The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Evaluation of Human Factors on Autostereoscopic 3D Viewing by Using Auditory Stimuli

청각자극을 이용한 무안경방식 3D 영상의 휴먼팩터 평가

  • 문성철 (한국과학기술연구원 과학기술연합대학원대학교 HCI 및 로봇응용공학과) ;
  • 조성진 (고려대학교 전기전자전파 공학과) ;
  • 박민철 (한국과학기술연구원 국가기반기술연구본부 센서시스템연구센터)
  • Received : 2013.07.31
  • Accepted : 2013.11.06
  • Published : 2013.11.30
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Abstract

This study investigated changes in behavioral performance before and after watching a multi-view 3D content by using auditory stimuli based on the selective attention theory in order to quantitatively evaluate 3D visual fatigue. Twenty-one undergraduates were asked to report on their current visual and physical condition both in the pre- and post-experiment. A selective attention task was conducted before and after mobile 3D viewing to compare the changes in performance. After performing a Wilcoxon's matched-pairs signed-ranks test on the subjective ratings of 3D visual fatigue, participants were categorized into two groups, unfatigued and fatigued group with a definite criterion. For the unfatigued group, no significant fatigue effects were found in behavioral response times and accuracies to specific auditory targets. In sharply contrast to the unfatigued group, the fatigued group showed significantly delayed response times and less response accuracies. However, no significant changes in accuracies for a working memory task were observed in both groups.

본 연구는 다차원 영상 시각피로를 정량적으로 평가하기 위해 선택적 주의이론에 근거한 청각자극 실험패러다임을 이용하여 시청 전후의 태스크 퍼포먼스 변화를 비교 평가하고자 하였다. 21명의 대학생들이 약 80분의 모바일 3D 콘텐츠 시청 전후에 청각자극을 이용한 선택적 주의 태스크를 각각 수행하였다. 실험참가자들의 주관피로평가 결과를 본페로니의 알파 수정을 적용한 윌콕슨 부호 순위 검정으로 분석하고 피로군과 비피로군으로 분류하여 태스크 퍼포먼스를 비교 평가하였다. 비피로군의 경우 시청 전후 태스크 퍼포먼스 인덱스에서 유의미한 차이가 나타나지 않았으나, 피로군의 경우 모바일 3D 콘텐츠 시청 후에 타겟에 대한 반응 시간이 유의하게 증가하고 반응 정확도가 유의하게 감소하였다. 작업기억 태스크 정확도의 경우는 두 그룹 다 유의미한 차이를 보이지 않았다.

Keywords

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