Journal of Korea Society of Industrial Information Systems (한국산업정보학회논문지)

Korea Society of Industrial Information Systems (한국산업정보학회)
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An Efficient Preprocessing Technique for Improving the Performance of the Crease Detection

지문 영상의 주름선 검출을 위한 효율적인 전처리 기법

  • Published : 2009.12.30
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Abstract

In this paper, We propose an highly efficient preprocessing technique for improving the performance of the crease extraction method, which can improve the accuracy of feature extraction within the fingerprint image. The proposed method applies the 1-dimensional directional slit for each pixel in fingerprint image. Once the direction of every pixel in crease candidate area is estimated, it is decomposed into different images depending on their direction. From the directional images, the crease clusters are estimated by utilizing the property of crease area. The proposed method finally extracts the crease from the crease clusters estimated from directional images.

본 논문에서는 지문 영상 내부에서 특징 정보 추출의 정확성을 향상시킬 수 있도록 영상 전처리 과정에 방향성 중간 값 필터를 적용한 주름선 검출 방법을 제안한다. 제안한 방법은 먼저 픽셀이 주름선 후보 영역에 해당하는지를 결정하여 그 위치에 해당하는 주름선 방향을 검출한다. 그리고 주름선 검출의 성능 향상을 위해 후보 영역에 대한 방향성 중간값 필터를 적용하여 지문 영상을 향상시킨 다음, 후보 화소로 구성된 영상에서 후보 화소가 가지는 주름선 방향을 이용하여 영상의 분해 및 합성을 통해 주름선 영역을 검출한다.

Keywords

References

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