广西师范大学学报（自然科学版） ›› 2018, Vol. 36 ›› Issue (2): 134-140.doi: 10.16088/j.issn.1001-6600.2018.02.019

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虚拟旋转鼓引发的自运动感知与视觉信息量的关系

韦妙鸾1,2,林佳吟1,2,刘汝娥3,罗洁1,2*   

  1. 1.中山大学工学院,广东广州 510006;
    2.中山大学广东省传感技术与生物医疗仪器重点实验室,广东广州510006;
    3.中山大学孙逸仙纪念医院设备科,广东广州510006
  • 收稿日期:2017-04-19 出版日期:2018-05-10 发布日期:2018-07-18
  • 通讯作者: 罗洁(1982—),女,湖南衡南人,中山大学讲师,博士。E-mail:luoj26@mail.sysu.edu.cn
  • 基金资助:
    国家自然科学基金(61401430);中央高校基本科研业务费(15lgpy25)

Relationship between the Information Entropy of Visual Sense and Vection Induced by Virtual Rotational Drum

WEI Miaoluan1,2,LIN Jiayin1,2,LIU Ru′e3,LUO Jie1,2*   

  1. 1.School of Engineering, Sun Yat-sen University,Guangzhou Guangdong 510006,China;
    2. Key Laboratory of Sensor Technology and Biomedical Instrument of Guangdong Province, Guangzhou Guangdong 510006,China;
    3. Equipment Department of Sun Yat-sen Memorial Hospital,Sun Yat-sen University,Guangzhou Guangdong 510006,China
  • Received:2017-04-19 Online:2018-05-10 Published:2018-07-18

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摘要： 虚拟现实技术作为一种新兴的人机交互技术,有望被用于医学、康复等领域。虚拟现实体验会引发人们产生自运动感知(vection),研究表明这种感知会受虚拟场景运动方向和视场角的影响,然而,还没有一种定量的方法来分析虚拟现实场景在自运动感知中所起的作用。本文研究中,让55个健康志愿者观看虚拟现实头盔中呈现的分别绕着俯仰轴(pitch)和偏航轴(yaw)旋转的旋转鼓虚拟场景,每次观看的时长为90 s,并口头报告自运动感知的首发时间和强度,再通过光流信息的一阶熵来估计虚拟场景的视觉信息量。实验结果显示,绕俯仰轴旋转的旋转鼓场景引发了较大的自运动感知,而该场景的光流熵在垂直方向上较大。本文实验从视觉信息量的角度证明大脑对垂直方向的感知更为敏感。

关键词: 虚拟现实, 自运动感知, 一阶熵, 视场角, 旋转鼓

Abstract: As an emerging technology, virtual reality is expected to be used in the field of medicine, rehabilitation and so on. A series of psychological phenomena, which have been reported, are affected by the rotational direction and the FOV of virtual reality scenes. However, there is no reported quantitative method to analyze the role of virtual reality scenes in vection perception. In this article, 55 participants were enrolled to view the virtual rotational drum rotating around Pitch axis and Yaw axis respectively, and were required to report vection onset and the strength orally. The two kinds of scenes were randomly displayed and repeated three times for each subject, and each display lasted for 90s. The information of the visual scenes was estimated by the first-order entropy of the optical flow. Vection perception was found to be stronger in Pitch rotation condition and the optical flow entropy of this scene was larger. In conclusion, the experiment verified that the brain is more sensitive to downward movement from the perspective of the information quantity of visual sense.

Key words: virtual reality, vection, entropy, field of view, rotational drum

中图分类号: 

  • Q426
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