Evaluation of Comfortableness with Facial Expression (3rd Report) : Characterisation of Facial Expression when in Motion Sickness

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  • 表情による快適性の評価に関する研究(第3報) : 乗り物酔い発症時の表情の特徴抽出
  • ヒョウジョウ ニ ヨル カイテキセイ ノ ヒョウカ ニ カンスル ケンキュウ ダイ3ポウ ノリモノ ヨイ ハッショウジ ノ ヒョウジョウ ノ トクチョウ チュウシュツ

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Abstract

The authors have been studying facial expression as a physiological index of motion sickness and ride quality. In this report, they observed and analysed facial expressions to extract some features when persons, exposed to a low-frequency oscillation, were suffering from motion sickness. As a result, a blank expression is found to be characteristic of the beginnings or a mild symptom of motion sickness. Experiments using line-drawing faces were conducted to clarify each contribution of facial factors such as eyebrows, eyes and mouth in the evaluation offacial expression. The lines on the face become an important key to suppose the condition of hypodermic facial muscles. The fuzzy-measure theory was introduced to describe non-additive synthesis in the evaluation by man. The authors concluded that realisation ofa blank expression is in need of its clues on all of eyebrows, eyes and mouth.

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