Vehicle Flow Rate Measurement based on TV Picture

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  • TV画像による交通量計測
  • TV ガゾウ ニ ヨル コウツウリョウ ケイソク

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Abstract

Though the vehicle flow measurement on the expressways is done using a loop coil sensor or an ultra sonic sensor, the system construction has many difficulties such as shutoff of traffic flow and requirement of many funds, these detecting method are not useful for automobile traffic flow survey. For the practical survey in recent days, the standard video systems are employed because setting of them on arbitrary point is very easy, but detecting accuracy is not high enough. Authors developed the detecting system which function is real time processing and high accuracy using usual video system. The recognition method of the vehicles and the scheme of system construction method are reported in this paper.<br>The recognition of a vehicle in this system is achieved on the spacial Fourier spectrum for the finite part of video picture, and the real time processing is done by substitute transformation for Fourier transformation. This system construction requires only simple digital signal processor and small size personal computer.

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