KEYWORDS: 3D metrology, Optical imaging, Metrology, Imaging systems, 3D image processing, Inspection, Transportation, Signal processing, Manufacturing, Detection and tracking algorithms
In modern intelligent transportation, the weight and shape size of vehicle wheel are ones of the crucial fundamental quantities to ensure their conformity to design specifications serving a range of monitoring and management, from expressway inspection, and ship transportation to house applications. In this paper, an intelligent high-speed 3D geometric measuring system of vehicle wheel was developed based on optical imaging technologies. An automatic contour recognition algorithm of vehicle wheel was proposed. 3D geometric dimensional of wheel was described by a series of critical feature points in a virtual environment. At last, a series of experiments of several typical vehicle wheels have been performed to demonstrate this geometric measuring system and the final Intelligence level. This measuring system have been proven to be amenable for practical purposes through many tests so that it might be applicable to achieve vehicle wheels in a practical working environment.
In modern intelligent scenarios, such as highway and ship, it is the most crucial to on-line measure the weight of vehicle by a fast and efficient way. Considering the varying body sizes of vehicles, ranging from a few meters to ten meters, it is needed to establish the relationships between the vehicle weight and the different shapes of vehicle wheel. In this paper, an on-line weight traceability measuring system of vehicle was developed by based on image sensing fusion technologies. We design some datum points to determine the geometric relationships between four optical sensors too, which located in different orientations. Finally, a series of experiments on conventional vehicle were carried out to demonstrate the weight measurements by considered of practical applications. The influence factors of weight measurement errors were also been discussed. Those results have been proven to be amenable for practical purposes through many tests so that it might be applicable to achieve intelligent weight measurements in highway toll station. Key words: weight; traceability; vehicle; optical imaging.
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