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《China Meas Urement》 2007-01
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Natural gas meter inspection based on image processing

YE Cong-sheng,HU Xiao-bing,GUAN Qing-gui,YIN Guo-fu(School of Manufacturing and Engineering,Sichuan University,Chengdu 610065,China)  
This paper introduced a approach to identify numeric reading of natural gas meter,which was based on the representative shape characters of printed digits.By encoding the outer contour of digit with a compact and highly effective method which was aided by other shape characters,such as the ratio of length-width and the lumens of some digits,both results could be recognized correctly when either the half-digit or whole-digit situation appeared.So the automation of reading the natural gas meter in the process of inspection was implemented.After applying the research introduced in this paper to practice,the new system has greatly improved the efficiency,from the half automation system of inspecting 8 natural gas meters per day to 40 now.
【CateGory Index】: TP274.4
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