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

  • 제22권5호
  • /
  • Pages.928-938
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  • 1997
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  • 1226-4717(pISSN)
  • /
  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

다해상도 방향성 정보를 이용한 지문영상의 특이점 추출

Extraction of singular points of fingerprint image using multiresolution directional information

  • 발행 : 1997.05.01
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초록

We propose an algorithm for extracting singular points of fingerprint image using directional information. First, we extract the candidates of singular points using Poincare index in two(lower and higher) resolutional directional images. Then we remove the false singular points using smoothing technique from lower resolutional directional image. And finally we select the singular points in higher resolution corresponding to those in lower resolution. The possible missing points in lower resolution are found by computing Poincare index algong the proposed small curve. And the reliable points are selected from analysis around them. We also propose a method for segmentation of fingerprint as preprocessing step to enhance the computational speed and the performance of system.

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참고문헌

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  8. 대한 전자공학회 논문지 v.32-B no.6 블럭 FFT를 이용한 실시간 지문인식 알고리즘 안도성;김학일
  9. Pattern Recognition v.17 no.3 Fingerprint pattern classification M. Kawagoe;A. Tojo
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