Office for Technology Commercialization

Near Infrared Detection of Humans in HOV Lanes

Technology #99201

Human Detection by Near Infrared

The number of humans in a vehicle can be detected using two near infrared (near-IR) cameras. The cameras detect body heat, which is constant for all humans under most conditions. Each camera is set to detect different bands of wavelengths, the images from the cameras are fused together to produce an intensified image with increased contrast between the humans and the background, and can be analyzed by pattern recognition software.

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Passenger Detection for HOV Lanes

With many states introducing high occupancy vehicle (HOV) lanes on congested highways, there is much interest in counting the number of occupants within a vehicle, both for statistical reasons, and so a fee can be charged to singly occupied vehicles using the lane. Gathering statistics manually puts a huge strain on the resources of the transport authority. Visible cameras are fast and have high resolution, but do not work with tinted windows or at night, infrared cameras do not have these problems.

Feature of the Near Infrared Human Detection System

  • Automatic occupant counting system for HOV lanes.
  • Uses near-IR emitted due to body heat, constant in all humans under almost all conditions.
  • The near-IR cameras work with tinted windows and at night.