Scratch Inspection of Spectacle Lens Based on Fuzzy Logic

  • Kwang-Beak Kim
  • Doo Heon Song
  • Jae-Hyun Cho
  • Young Woon Woo
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 235)


In this paper, we propose an intelligent method to detect small scratches from eyeglasses using fuzzy logic. Inspecting scratches of eyeglasses largely depends on the native eye exam that may lead providing defected eyeglasses to customers at optician’s shop since those small scratches are often occurred in the process of transportation rather than that of production. Our method computes the possibility of ill-effect by scratch on glasses with membership degree of the scratch size and that of distance between the center and the scratch from candidate scratched areas extracted in the pre-processing phase. Our method is applied to CHEMI MID HL HM dioptric lenses in experiment and it is verified that the proposed method is sufficiently effective by real optician’s evaluation.


Dioptric lens Fuzzy logic Scratch extraction Eyeglass inspection Eyeglass defection 


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Kwang-Beak Kim
    • 1
  • Doo Heon Song
    • 2
  • Jae-Hyun Cho
    • 3
  • Young Woon Woo
    • 4
  1. 1.Department of Computer EngineeringSilla UniversityBusanKorea
  2. 2.Department of Computer GamesYong-In Songdam CollegeGyeonggi-doKorea
  3. 3.Department of Computer EngineeringCatholic University of PusanBusanKorea
  4. 4.Department of Multimedia EngineeringDong-Eui UniversityBusanKorea

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