Journal of the Institute of Electronics Engineers of Korea CI (전자공학회논문지CI)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Facial Boundary Detection using an Active Contour Model

활성 윤곽선 모델을 이용한 얼굴 경계선 추출

  • Chang Jae Sik (Dept. of Computer Eng. at Kyungpook National University) ;
  • Kim Eun Yi (Dept. of Internet and Multimedia Eng., Konkuk University) ;
  • Kim Hang Joon (Dept. of Computer Eng. at Kyungpook National University)
  • 장재식 (경북대학교 컴퓨터공학과) ;
  • 김은이 (건국대학교 인터넷미디어공학부) ;
  • 김항준 (경북대학교 컴퓨터공학과)
  • Published : 2005.01.01
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Abstract

This paper presents an active contour model for extracting accurate facial regions in complex environments. In the model, a contour is represented by a zero level set of level function φ, and evolved via level set partial differential equations. Then, unlike general active contours, skin color information that is represented by 2D Gaussian model is used for evolving and slopping a curve, which allows the proposed method to be robust to noise and varying pose. To assess the effectiveness of the proposed method it was tested with several natural scenes, and the results were compared with those of geodesic active contours. Experimental results demonstrate the superior performance of the proposed method.

본 논문에서는 복잡한 환경에서 정확한 얼굴영역의 경계를 추출하기 위한 활성 윤곽선 모델(Active Contour Model)을 제안한다. 제안된 모델에서 윤곽선은 레벨 함수 φ의 제로 레벨 집합으로 표현되고, 레벨 집합의 편미분 방정식을 통해 진화된다. 이 때, 제안된 모델에서는 윤곽선의 진화와 종교를 위해 2차원 가우시안 모델로 표현되는 피부색 정보를 이용한다. 이를 통해 잡음 및 다양한 포즈를 가지는 복잡한 영상에서도 정확한 얼굴 경계선을 얻을 수 있는 강건한 추출 방법이 구현된다. 제안된 방법의 유효성을 평가하기 위해서 다양한 영상에 대해서 실험이 이루어졌으며, 그 결과를 geodesic 활성 윤곽선 모델의 결과와 비교하였다. 실험결과는 제안된 방법의 보다 나은 성능을 보여준다.

Keywords

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