines. Recently H.264

    (a newer standard) has been proposed to be used in transportation appli-

    cations. However, most video compression algorithms are not optimized for

    traffic video data and do not take into account the possible data analysis that

    will follow either in real time at the control center or online. As a result of

    compression, the visual quality of the data may be low, but more importantly,

    as our research efforts in vehicle tracking has shown, the tracking accuracy

    and efficiency is severely affected. iTRAC aims to inject highway content-

    awareness in the H.264 encoding standard. Our technology operates within

    the computational limits of consumer grade hardware equipment. With the

    possible reduction in bitrate we envision that we can provide a portable, easy

    to deploy, low cost, low power, wireless video imaging sensor.

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