NDLI: Hybrid Feature Tracking and User Interaction for Markerless Augmented Reality

Content Provider	IEEE Xplore Digital Library
Author	Taehee Lee Hollerer, T.
Copyright Year	2008
Description	Author affiliation: California Univ., Los Angeles (Taehee Lee)
Abstract	We describe a novel markerless camera tracking approach and user interaction methodology for augmented reality (AR) on unprepared tabletop environments. We propose a real-time system architecture that combines two types of feature tracking methods. Distinctive image features of the scene are detected and tracked frame- to-frame by computing optical flow. In order to achieve real-time performance, multiple operations are processed in a multi-threaded manner for capturing a video frame, tracking features using optical flow, detecting distinctive invariant features, and rendering an output frame. We also introduce a user interaction for establishing a global coordinate system and for locating virtual objects in the AR environment. A user's bare hand is used for the user interface by estimating a camera pose relative to the user's outstretched hand. We evaluate the speed and accuracy of our hybrid feature tracking approach, and demonstrate a proof-of-concept application for enabling AR in unprepared tabletop environments using hands for interaction.
Starting Page	145
Ending Page	152
File Size	2781318
Page Count	8
File Format	PDF
ISBN	9781424419715
DOI	10.1109/VR.2008.4480766
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Augmented reality Cameras Optical computing Image motion analysis Real time systems Computer architecture Layout Optical detectors Computer vision Rendering (computer graphics) I.4.8 [Image Processing and Computer Vision]: Scene Analysis position and orientation tracking technology vision-based registration and tracking interaction techniques for MR/AR I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism¿Virtual Reality
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
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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