Journal of Korea Society of Industrial Information Systems (한국산업정보학회논문지)

Korea Society of Industrial Information Systems (한국산업정보학회)
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Face Image Retrieval by Using Eigenface Projection Distance

고유영상 투영거리를 이용한 얼굴영상 검색

  • 임길택 (경주대학교 컴퓨터멀티미디어공학부)
  • Published : 2009.12.30
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Abstract

In this paper, we propose an efficient method of face retrieval by using PCA(principal component analysis) based features. The coarse-to-fine strategy is adopted to sort the retrieval results in the lower dimensional eigenface space and to rearrange candidates at high ranks in higher dimensional eigenface space. To evaluate similarity between a query face image and class reference image, we utilize the PD (projection distance), MQDF(modified quadratic distance function) and MED(minimum Euclidean distance). The experimental results show that the proposed method which rearrange the retrieval results incrementally by using projection distance is efficient for face image retrieval.

본 논문에서는 PCA(principal component analysis)기반의 특징을 이용한 효율적인 얼굴검색 방법을 제안한다. coarse-to-fine 전략을 사용하여 저차원 고유얼굴 공간에서 검색 결과들을 1차 정렬한 후 상위 후보들을 확장된 차원의 고유얼굴 공간에서 재정렬하는 방식으로 검색 순위를 재조정한다. 질의 영상과 클래스간의 유사도의 측정을 위해 PD(projection distance), MQDF(modified quadratic distance function), MED(minimum Euclidean distance)를 사용한다. 실험 결과 $32{\times}32$ 크기의 질의 영상에 PD를 활용하여 점진적으로 검색 결과를 조정하는 제안하는 방법이 얼굴검색에 효율적임을 알 수 있었다.

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References

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