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Instructor Contour Extraction and Overlay for Near-real Presence in e-Learning Systems

Topics: Av-Communication and Multimedia; Classroom Management; Collaborative Learning; Distance Education; e-Learning Hardware and Software; e-Learning Platforms, Portals; Immersive Learning; Immersive Learning and Multimedia Applications; Intelligent Learning and Teaching Systems; Intelligent Tutoring Systems; Smart Devices as Collaborative Learning Tools; Synchronous and Asynchronous Learning; Tools for Educational Communication and Collaboration; Virtual Learning Environments; Virtual Worlds

Authors: Ramkumar N ; Balaji Hariharan ; Uma Gopalakrishnan and Venkat Rangan

Affiliation: Amrita Vishwa Vidyapeetham University, India

ISBN: 978-989-758-179-3

Keyword(s): Enhancing Immersion, People Extraction, Visual Correlation, Contour Overlay, Virtual Presence.

Related Ontology Subjects/Areas/Topics: Artificial Intelligence and Decision Support Systems ; Av-Communication and Multimedia ; Classroom Management ; Collaboration and e-Services ; Collaborative Learning ; Computer-Supported Education ; Distance Education ; Domain Applications and Case Studies ; e-Business ; e-Learning ; e-Learning Hardware and Software ; e-Learning Platforms ; Enterprise Information Systems ; Immersive Learning ; Immersive Learning and Multimedia Applications ; Information Technologies Supporting Learning ; Intelligent Learning and Teaching Systems ; Intelligent Tutoring Systems ; Learning/Teaching Methodologies and Assessment ; Simulation and Modeling ; Simulation Tools and Platforms ; Smart Devices as Collaborative Learning Tools ; Social Context and Learning Environments ; Synchronous and Asynchronous Learning ; Ubiquitous Learning ; Virtual Learning Environments

Abstract: E-Learning technologies focus on methods to replicate entities such as white board, presentation screen and other teaching aids in remote classrooms. Often, a high detail video stream of the whiteboard or presentation screen (board-stream) is streamed to the remote classroom along with the instructor’s video stream. However, remote participants find it difficult to correlate between the two displayed streams to find out the area focused by the instructor‘s gestures such as finger pointing over the board. This paper deals with a method to overlay the instructor's contour-extracted frames from the instructor-stream over the board-stream for remote participants. Since the board-stream and instructor-stream have different camera perspectives, a transformation from the instructor’s video perspective to the board-stream perspective has to be made before overlay. The process includes finding the Homography-matrix, warping and overlay. Our performance results indicate that remote participants are able to discern the area focused by the instructor on the board with much greater accuracy and speed. (More)

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Paper citation in several formats:
N, R.; Hariharan, B.; Gopalakrishnan, U. and Rangan, V. (2016). Instructor Contour Extraction and Overlay for Near-real Presence in e-Learning Systems.In Proceedings of the 8th International Conference on Computer Supported Education - Volume 1: CSEDU, ISBN 978-989-758-179-3, pages 353-358. DOI: 10.5220/0005803303530358

@conference{csedu16,
author={Ramkumar N. and Balaji Hariharan. and Uma Gopalakrishnan. and Venkat Rangan.},
title={Instructor Contour Extraction and Overlay for Near-real Presence in e-Learning Systems},
booktitle={Proceedings of the 8th International Conference on Computer Supported Education - Volume 1: CSEDU,},
year={2016},
pages={353-358},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005803303530358},
isbn={978-989-758-179-3},
}

TY - CONF

JO - Proceedings of the 8th International Conference on Computer Supported Education - Volume 1: CSEDU,
TI - Instructor Contour Extraction and Overlay for Near-real Presence in e-Learning Systems
SN - 978-989-758-179-3
AU - N, R.
AU - Hariharan, B.
AU - Gopalakrishnan, U.
AU - Rangan, V.
PY - 2016
SP - 353
EP - 358
DO - 10.5220/0005803303530358

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