Insertion of an articulated human into a networked virtual environment

Pratt, David R.; Barham, Paul T.; Locke, John; Zyda, Michael; Eastman, Brad; Moore, Tonia; Biggers, K.; Douglass, R.; Jacobsen, Stephen C.; Hollick, M.J.; Granieri, John P.; Ko, Hyeong‐Seok; Badler, Norman I.

doi:10.1109/aihas.1994.390496

Cited by 19 publications

(9 citation statements)

References 3 publications

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“…As indicated by [9], the locomotion device provides a natural way for the user to navigate the virtual environment on foot. Different locomotion mechanisms have been developed over the years, including treadmill [5]- [7], [10], [11], pedaling device [8], [11], motion capture [12], [13], walking-in-place [14], and virtual perambulator [15].…”

Section: Previous Workmentioning

confidence: 99%

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An omnidirectional stroll-based virtual reality interface and its application on overhead crane training

Huang

2003

IEEE Trans. Multimedia

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Locomotion is an virtual reality interface that enables the user to walk inside the virtual environment in any directions over a long distance without actually leaving the physical device. In order to enable the user to freely navigate the virtual world and get fully immersed into the virtual environment accordingly, a locomotion device must fulfill the following two distinct requirements. First, it should allow the user to navigate an infinite distance within a limited area. Secondly, the user should not need to wear any tracking devices to detect his motion. This paper presents a locomotion mechanism called Omni-directional Ball-bearing Disc Platform (OBDP), which allows the user to walk naturally on it and thus to navigate the virtual environment. The gait sensing algorithm that simulates the user's posture based upon his footstep data collected from the OBDP is then elaborated. Followed with an omnidirectional stroll-based virtual reality system to integrate the OBDP with the gait sensing algorithm. Significantly, instead of using the three-dimensional (3-D) tracker, the OBDP adopts arrays of ball-bearing sensors on a disc to detect the pace. No other sensor, except the head tracker to detect the user's head rotation, is required on the user's body. Finally, a prototype of the overhead crane training simulator that fully explores the advantage of the OBDP is presented at the end of this paper along with the verification of the effectiveness of the presented gait sensing algorithm.

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Section: Previous Workmentioning

confidence: 99%

“…Darken [6] and Iwata [7] both proposed omnidirectional treadmills to relieve the directional constraint to the user. The Uniport, on the other hand, is a different type of locomotion device that uses a modified exercise-bike to simulate the user's pace [8].…”

Section: Introductionmentioning

confidence: 99%

An omnidirectional stroll-based virtual reality interface and its application on overhead crane training

Huang

2003

IEEE Trans. Multimedia

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“…Animating an articulated entity requires the technique to control highly redundant degrees of freedom [15,1,14,10,3,21]. To obtain realistic motion of complex character during a short period of time, copying is more effective than computational synthesis.…”

Section: Introductionmentioning

confidence: 99%

Processing Motion Capture Data to Achieve Positional Accuracy

Choi

Park

1999

Graphical Models and Image Processing

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“…Parts of the general problem and the need for representing simulated soldiers (referred to as Dismounted Infantry, or DIs), are covered in 21,5]. Although primarily driven by military requirements today, the general technologies for projecting real humans into, and representing simulated humans within, virtual environments, should be widely applicable in industry, e n tertainment and commerce in the near future.…”

Section: Human Motion In Dismentioning

confidence: 99%

Production and playback of human figure motion for visual simulation

Granieri

Crabtree²,

Badler³

1995

ACM Trans. Model. Comput. Simul.

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We describe a system for o -line production and real-time playback o f motion for articulated human gures in 3D virtual environments. The key notions are (1) the logical storage of full-body motion in posture graphs, which p r o vides a simple motion access method for playback, and (2) mapping the motions of higher DOF gures to lower DOF gures using slaving to provide human models at several levels of detail, both in geometry and articulation, for later playback. We present our system in the context of a simple problem: Animating human gures in a distributed simulation, using DIS protocols for communicating the human state information. We also discuss several related techniques for real-time animation of articulated gures in visual simulation.

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Insertion of an articulated human into a networked virtual environment

Cited by 19 publications

References 3 publications

An omnidirectional stroll-based virtual reality interface and its application on overhead crane training

An omnidirectional stroll-based virtual reality interface and its application on overhead crane training

Processing Motion Capture Data to Achieve Positional Accuracy

Production and playback of human figure motion for visual simulation

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