NDLI: Finite element methods for real-time haptic feedback of soft-tissue models in virtual reality simulators

Content Provider	IEEE Xplore Digital Library
Author	Frank, A.O. Twombly, I.A. Barth, T.J. Smith, J.D.
Copyright Year	2001
Description	Author affiliation: Center for Bioinf., NASA Ames Res. Center, Moffett Field, CA, USA (Frank, A.O.)
Abstract	Applies the linear elastic finite element method to compute haptic force feedback and domain deformations of soft-tissue models for use in virtual reality simulators. Our results show that, for virtual object models of high-resolution 3D data (>10,000 nodes), haptic real-time computations (<500 Hz) are nor currently possible using traditional methods. Current research efforts are focused in the following areas: (1) efficient implementation of fully adaptive multi-resolution methods, and (2) multi-resolution methods with specialized basis functions to capture the singularity at the haptic interface (point loading). To achieve real-time computations, we propose parallel processing of a Jacobi pre-conditioned conjugate gradient method applied to a reduced system of equations resulting from surface domain decomposition. This can effectively be achieved using reconfigurable computing systems such as field programmable gate arrays (FPGAs), thereby providing a flexible solution that allows for new FPGA implementations as improved algorithms become available. The resulting soft-tissue simulation system would meet NASA Virtual Glovebox requirements and, at the same time, provide a generalized simulation engine for any immersive environment application, such as biomedical/surgical procedures or interactive scientific applications.
Sponsorship	IEEE Comput Soc Tech Committee on Visualization & Graphics
Starting Page	257
Ending Page	263
File Size	309974
Page Count	7
File Format	PDF
ISBN	0769509487
DOI	10.1109/VR.2001.913794
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-03-13
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Finite element methods Haptic interfaces Virtual reality Computational modeling Field programmable gate arrays Deformable models Force feedback Real time systems Concurrent computing Parallel processing
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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