Dual template optical correlator for pattern recognition

Freddie Y. Chin, Michael Geoffrey Somekh, M. S. Valera, J. A. Crowe

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)


A new coherent optical correlator system has been developed for intended application to breast cancer screening. Such a system must have an inherent capability to deal with patterns that have high degrees of similarity between the desired and rejected classes, due to the overall similarity between benign and malignant cells. Consequently, effort has been directed toward achieving this goal. This paper presents an optical configuration that contains two coherent optical processors (COPs) working in parallel and utilizes phase-stepping detection at the output to multiply the two correlation signals. It is shown how this scheme offers an excellent compromise between good discrimination and immunity from noise added in the input plane.
Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Number of pages10
ISBN (Print)0819407933
Publication statusPublished - 1 Dec 1992
Externally publishedYes
EventHolography, Interferometry, and Optical Pattern Recognition in Biomedicine II - Los Angeles, CA, United States
Duration: 23 Jan 199224 Jan 1992


ConferenceHolography, Interferometry, and Optical Pattern Recognition in Biomedicine II
Country/TerritoryUnited States
CityLos Angeles, CA

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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