SHI Ying, XIA Chun-hua, HU Lin-na, et al. Intelligent recognition method for reading of pointer instrument based on machine vision[J]. 2017, 36(11): 47-49+52.
SHI Ying, XIA Chun-hua, HU Lin-na, et al. Intelligent recognition method for reading of pointer instrument based on machine vision[J]. 2017, 36(11): 47-49+52. DOI: 10.13873/j.1000-9787(2017)11-0047-03.
In order to identify the reading of pointer instrument automatically and accurately
an intelligent recognition method of pointer instrument is proposed based on machine vision. The reading of pointer instrument is recognized based on machine vision
combined with image subtraction and Hough transformation. Pointer instrument image is preprocessed by image binarization
morphological processing and edge detection. Direction of the pointer and the position of the circle are determined by Hough transformation
in order to realize intelligent recognition method of pointer instrument. Experimental result shows that the average relative error is 0.91 %
the precision is high
the reading of pointer instrument can be recognized accurately by this method.