NDLI: GPU-based elastic-object deformation for enhancement of existing haptic applications

Content Provider	IEEE Xplore Digital Library
Author	Luciano, C.J. Banerjee, P.P. Rizzi, S.H.R.
Copyright Year	2007
Description	Author affiliation: Illinois Univ., Chicago (Luciano, C.J.)
Abstract	Most haptic libraries allow user to feel the resistance of a flexible virtual object by the implementation of a point-based collision detection algorithm and a spring-damper model. Even though the user can feel the deformation at the contact point, the graphics library renders a rigid geometry, causing a conflict of senses in the user's mind. In most cases, the CPU utilization is maximized to achieve the required 1-kHz haptic frame rate without leaving any additional resource to also deform the geometry, while on the other hand, the Graphics Processing Unit (GPU) is underutilized. This paper proposes a computationally inexpensive and efficient GPU-based methodology to significantly enhance user perception of large existing haptic applications without compromising the original haptic feedback. To the best of our knowledge, this is the first implemented algorithm that is able to maintain a graphics frame rate of approximately 60 Hz as well as a haptics frame rate of 1 Khz when deforming complex geometry of approximately 160K vertices. The implementation of the algorithm in a virtual reality neurosurgical simulator has been successful to handle, in real time, complex 3D isosurfaces created from medical MRI and CT images.
Starting Page	146
Ending Page	151
File Size	1756069
Page Count	6
File Format	PDF
ISBN	9781424411535
DOI	10.1109/COASE.2007.4341710
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Haptic interfaces Graphics Geometry Libraries Immune system Detection algorithms Rendering (computer graphics) Central Processing Unit Virtual reality Neurosurgery
Content Type	Text
Resource Type	Article

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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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