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http://dx.doi.org/10.6109/jkiice.2017.21.7.1429

Automatic Defect Inspection with Adaptive Binarization and Bresenham's Algorithm for Spectacle Lens Products  

Kim, Kwang Baek (Division of Computer Software Engineering, Silla University)
Song, Dong Heon (Department of Computer Games, SongDam College)
Abstract
In automatic defect detection problem for spectacle lenses, it is important to extract lens area accurately. Many existing detection methods fail to do it due to insufficient minute noise removal. In this paper, we propose an automatic defect detection method using Bresenham algorithm and adaptive binarization strategy. After usual average binarization, we apply Bresenham algorithm that has the power in extracting ellipse shape from image. Then, adaptive binarization strategy is applied to the critical minute noise removal inside the lens area. After noise removal, We can also compute the influence factor of the defect based on the fuzzy logic with two membership functions such as the size of the defect and the distance of the defect from the center of the lens. In experiment, our method successfully extracts defects in 10 out of 12 example images that include CHEMI, MID, HL, HM type lenses.
Keywords
Adaptive binarization; Median filter; Background removal; Defect inspection;
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Times Cited By KSCI : 1  (Citation Analysis)
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