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| A Novel Water Meter Calibration Method Based on Machine Vision Technology |
| TANG Si-meng1,ZHAO Jie-yu2,LU Xiao-feng1 |
1.Ningbo Institute of Measurement and Testing, Ningbo, Zhejiang 315048, China;
2.The College of Information Science and Engineering, Ningbo University, Ningbo, Zhejiang 315211, China |
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Abstract The machine vision technology applied to the water meter calibration is discribed. Several high speed and high resolution cameras are installed at the top of the checked meter to dynamically access the running water meter image. The meter pointer is accurately positioned using color feature modeling and background Gaussian fitting methods. Machine vision approaches are used to convert the captured images into digital readouts. Encountered problems such as blurred surface and air bubble interfere are overcome. The developed system realizes high efficient automatic water meter verification.
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2015, Vol. 36 
