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Proceedings Paper

Virtual media (Vmedia) access protocol and its application in interactive image browsing
Author(s): Jin Li; Hong-Hui Sun
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Paper Abstract

In this work, we propose a virtual media (Vmedia) access protocol for interactive image browsing over the Internet. Vmedia is a multimedia communication protocol in a server- client environment. It enables the access and delivery of segments of media, and manages the delivered media segments with a local Vmedia cache. An interactive JPEG 2000 image browser is implemented with Vmedia. The image is compressed with JPEG 2000 into one single bitstream and put on the server. In the interactive browsing process, the user specifies a region of interest (ROI) with a certain spatial and resolution constraint. The Vmedia browser only downloads the media segments covering the current ROI, and the download is performed in a progressive fashion so that a coarse view of the ROI can be rendered very quickly and then gradually refined as more and more bits arrive. In the case of switch of ROI, e.g, zooming in/out or panning around, the Vmedia browser will use existing media segments in cache to quickly render a coarse view of the new ROI, and in the same time, request a new set of media segments corresponding to the updated ROI. Vmedia greatly improves the browsing experience of large images over slow networks.

Paper Details

Date Published: 22 December 2000
PDF: 12 pages
Proc. SPIE 4312, Multimedia Computing and Networking 2001, (22 December 2000); doi: 10.1117/12.410901
Show Author Affiliations
Jin Li, Microsoft Research China (United States)
Hong-Hui Sun, Microsoft Research China (China)


Published in SPIE Proceedings Vol. 4312:
Multimedia Computing and Networking 2001
Wu-chi Feng; Martin G. Kienzle, Editor(s)

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