TV映像の明度分布分析による自動車の認識

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  • Recognition of Automobiles by Analyzing the Brightness Distribution of TV Image
  • TV エイゾウ ノ メイド ブンプ ブンセキ ニヨル ジドウシャ ノ ニンシキ

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In order to plan the road design, it is necessary to measure the traffic flow. Though the main factors of these parameters are how the speed of the vehicles are and what kind of the vehicle size it is, the basic one is the vehicle volume. This paper deals with the method to recognize automobiles by analyzing the brightness distribution on TV image of vehicle flow.<br>Though the vehicle flow on the expressways is measured by 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 methods are not useful for automobile traffic flow survey. For the practical survey in recent years, the standard video systems are employed because setting of them on arbitrary point is easy.<br>In this paper, a road and a vehicle are distinguishable by analyzing the brightness distribution of TV image. The brightness distribution of the road is generally uniform instead of illuminance change, and this distribution changes by over lap of vehicle on the road. It is possible to analyze it by the simple algorithm. Therefore, the brightness distribution is rated by the standard deviation. And the real time measurement become realizable.

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