Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
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An Automatic Focusing Method Using Establishment of Step Size from Optical Axis Interval

광학축 간격의 스텝크기 설정을 통한 오토포커싱 방법

  • Kim, Gyung Bum (Aeronautical & Mechanical Design Engineering, Korea National University of Transportation) ;
  • Moon, Soon Hwan (Dept. New Renewable Energy, Chungbuk Health & Science University)
  • 김경범 (한국교통대학교 항공기계설계학과) ;
  • 문순환 (충북보건과학대 신재생에너지과)
  • Received : 2015.02.03
  • Accepted : 2015.03.23
  • Published : 2015.03.31
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Abstract

In this paper, an automatic focusing method has been proposed for speedy and reliable measurement and inspection in industry. It is very difficult to determine focusing step size and moving direction in one camera autofocusing. The proposed method can improve speed and accuracy of focusing by using the optical axis interval of two cameras, which is automatically set up as focusing step size. Also, it can determine moving direction from focus value comparisons of two cameras, and then solve ambiguity of one camera focusing. Its performance is verified by experiments. It is expected that it can apply to optical system for measurement and inspection in industry fields.

Keywords

References

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