NDLI: Collision Detection and Force Response in Highly-Detailed Point-Based Hapto-Visual Virtual Environments

Content Provider	IEEE Xplore Digital Library
Author	El-Far, Naim R. Georganas, Nicolas D. Saddik, Abdulmotaleb El
Copyright Year	2007
Abstract	In this paper, we present a collision detection algorithm and a force response algorithm both for use in dynamic, rigid-bodied, highly-detailed, hapto-visual virtual environments in which the models' geometry is point-based. Our collision detection algorithm partitions the virtual space into a modified octree in a preprocessing step. At runtime, collision detection involves querying the octree for the octant where the end-effector currently is, as well as the indices of neighboring octants. After the world space is narrowed down to a volume of interest, the algorithm checks to see if the end-effector falls inside any axes-aligned bounding box that is centered at the model surface points that reside in the aforementioned volume of interest. A collision is defined as the haptic endeffector being found inside an axes-aligned bounding box centered at a model surface point. After a collision is detected, the force response algorithm calculates a force vector that starts at the end-effector's current position and ends at the model surface point closest to the end-effector. This is an adaptation of the common god/proxy-object approach but for use in point-based models.
Starting Page	15
Ending Page	22
File Size	326386
Page Count	8
File Format	PDF
ISBN	9780769530116
ISSN	15506525
DOI	10.1109/DS-RT.2007.29
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-22
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Virtual environment Haptic interfaces Rendering (computer graphics) Solid modeling Computer displays Computer graphics Detection algorithms Geometry Force control Partitioning algorithms
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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