Digital Full-Face Mask Display with Expression Recognition using Embedded Photo Reflective Sensor Arrays
竹川佳成（公立はこだて未来大学），徳田雄嵩（フリーランス），梅澤章乃（公立はこだて未来大学），鈴木克洋，正井克俊，杉浦裕太，杉本麻樹（慶應義塾大学），Diego Martinez，Sriram Subramanian（University College London），平田圭二（公立はこだて未来大学）
Yoshinari Takegawa (Future University, Hakodate), Yutaka Tokuda (Freelance), Akino Umezawa (Future University, Hakodate), Katsuhiro Suzuki, Katsutoshi Masai, Yuta Sugiura, Maki Sugimoto (Keio University), Diego Martinez, Sriram Subramanian (University College of London), Keiji Hirata (Future University Hakodate)
Yoshinari Takegawa, Yutaka Tokuda, Akino Umezawa, Katsuhiro Suzuki, Katsutoshi Masai, Yuta Sugiura, Maki Sugimoto, Diego Martinez Plasencia, Sriram Subramanian, Keiji Hirata, Digital Full-Face Mask Display with Expression Recognition using Embedded Photo Reflective Sensor Arrays, International Symposium on Mixed and Augmented Reality 2020（ISMAR 2020）, to appear.
This paper presents a thin digital full-face mask display that can reflect an entire facial expression of a user onto an avatar to support augmented face-to-face communication in real environments. Although camera-based facial expression recognition technology has enabled people to augment their faces with avatars, application was limited to face-to-face communication in virtual environments. To enable digital facial augmentation with an avatar in a real space}, we propose a digital face mask display system that integrates a lightweight flexible display with a thin facial expression recognition system. The thin wearable facial expression recognition system was implemented with photo reflective sensor arrays which can measure facial expressions at 40 feature points distributed across an entire face. We investigated a ten-class facial expression identification model based on an SVM training algorithm. The trained model achieved an average accuracy of 79% when identifying the facial expressions of multiple users. User experiments indicated that the proposed thin digital full-face mask display allows the wearer to control the facial expression of the avatar with a fast response rate and create a positive sense of self-agency and self-ownership toward the augmented avatar face.