한국멀티미디어학회논문지 (Journal of Korea Multimedia Society)

  • 제20권8호
  • /
  • Pages.1175-1186
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  • 2017
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  • 1229-7771(pISSN)
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  • 2384-0102(eISSN)
한국멀티미디어학회 (Korea Multimedia Society)
권호 표지
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이미지 시퀀스 얼굴표정 기반 감정인식을 위한 가중 소프트 투표 분류 방법

Weighted Soft Voting Classification for Emotion Recognition from Facial Expressions on Image Sequences

  • Kim, Kyeong Tae (Dept. of Computer and Electronic Systems Eng., Hankuk University of Foreign Studies) ;
  • Choi, Jae Young (Dept. of Computer and Electronic Systems Eng., Hankuk University of Foreign Studies)
  • 투고 : 2017.07.17
  • 심사 : 2017.07.24
  • 발행 : 2017.08.31
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초록

Human emotion recognition is one of the promising applications in the era of artificial super intelligence. Thus far, facial expression traits are considered to be the most widely used information cues for realizing automated emotion recognition. This paper proposes a novel facial expression recognition (FER) method that works well for recognizing emotion from image sequences. To this end, we develop the so-called weighted soft voting classification (WSVC) algorithm. In the proposed WSVC, a number of classifiers are first constructed using different and multiple feature representations. In next, multiple classifiers are used for generating the recognition result (namely, soft voting) of each face image within a face sequence, yielding multiple soft voting outputs. Finally, these soft voting outputs are combined through using a weighted combination to decide the emotion class (e.g., anger) of a given face sequence. The weights for combination are effectively determined by measuring the quality of each face image, namely "peak expression intensity" and "frontal-pose degree". To test the proposed WSVC, CK+ FER database was used to perform extensive and comparative experimentations. The feasibility of our WSVC algorithm has been successfully demonstrated by comparing recently developed FER algorithms.

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