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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/10580

Title: Optimized two-party video chat with restored eye contact using graphics hardware
Authors: DUMONT, Maarten
ROGMANS, Sammy
MAESEN, Steven
BEKAERT, Philippe
Issue Date: 2010
Publisher: Springer
Citation: Proceedings of International Joint Conference on e-Business and Telecommunications. p. 358-372.
Series/Report: Communications in Computer and Information Science, 48
Abstract: We present a practical system prototype to convincingly restore eye contact between two video chat participants, with a minimal amount of constraints. The proposed six-fold camera setup is easily integrated into the monitor frame, and is used to interpolate an image as if its virtual camera captured the image through a transparent screen. The peer user has a large freedom of movement, resulting in system specifications that enable genuine practical usage. Our software framework thereby harnesses the powerful computational resources inside graphics hardware, and maximizes arithmetic intensity to achieve over real-time performance up to 42 frames per second for 800 ×600 resolution images. Furthermore, an optimal set of fine tuned parameters are presented, that optimizes the end-to-end performance of the application to achieve high subjective visual quality, and still allows for further algorithmic advancement without loosing its real-time capabilities.
URI: http://hdl.handle.net/1942/10580
DOI: 10.1007/978-3-642-05197-5
ISI #: 000280085100026
ISBN: 978-3-642-05196-8
Category: C1
Type: Proceedings Paper
Validation: ecoom, 2011
Appears in Collections: Research publications

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