한국멀티미디어학회논문지 (Journal of Korea Multimedia Society)

  • 제14권6호
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  • Pages.711-718
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  • 2011
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  • 1229-7771(pISSN)
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  • 2384-0102(eISSN)
한국멀티미디어학회 (Korea Multimedia Society)
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얼굴인식을 위한 거리척도학습 방법 비교

A Comparison of Distance Metric Learning Methods for Face Recognition

  • 투고 : 2011.04.05
  • 심사 : 2011.05.12
  • 발행 : 2011.06.30
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초록

얼굴인식과 같이 클래스의 수가 변하는 분류 문제에는 학습이 필요하지 않은 k-최근접이웃 분류기가 적합하다. 최근 학습 데이터의 분포를 반영하여 거리 척도를 학습하는 방법은 k 최근접이웃 분류기의 획기적 성능향상을 보고하였다. 거리척도학습 방법은 적용 분야에 따라 성능 개선 정도가 다르다. 본 논문에서는 얼굴인식에 대하여 주요 거리척도학습 방법의 성능을 비교한다. 공개 얼굴 데이터베이스에 대한 실험 결과는 성능 및 계산시간 측면에서 주성분 분석 기반의 마하라노비스 거리척도가 얼굴인식 문제에서는 여전히 좋은 선택이 될 수 있음을 보여준다.

The k-Nearest Neighbor classifier that does not require a training phase is appropriate for a variable number of classes problem like face recognition, Recently distance metric learning methods that is trained with a given data set have reported the significant improvement of the kNN classifier. However, the performance of a distance metric learning method is variable for each application, In this paper, we focus on the face recognition and compare the performance of the state-of-the-art distance metric learning methods, Our experimental results on the public face databases demonstrate that the Mahalanobis distance metric based on PCA is still competitive with respect to both performance and time complexity in face recognition.

키워드

참고문헌

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