Eye Mark Pointer in Immersive Projection Display

1
Eye Mark Pointer in Immersive Projection Display

• K. Asai(1), N. Osawa(1), Y. Y. Sugimoto(1),
• S. Yamazaki(2), M. Samejima(2), and T. Tanimae(2)
• (1) National Institute of Multimedia Education,
  JAPAN
• (2) Solidray Co., Ltd., JAPAN

2
Outline

• Background
• TEELeX (Immersive Projection Display)
• System Configuration
• Experiment for Evaluation
• Conclusion and Future Work

3
Background

• Educational Applications
• Collaborative work
• Learning material for physical education

• Quick Pointing of Objects far away from the User
• Applicable to the Immersive Projection Display

4
Features of TEELeX

• Cave-like System with 5.5 Screens
• Bright Images
• LCD projector with 1000 ANSI lm
• Light Stereo Glasses
• Circular Polarization Method

Multi-Screen Display
Eye Tracking System
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System Configuration
(SGI ONYX2)
Polhemus FASTRAK
ASL 501
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Principle
Magnetic Sensor
Eye Camera
Visible Light
Infrared Light
Pupil
Visor
Polarizing Filter
Corneal Reflection
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Accuracy

• Eye Tracking System
• (x,y) position based on the head
• 5035 deg (lt1 deg)
• Head Tracker
• (x,y,z) position, pitch, yaw roll
• 0.8mm(rms), 0.15deg(rms)

17.5cm at a distance of 10m
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Geometry

• Eye Tracking System
• (255,255) on the screen
• 12mm12mm for a grid
• Head Tracker
• Center on the floor as an orientation

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Pointing Process
Head Tracker
Display
Observer
Color Change
HT-Filter Offset
Intersection
ET-Filter
Eye Vector
Pointer
Sphere Cursor
Eye Tracking System
Eye
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Experiment for Evaluation

• Characteristics
• Comparison of Eye Mark Pointer and Joystick
• Subjects
• 6 Adults with normal vision
• Stimuli
• Green spheres on black background
• Change to yellow
• Red cursor

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Procedure

• Calibration
• Eliminate 10 Spheres
• Eye Mark Pointer
• Joystick
• 5 Cycles Varying with Diameter of Spheres (80,
  70, 60, 50, and 40 cm).

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Constraints

• In the distance range of 10m and the angular
  range of 12080deg
• Eye Mark Pointer
• 0.5 sec smoothing filter
• Joystick
• Arrow Cursor
• Hand-lever and finger-lever

10m
120deg
80deg
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Overview of Experiments

• Video

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Experimental Results
Eye Mark Pointer
Joystick
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Average Time vs. Visible Size
Time sec
Angle rad
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Questionnaire
Better
Left Eye Pointer Right Joystick
Fatigue
Training
Availability
Operability
Cursor Motion
Responsiveness
Perspective View
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Discussion

• Pointing with the Eye Mark Pointer is better than
  that with the Joystick.
• No need to make practices
• Difficult to recognize the perspective view for
  the far away objects and select them

The same problem would occur as the ray-casting
in selecting the small objects.
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Related Works

• Eye-Gaze Use for HCI
• Pastoor, et al., 1999
• J. P. Rolland, et al., 1998
• K. Iwamoto, et al., 1995
• R. J. K. Jacob, 1993

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Future Work

• Compact Design
• Light Weight
• Easy Operation
• Quick calibration method
• Compare the other methods
• Beam Stick (ray-casting)
• Manipulation of the selected objects
• Zoom-in and out
• Move Objects

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Conclusions

• Develop the Eye Mark Pointer used in the
  Immersive Projection Display
• Available for pointing at objects from the user
  over visible angle of 0.1rad

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Thank you!

• Contact
• Email asai_at_nime.ac.jp
• http //www.nime.ac.jp