Volume 8 Number 5 (May 2013)
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JCP 2013 Vol.8(5): 1309-1314 ISSN: 1796-203X
doi: 10.4304/jcp.8.5.1309-1314

Automatic Value Identification of Pointer-Type Pressure Gauge Based on Machine Vision

Xiaofeng Ye1, Dailiang Xie1, and Shan Tao2
1 College of Metrological Technology & Engineering, China Jiliang University, Hangzhou, China
2 Fair Friend Institute of Electromechanics, Hangzhou Vocational & Technical College, Hangzhou, China


Abstract—This paper presents a new method of value identification of pointer-type pressure gauges based on machine vision, by which an automatic calibration system can be designed. Hough Transformation, image subtraction and image thinning technique are employed to obtain the coordinate of the pointer rotating center. Through removing the pixels data outside of the circumference of the pointer in the single panel image, the linear equation of the pointer is achieved after the processing of image thinning and Hough transformation. Experiments are carried out on a pressure calibration device. The results show that the accuracy and speed of the automatic identification of the pressure gauge is improved.

Index Terms—Machine Vision, Hough Transformation, Gauge panel

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Cite: Xiaofeng Ye, Dailiang Xie, and Shan Tao, " Automatic Value Identification of Pointer-Type Pressure Gauge Based on Machine Vision," Journal of Computers vol. 8, no. 5, pp. 1309-1314, 2013.

General Information

ISSN: 1796-203X
Abbreviated Title: J.Comput.
Frequency: Monthly
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO,  ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat, CNKI,etc
E-mail: jcp@iap.org
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