Integrated Real-Time Calibration of Electromagnetic Tracking of User Motions for Engineering Applications in Virtual Environments

[+] Author and Article Information
Uma Jayaram, Roglenda Repp

School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164

J. Mech. Des 124(4), 623-632 (Nov 26, 2002) (10 pages) doi:10.1115/1.1517562 History: Received March 01, 2001; Online November 26, 2002
Copyright © 2002 by ASME
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A VR application demonstrating the need for accurate tracking
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COVE System and its components
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Overall methodology for calibration
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2D and 3D ambiguous regions
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Calibration grid with alternating cells
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Physical position cell with inverse distance vertex weights
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Rationale for the inverse coordinate difference algorithm
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Effect of cell distortion on interpolation
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Visualization of positional distortion field
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(a) Experimental setup (b) Calibration stand blowup
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Residual position error
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Residual orientation error
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Effect of cell transformation
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Search time vs grid density for 100 runs of 84 points




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