2 ' $0 3 - JEITA

1

T. Kiryu, Niigata University March 9, 20072007



2



Autonomic Nervous Systemfor Continuing Physical Activity

Motivation for Exercise

Proprioception

Brain

Muscles

Visual System

Somatic Sensors

Vestibular System

for Controlling ExerciseNeuromuscular system

Motor Command

Energy Metabolismfor Continuing Exercise

time-scale

long

short


IntroductionIntroduction

TV

Pros Cons

etc

3



10sec

10msec

property

property


Rating of ImageRating of Image

=

, ,

4



Rating of Personal FeaturesRating of Personal Features

10sec

10msec


time [ sec ]

[sec]

5



( ( ))

Global Motion VectorGlobal Motion VectorLocal Motion VectorLocal Motion Vector

post frame

current framey

x

cameratilt

pan

Block matching method x

y

motion of cameramotion of camera

zoom

local motion in a screenlocal motion in a screen

tilt

distant view

Bottom up approach

right/left

up/down


time [sec]

[magnific

ation]

Fre

quency

[Hz]

[pix

el]

Fre

quency

[Hz]

[pix

el]

Fre

quency

[Hz]

mountain-bikemountain-bike

zoom

pan

tilt

GMV

6



(1,1)

(1,2)

(1,3)

(1,4)

(1,5)

(2,1)

(2,2)

(2,3)

(2,4)

(2,5)

(3,1)

(3,2)

(3,3)

(3,4)

(3,5)

(4,1)

(4,2)

(4,3)

(4,4)

(4,5)

(5,1)

(5,2)

(5,3)

(5,4)

(5,5)

time [sec] mountain-bikemountain-bike| correlation coefficient | 0.7

Pan (GMV)Pan (GMV) Right/Left (LMV)Right/Left (LMV)


HFRES HFRR( , RR HF )

HF : 0.15 0.45 [Hz]

LFBP LFRR ( RR LF )

LF : 0.04 0.15 [Hz] [ 4 ]

by 3

RR

tt tg,BP tg,RR ))

tg,BP : LF: LFBPBP

tg,RR : LF: LFRRRR

(SSI)

HF 0

LF 20%

rest … 100%

Sig

nal In

tensity

Sig

nal In

tensity

1.8

1.4

1.0

0.6

0.2

1.8

1.4

1.0

0.6

0.20 20 40 60 80 100 120

0 20 40 60 80 100 120

Time [sec]

HFHFRESRES HFHFRRRR

LFLFBPBP LFLFRRRR

tt

SSISSI

HFRES

LFBP

120%

rest 100%rest 100%

rest 100%rest 100%

80%

[ 4 ] “ ” vol.28, no.4, pp.32-36, 1998.

7



5 [min] 10 [min] 5 [min]

20 [min]

Q R1 R2 QT

T1 T2 T3 T4 T5

Q :questionnaire , R rest , T task

2 [min]

15 21.9±0.8870 [inch]

1.7 [m]AB-601G

JENTOW7700

TR-755T

SKA2000 SKINOS

P-EOG17° 22°


tg 10

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

sig

nal in

tensity

Cybersickness group

non-Cybersickness group

J J

J

J J

J J

J J

J J

J

H

H H

H

H

H H

H

H

H H

H

F

F F

F

F

F F

F

F

F

F F

3

3

3

3 3

3

3 3

3

3

3 3

1-1

0

10-2

0

20-3

0

30-4

0

40-5

0

50-6

0

60-7

0

70-8

0

80-9

0

90-1

00

100-1

10

110-1

20

0

1

2

3

4

5

6

7

8

9

10

time [sec]

up to T1

J up to T2

H up to T3

F up to T4

3 up to T5

5 [min] 2 [min]

10 [min]

Q questionnaire , R rest

T* task (Mountainbike image)

T1 T2 T3 T4 T5R RQ Q

5 [min] 2 [min]

10 [min]

Q questionnaire , R rest

T* task (Mountainbike image)

T1 T2 T3 T4 T5R RQ Q

T1 T2 T3 T4 T5

March 2006

LF/HF

15 subjects

9 subjects

6 subjects

8



zoomzoom panpan tilttilt

N=96 N=180 N=264

1510

53

0.01

0.05

0.1

0.51

Fre

quency

[Hz]

N=1167 N=585 N=923

1510

53

0.01

0.05

0.1

0.51

Fre

quency

[Hz]


31

0.0

115

mountain-bike (65-68[sec])

bobsleigh (55-58 [sec])

bike race (38-41[sec])

mountain-bike …0.3-2.5 [Hz]

bobsleigh …0.3-5 [Hz](zoom), 4-11[Hz]

bike race …2.5-8 [Hz]

median

mean


N=859- N=482 N=247

1510

53

0.01

0.05

0.1

0.51

Fre

quency

[Hz]

65 6866 67 65 6866 67 65 6866 67 [sec][sec][sec] 38 4139 40 38 4139 40 38 4139 40 [sec][sec][sec]

55 5856 57 55 5856 57 55 5856 57 [sec][sec][sec]

GMV


number of triggerpoints per minute

number of unpleasant score

bike race

mountain bike

bobsleigh

(LFBP

, HFRES

); (LFRR

, HFRR

)

(LFBP

, HFRES

); (LFBP

, HFRR

)

(LFBP, HFRES); (LFRR, HFRES)

BP , RES:

RR RR

(LFBP, HFRR); (LFRR, HFRES)

“

", D, Vol. J89-D,No. 3, pp. 576-583, 2006.

11 subjects

9



time [ sec ]

[sec]


0.35-1.0Hz

pan

10



pan

10 task 12

0

400

-400

0

20 40 60 80 1000 120time [sec]

20 40 60 80 1000 120

0

-40

40

am

plit

ude [m

v]

motion [

pix

el ]

time [sec]


9

1

|

10

10

|

20

20

|

30

30

|

40

40

|

50

50

|

60

60

|

70

70

|

80

80

|

90

90

|

100

100

|

110

110

|

120

time [sec]

Nu

mb

er

of tg

0

2

4

6

8

T2

T3

T4

T5

T1

1

|

10

10

|

20

20

|

30

30

|

40

40

|

50

50

|

60

60

|

70

70

|

80

80

|

90

90

|

100

100

|

110

110

|

120

time [sec]

Nu

mb

er

of tg

0

2

4

6

8

T2

T3

T4

T5

T1

T2

T3

T4

T5

T1

1

|

10

10

|

20

20

|

30

30

|

40

40

|

50

50

|

60

60

|

70

70

|

80

80

|

90

90

|

100

100

|

110

110

|

120time [sec]

T2

T3

T4

T5

T1

T2

T3

T4

T5

T1

80 90

tg 80 90

15 subjects9 subjects

11



time [sec]

Inte

nsity o

f S

ickn

ess trigger components

accumulated components

negative

positive

Cybersickness


priority

External

Factors

Internal Factors

12




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