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Jerry Isdale

Bio: Jerry Isdale is an academic researcher. The author has contributed to research in topics: Virtual machine & Computer animation. The author has an hindex of 2, co-authored 2 publications receiving 415 citations.

Papers
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DOI
01 Jan 2002
TL;DR: In this paper, content development is the design and construction of the objects and environment that create a virtual experience, including visual, auditory, interaction, and narrative aspects of the virtual environment.
Abstract: Content development is the design and construction of the objects and environment that create a virtual experience. This includes the visual, auditory, interaction, and narrative aspects of the virtual environment (VE). While this new medium of expression has much in common with other media (e.g., computer animation and games), it has its own peculiar aspects and distinctive features. These include real-time network communications, interactive spaces, multiuser interaction, avatars, and multimodal interfaces.

17 citations


Cited by
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Journal ArticleDOI
TL;DR: This display is used to evaluate the influence of focus cues on perceptual distortions, fusion failures, and fatigue and shows that when focus cues are correct or nearly correct, the time required to identify a stereoscopic stimulus is reduced, stereoacuity in a time-limited task is increased, and distortions in perceived depth are reduced.
Abstract: Three-dimensional (3D) displays have become important for many applications including vision research, operation of remote devices, medical imaging, surgical training, scientific visualization, virtual prototyping, and more. In many of these applications, it is important for the graphic image to create a faithful impression of the 3D structure of the portrayed object or scene. Unfortunately, 3D displays often yield distortions in perceived 3D structure compared with the percepts of the real scenes the displays depict. A likely cause of such distortions is the fact that computer displays present images on one surface. Thus, focus cues-accommodation and blur in the retinal image-specify the depth of the display rather than the depths in the depicted scene. Additionally, the uncoupling of vergence and accommodation required by 3D displays frequently reduces one's ability to fuse the binocular stimulus and causes discomfort and fatigue for the viewer. We have developed a novel 3D display that presents focus cues that are correct or nearly correct for the depicted scene. We used this display to evaluate the influence of focus cues on perceptual distortions, fusion failures, and fatigue. We show that when focus cues are correct or nearly correct, (1) the time required to identify a stereoscopic stimulus is reduced, (2) stereoacuity in a time-limited task is increased, (3) distortions in perceived depth are reduced, and (4) viewer fatigue and discomfort are reduced. We discuss the implications of this work for vision research and the design and use of displays.

1,459 citations

Journal ArticleDOI
Chris Dede1
02 Jan 2009-Science
TL;DR: Further studies are needed on the capabilities of immersive media for learning, on the instructional designs best suited to each type of immersive medium, and on the learning strengths and preferences these media develop in users.
Abstract: Immersion is the subjective impression that one is participating in a comprehensive, realistic experience. Interactive media now enable various degrees of digital immersion. The more a virtual immersive experience is based on design strategies that combine actional, symbolic, and sensory factors, the greater the participant's suspension of disbelief that she or he is "inside" a digitally enhanced setting. Studies have shown that immersion in a digital environment can enhance education in at least three ways: by allowing multiple perspectives, situated learning, and transfer. Further studies are needed on the capabilities of immersive media for learning, on the instructional designs best suited to each type of immersive medium, and on the learning strengths and preferences these media develop in users.

1,184 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present six areas of tourism in which VR may prove particularly valuable: planning and management, marketing, entertainment, education, accessibility, and heritage preservation, and numerous suggestions for future research are presented.

937 citations

Journal ArticleDOI
TL;DR: A literature review on the second research direction, which aims to capture the real 3D motion of the hand, which is a very challenging problem in the context of HCI.

901 citations

Journal ArticleDOI
TL;DR: This paper introduces the educational use of Web-based 3D technologies and highlights in particular VR features, and identifies constructivist learning as the pedagogical engine driving the construction of VRLE and discusses five constructivistlearning approaches.
Abstract: The use of animation and multimedia for learning is now further extended by the provision of entire Virtual Reality Learning Environments (VRLE). This highlights a shift in Web-based learning from a conventional multimedia to a more immersive, interactive, intuitive and exciting VR learning environment. VRLEs simulate the real world through the application of 3D models that initiates interaction, immersion and trigger the imagination of the learner. The question of good pedagogy and use of technology innovations comes into focus once again. Educators attempt to find theoretical guidelines or instructional principles that could assist them in developing and applying a novel VR learning environment intelligently. This paper introduces the educational use of Web-based 3D technologies and highlights in particular VR features. It then identifies constructivist learning as the pedagogical engine driving the construction of VRLE and discusses five constructivist learning approaches. Furthermore, the authors provide two case studies to investigate VRLEs for learning purposes. The authors conclude with formulating some guidelines for the effective use of VRLEs, including discussion of the limitations and implications for the future study of VRLEs.

620 citations