Virtual Reality Scientific and Technological Challenges (1995) / Chapter Skim
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Executive Summary
Executive Summary
Pages 1-10
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From page 1... ...
This report includes recommendations and extensive background material concerning systems popularly referred to by such terms as virtual reality,: cyberspace, virtual environments, teleoperation, telerobotics, augmented reality, and synthetic environments. In all such systems, the basic components are a human operator, a machine, and a human-machine interface linking the human operator to the machine.
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From page 2... ...
In recent years, synthetic environment systems, particularly virtual environment systems, have generated both great excitement and great confusion. These factors are evident in the extensive material published in the popular press; in the unrealistic expectations on the part of the public; in the inadequate terminology being used; in the deluge of conferences, articles, books, and demonstrations occurring; in the difficulties being experienced in communicating across disciplinary boundaries even by individuals whose professional work lies within the domain of synthetic environment systems; and in the frenetic pace at which most of the individuals concerned with synthetic environments are working.
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This is due primarily to our judgment that successful development and application of SE systems depends on an entire matrix of interrelated factors. We nevertheless feel that it is important to stress the crucial need for improved hardware technologies to enable development of improved interface devices and improved computer generation of multimodal images.
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development of improved understanding of possible deleterious effects of spending substantial portions of time in synthetic environments. Technology Despite the enthusiasm and the "hype" surrounding the SE field, there is a substantial gap between the technology that is available and the technology that is needed to realize the potential of SE systems envisioned in the various application domains.
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From page 5... ...
Hardware requirements for virtual environments include very large physical memories, multiple high-performance scalar processors, highbandwidth mass storage devices, and high-speed interface ports for various input and output peripherals. In the committee's judgment, commercial market forces, if they continue to grow at the current rate, will probably be sufficient to support the needed development.
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Such communication delays can result in degraded or unstable teleoperator performance. Improved teleoperator systems require improved control algorithms and methods for constructing and using predictive displays and for realizing effective supervisory control techniques as strategies for combatting communication time delays.
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Developers of SE systems should conduct evaluations using a variety of approaches throughout the development process, and the federal government should therefore encourage the developers whose work it supports to include a comprehensive evaluation plan in the design stages of their research and development projects. The federal government should also help coordinate the development of standardized testing procedures for use across studies, systems, and laboratories, particularly in areas in which the private sector has not been active.
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Funding could be provided jointly by both the federal government and the private sector. Third, it might be useful for some federal agencies and offices to explore the use of synthetic environment technology to meet their own administrative and program needs.
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Overall, the committee believes that synthetic environment systems have great potential for helping to satisfy various societal needs and stimulating advances in some important areas of science and technology. In pursuing the committee's recommendations for research and development, the federal government has an opportunity to make important contributions to the development of this exciting new field.
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