27 VR Effects of the position of viewpoint on self body in VR environment

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1 27 VR Effects of the position of viewpoint on self body in VR environment

2 VR (HMD), HMD (VR). VR,.. HMD,., VR,.,.,,,,., VR,. HMD VR i

3 Abstract Effects of the position of viewpoint on self body in VR environment Ryu KAGAYAMA Recently inexpensive head-mounted display (HMD) have been developed and many people are able to enjoy a virtual reality (VR). By using VR technology, it is possible to experience event which never happen in the real world. For example, it is possible to isolate the observers own viewpoint from their own body using a camera and a HMD. However, when working with a different viewpoint from their own body wearing a HMD, it is unclear how this difference influences to the human performance and their bodies. In this study, the effects of the difference between the self-body and the viewpoint in VR environment on the users performance and their self-body were investigated using block copy task (repositioning the block in the right side to be the same as the block presented in the left side). The results showed that in the condition that the viewpoint passively changed, the significant effects were found in the task completion time and the severity of motion sickness, and in the condition with a horizontal physical shift of the viewpoint, the significant effects of the number of head turns and the severity of motion sickness were found. Thus, the mismatch of the self-body and the viewpoint in VR environment influences the users performance and their self-body. key words HMD VR BlockCopy MotionSickness ii

4 Telexistence( ) SSQ SSQ iii

5 SSQTotalScore Nausea( ) Oculomotor( ) Disorientation( ) iv

6 2.1 LEGO LEGO (MPR202) PlayStationEye Oculus Rift DK LifeCam HD HMD v

7 TotalScore Nausea Oculomotor Disorientation vi

8 2.1 SSQ [4] ( ) SSQTotalScore Nausea Oculomotor Disorientaion vii

9 1 1.1 (HMD), HMD (VR). VR, VR [2].,, VR. 1.2 VR,. 1, HMD.,,. HMD,. VR,. 1

10 1.3 Telexistence( ) 1.3 Telexistence( ), VR,.,,., [2][5]. 2

11 2 2.1, HMD., [1].,,,, SSQ. 3, VR,. 3

12 , LEGO Block 16, LEGO 2. HMD Oculus Rift DK2(Oculus VR ) ( 2.5). Web PlayStationEye 2 ( 2.4), Web MPR-202 ( 2.3). Web PlayStationEye Windows PC CL-Eye Platform Driver. Web LifeCam HD-3000.,. OS: Microsoft Windows 8.1 CPU: Intel Core i5 3.20Ghz : 8GB 2.1 LEGO 2.2 LEGO 4

13 (MPR202) 2.4 PlayStationEye 2.5 Oculus Rift DK2 2.6 LifeCam HD

14 , Web PlayStationEye ( 2.8)

15 2.2 HMD Oculus Rift DK2,. HMD ( 2.9). 2.9 HMD 7

16 cm, 15cm, 45cm, 15cm.. 27 cm, ( 2.8). 8. HMD

17 ( 7, 3 )., ,, 2 15cm,, 3,. 2.6 SSQ Kennedy,. 16 Simulator Sickness Questionnaire(SSQ) [4] [3] SSQ, TotalSocre SubScore Nausea( ), Oculomotor( ), Disorientation( ).. N Nausea, O Oculomotor, D Disorientaion

18 2.6 SSQ 2.1 SSQ [4] Nausea Oculomotor Disorientation TotalScore

19 , SSQ( 2.1).,,.,., HMD, SSQ, 5. 1, , ,, ,, HMD, 90 deg.,,. OHP,

20 ,, , 5 5,,,. 2,

21 2.8 ブロックモデル 図 2.15 ブロックパターン 3 図 2.16 ブロックパターン 4 図 2.17 ブロックパターン 5 図 2.18 ブロックパターン 6 13

22 2.8 ブロックモデル 図 2.19 ブロックパターン 7 図 2.20 図 2.21 ブロックパターン 9 図 2.22 ブロックパターン ブロックパターン 8

23 , (F (2, 18) = , p = ). Holm,,. VR,. 2.2 ( )

24 , 2.3, (F (2, 18) = , p =0.0147). Holm,. VR,. 16

25

26 , , (F (2, 11) = , p = )

27

28 OHP 1 (3 ), 4 ( 2.26).,,,.,.,

29 , , Holm., (F (2, 18) = , p =0.0308),

30

31 SSQ SSQ TotalScore SubScore Nausea( ), Oculomotor( ), Disorientation( ). Kenned et al.(1993),. TotalScore Nausea N, 9.54 NauseaScore. Oculomotor O, 7.58 OculomotorScore. Disorientaion, D, DisorientaionScore. 23

32 2.9 SSQTotalScore SSQTotalScore 2.6, TotalScore SSQTotalScore, 1., (F (2, 18) = , p = ). 2.6 SSQTotalScore

33 TotalScore Nausea( ) SSQSubScore Nausea 2.7, Nausea SSQSubSocre Nausea, 1. (F (2, 18) = , p =0.0145). Holm, 25

34 Nausea Nausea 26

35 2.9 Oculomotor( ) SSQSubScore Oculomotor 2.8, Oculomotor SSQSubSocre Oculomotor, 1. (F (2, 18) = , p =0.0337). Holm,. 2.8 Oculomotor

36 Oculomotor Disorientation( ) SSQSubScore Disorientation 2.9, Disorientaion SSQSubScore Disorientation, 1.,. (F (2, 18) =1.2233, p = ). 28

37 Disorientaion Disorientation 29

38 ,,.,.,.,,., 15 cm.,,.,,,.,., HMD 90 deg.,. SSQ TotalScore SubScore. 1 VR 90, 1 5. SubScore Nause( ), Nausea,. 30

39 2.10,,. SubScore Oculomotor( ),., 15cm,,. TotalScore SubScore Disorientaion( ),,. SubScore Disorientation( ),, Disorientation. 31

40 3 HMD, HMD (VR). VR,. 1, HMD., VR., VR,. VR,..,.,., SSQ,. 32

41 ,..,.. 33

42 [1] Pelz J, Hayhoe M, Loeber R The coordination of eye, head, and hand movements in a natural task, Experimental Brain Research, 139, pp (2001) [2],, 2011 [3],,,,,,,,,, 15, 41-44(2010) [4] Kennedy R S, Lane N E, Berbaum K S Simulator Sickness Questionnaire: An Enhanced Method for Quantifying Simulator Sickness, THe International Journal of Avaiation Psychology, 3, (1993) [5], (2002) [6],,,, The Virtual Reality Sociaty of Japan, 8, 57-64(2003) [7], VR, 8, 27-32(2003) [8] Ballard D H, Hayhoe M M, Pelz J B Memory representationsin natural tasks J Cogn Neurosci 7, 6882 [9] Abrams R, Meyer D, Kornblum S Eye-hand coordination: oculomotor control in rapid aimed limb movements J Exp Psychol Hum Percept Perform 15, (1990) [10] Land M F Predictable eye-head coordination during driving Nature 359, (1992) 34

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