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Proceedings Paper

Region-based scalable coding for video communications
Author(s): Ji Hyun Lee; Sung Ho Yoon; Winser E. Alexander
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Paper Abstract

This paper presents a region-based scalable coding technique that can be used in interactive transmission of images over networks. This method has a capability of near lossless coding for a specific region of interest (ROI), while the rest of the region is coded with a high quality lossy codec. The enhancement layers add refinement to the quality of the images that have been reconstructed using the basic layer of the intra frame. The proposed coding technique uses multiple quantizers with thresholds (QT) for layering and it creates a bit plane for each layer of both the intra and residual frames. The bit plane is then partitioned into sets of small areas to be coded independently. Run-length and entropy coding are applied to each of the sets to provide scalability for the entire image sets resulting in high picture quality in the end user-specified ROI. We tested this technique by applying it to various test image sequences and we consistently achieved a high level of performance.

Paper Details

Date Published: 4 January 2002
PDF: 11 pages
Proc. SPIE 4671, Visual Communications and Image Processing 2002, (4 January 2002); doi: 10.1117/12.453076
Show Author Affiliations
Ji Hyun Lee, North Carolina State Univ. (United States)
Sung Ho Yoon, North Carolina A&T State Univ. (United States)
Winser E. Alexander, North Carolina State Univ. (United States)

Published in SPIE Proceedings Vol. 4671:
Visual Communications and Image Processing 2002
C.-C. Jay Kuo, Editor(s)

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