Authors:
Ramkumar N
;
Balaji Hariharan
;
Uma Gopalakrishnan
and
Venkat Rangan
Affiliation:
Amrita Vishwa Vidyapeetham University, India
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 participant
s are able to discern the area focused by the instructor on the board with much greater accuracy and speed.
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