The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Similar and rotation invariant optical pattern recognition characteristics of SA-MPOF

SA-MPOF의 유사 및 회전불변 광패턴인식 특성

  • Yeun, Jin-Seon (Dept. of Computer & Comm. Eng., Chungbuk Nat'l Univ.) ;
  • Lee, Yeon-Seon (Dept. of Computer & Comm. Eng., Chungbuk Nat'l Univ.) ;
  • Kim, Nam (Dept. of Computer & Comm. Eng., Chungbuk Nat'l Univ.) ;
  • Um, Joo-Uk (Infor. Super Highway Group, B-ISDN R&D Management Dept., Korea Telecom) ;
  • Park, Han-Kyu (Dept. of Electronic Eng., Yonsei Univ.)
  • 윤진선 (충북대학교 정보통신공학과) ;
  • 이연선 (충북대학교 정보통신공학과) ;
  • 김남 (충북대학교 정보통신공학과) ;
  • 엄주욱 (한국통신 초고속통신추진본부) ;
  • 박한규 (연세대학교 전자공학과)
  • Published : 1996.04.01
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Abstract

In this paper, multiplhase only filter(MPOFs) are designed using simulated annealing algorithm. These filters have excellent recognition characteristics for similar patterns or rotated patterns and enhance optical efficiency as well as spatial-bandwidth product by deleting mirror image. As the result of computer simulation to certify recogntion characteristics of similar patterns, simulated annealing-MPOF(SA-MPOF) has superior discrimination and higher correlation peak values than cosine binary phase only filters(CBPOF) and simpulated annealing-BPOF (SA-BPOF). THe filter having training process for rotated patterns of arbitraty possible angle can overcome that phase only filter(POF) and CBPOF can't recognize rotated input patterns.

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