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Machine Vision Based Automatic Detection Method of Indicating Values of a Pointer Gauge
Joint Authors
Chi, Jian-nan
Zhang, Guo-sheng
Liu, Lei
Liu, Jiwei
Jiang, Zhaoxuan
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-19, 19 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-10-04
Country of Publication
Egypt
No. of Pages
19
Main Subjects
Abstract EN
This study proposes an automatic reading approach for a pointer gauge based on computer vision.
Moreover, the study aims to highlight the defects of the current automatic-recognition method of the pointer gauge and introduces a method that uses a coarse-to-fine scheme and has superior performance in the accuracy and stability of its reading identification.
First, it uses the region growing method to locate the dial region and its center.
Second, it uses an improved central projection method to determine the circular scale region under the polar coordinate system and detect the scale marks.
Then, the border detection is implemented in the dial image, and the Hough transform method is used to obtain the pointer direction by means of pointer contour fitting.
Finally, the reading of the gauge is obtained by comparing the location of the pointer with the scale marks.
The experimental results demonstrate the effectiveness of the proposed approach.
This approach is applicable for reading gauges whose scale marks are either evenly or unevenly distributed.
American Psychological Association (APA)
Chi, Jian-nan& Liu, Lei& Liu, Jiwei& Jiang, Zhaoxuan& Zhang, Guo-sheng. 2015. Machine Vision Based Automatic Detection Method of Indicating Values of a Pointer Gauge. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-19.
https://search.emarefa.net/detail/BIM-1073410
Modern Language Association (MLA)
Chi, Jian-nan…[et al.]. Machine Vision Based Automatic Detection Method of Indicating Values of a Pointer Gauge. Mathematical Problems in Engineering No. 2015 (2015), pp.1-19.
https://search.emarefa.net/detail/BIM-1073410
American Medical Association (AMA)
Chi, Jian-nan& Liu, Lei& Liu, Jiwei& Jiang, Zhaoxuan& Zhang, Guo-sheng. Machine Vision Based Automatic Detection Method of Indicating Values of a Pointer Gauge. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-19.
https://search.emarefa.net/detail/BIM-1073410
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1073410