| 摘要 |
<p>PURPOSE:To easily install an equipment to reduce equipment cost and to improve reliability by deciding the size of a number plate by a picture processing, recognizing the two digits of a vehicle type classifying number, tread measuring, measuring the number of shafts and totally discriminating the type of the car while including the result of an overhang measurement and the result of a car height measurement. CONSTITUTION:When a vehicle enters a parking lot, simultaneously with the ON of a vehicle detection signal, a picture processor 6 picks up the front image of the vehicle. A front picture image pickup device 5 outputs a still picture video signal and the picture processor 6 fetches the signal and executes the recognition of the number plate and the measurement of a tread after executing A/D conversion. During the passage of the car, the picture of the side surface of the vehicle body is picked up and tires are detected from the picture. Then, the history of a tire position change is evaluated and forward/backward movements are judged. Then, the number of shafts to be passed until the end of the vehicle passage is calculated. When the passage of the vehicle is finished, the results of measuring the first shaft tread, number plate size, two digits in the vehicle type classifying number, shaft number, vehicle height and vehicle length or the like are totally decided and the vehicle type is discriminated. Thus, the equipments can be easily installed, the equipment cost can be reduced and the reliability is improved.</p> |
