Telecommunications, Teleimmersion and

The 21st century idea of an extension of the telephone, one in which people feel they are together in a shared space, is often called teleimmersion or telexistence. Telexistence is the concept of overcoming limitations of time and space by presenting a sensation of existence in a virtual sense. Technology based on this concept enables users to meet and talk as if they share the same space and time, even if they are far apart from each other. This is the goal of the development of mutual telexistence communication systems, as a natural progression from the telephone to the telexistence-videophone. In this project, three types of telexistence communication systems are proposed for development: a telexistence communication booth for public facilities/offices; a telexistence-videophone for home use, and a wearable telexistence-videophone for personal use.

Preface
Acknowledgments
About the Authors
Two Ways of Mutual Telexistence: Telesar and Twister	p. 3
Introduction	p. 4
Short History of Telexistence	p. 5
Robotic Mutual Telexistence	p. 11
Mutual Telexistence using TWISTER: Telexistence Wide-angle Immersive STEReoscope	p. 15
Conclusion	p. 21
Acknowledgments	p. 22
References	p. 22
Teleimmersion and Visualization with the OptIPuter	p. 25
Introduction	p. 26
Building the OptIPuter: Taking Advantage of Accelerating Commodity Technologies	p. 28
OptIPuter Drivers: Earth Sciences and Biosciences	p. 34
Components of the OptIPuter	p. 38
Middleware for the OptIPuter: Quanta	p. 41
Teleimmersion and Visualization using the OptIPuter	p. 45
Teleimmersion and Visualization Requirements	p. 45
TeraVision	p. 50
TeraScope and LambdaRAM	p. 51
TeraScope on the OptIPuter	p. 53
TeraScope Visualization Tools	p. 55
Autostereo on Tiled OptIPuter Displays	p. 57
Conclusion	p. 61
Acknowledgments	p. 62
References	p. 63
Ray-Based Approach to Integrated 3D Visual Communication	p. 73
Introduction	p. 74
Basics on Ray-Based Approach	p. 76
Multi-Dimensional Data Space	p. 76
Overview of Spatial Representation System	p. 79
Compression of 4-D Data Space	p. 80
4-D Discrete Cosine Transform	p. 80
Improving Compression Efficiency	p. 80
Virtual Object Surface	p. 81
Experimental Results	p. 82
Video-Based Rendering	p. 85
Real-Time Interpolation of Light Rays	p. 85
System Configuration	p. 87
Experimental Results	p. 88
The Second Generation	p. 90
Integral Photography	p. 92
Using a Real-Time IP System	p. 92
Experimental Results	p. 94
Conclusion	p. 94
Acknowledgments	p. 96
References	p. 96
Immersive Electronic Books for Teaching Surgical Procedures	p. 99
Introduction	p. 99
Related Work	p. 103
Capture of the Live Procedure: Scene Acquisition and Reconstruction	p. 105
IVR for the ivrBook	p. 110
Creation and Use of the ivrBook	p. 113
Influence of Practical Considerations on Interface Research	p. 121
Future Directions	p. 124
Geometry Acquisition & Reconstruction	p. 124
Authoring & Pedagogic Design	p. 125
Display technologies	p. 128
Conclusion	p. 128
Acknowledgments	p. 129
References	p. 129
Wearable Computers and Ubiquitous Media Space	p. 133
From VR to MR	p. 133
Mobile and Wearable Computers	p. 136
Recording of Experience by Wearable Computers	p. 140
Wearable Computers for Open-Air Exhibition	p. 145
Physical Environment for Wearable Computers	p. 153
Position Sensing using RFID Tags	p. 156
Algorithm for position identification	p. 157
Communication path in PATIO	p. 159
Barrier-Free Applications of PATIO	p. 160
Conclusion	p. 161
Acknowledgments	p. 162
References	p. 163
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Telecommunications, Teleimmersion and Telexistence

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