Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/62508
Title: Object based wavelet compression using coefficient selection
Authors: Zhao, Lifeng
Kassim, Ashraf 
Issue Date: 1999
Source: Zhao, Lifeng,Kassim, Ashraf (1999). Object based wavelet compression using coefficient selection. Proceedings of SPIE - The International Society for Optical Engineering 3653 (I) : 450-457. ScholarBank@NUS Repository.
Abstract: In this paper, we present a novel approach to code image regions of arbitrary shapes. The proposed algorithm combines a coefficient selection scheme with traditional wavelet compression for coding arbitrary regions and uses a shape adaptive embedded zerotree wavelet coding (SA-EZW) to quantize the selected coefficients. Since the shape information is implicitly encoded by the SA-EZW, our decoder can reconstruct the arbitrary region without separate shape coding. This makes the algorithm simple to implement and avoids the problem of contour coding. Our algorithm also provides a sufficient framework to address content-based scalability and improved coding efficiency as described by MPEG-4.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/62508
ISSN: 0277786X
Appears in Collections:Staff Publications

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