Traffic violations are a common social issue not only in developed countries where cars are widespread but also in emerging countries where cars are becoming increasingly popular. Enforcement of traffic laws helps prevent traffic accidents and maintain a traffic environment where everyone can drive safely. Intelligent Transport Systems (ITS) are a type of infrastructure used to help with this enforcement. Governments continue to make efforts towards a safe automotive society, including the use of cameras to detect traffic violations such as speeding and ignoring of signals as well as the implementation of preventive safety measures that use license plate recognition and driver face recognition.
Traffic systems are used 24 hours a day/365 days a year without a shutdown. Vehicles travel at high speeds and imaging conditions are varied, including strong daylight conditions and artificial lighting used at night. These harsh environments require high-quality, high-speed image processing. Sony's global shutter CMOS image sensors can reliably capture such subjects.
Distortion-free imaging with low noise
Clear imaging without reflections – improved face recognition
Image sensors with a global shutter type offer accurate, undistorted imaging of vehicles and license plates moving at high speeds. Favorable PLS*1 characteristics also enable imaging without headlight blur.
*1 : Parasitic Light Sensitivity
High-resolution sensors allow for capture of license plates of multiple vehicles on a multi-lane road. Choose from a broad range of models, from compact to high-resolution sensors, according to the number of lanes.
Even in dark environments, the high-sensitivity and low-noise performance of the sensors enables clear license plate imaging for accurate information recognition.
The reflection of the window glass prevents to see inside the vehicle.
Using a polarizing filter, reflections on the window glass can be removed. However, depending on the type of vehicle (window angle), it is difficult to see inside.
Using a polarization image sensor, reflection can be removed for almost all types of vehicle.*3
White Paper
The Principle of Reflection Removal Utilizing Polarization
and Features of Polarization Image Sensor
*Preigus, Pregius S, Polarsens and logos are trademarks of Sony Group Corporation.
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