A Region-Based Representation of Images in MARS

Authors:
Sergio D. Servetto;Yong Rui;Kannan Ramchandran;Thomas S. Huang
Affiliations:
Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801;Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801;Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801;Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801
Venue:
Journal of VLSI Signal Processing Systems - special issue on multimedia signal processing
Year:
1998

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Abstract

We study the problem of representing images within a multimedia Database Management System (DBMS), in order to support fast retrieval operationswithout compromising storage efficiency. To achieve this goal, wepropose new image coding techniques which combine a waveletrepresentation, embedded coding of the wavelet coefficients, andsegmentation of image-domain regions in the wavelet domain. A bitstreamis generated in which each image region is encoded independently of otherregions, without having to explicitly store information describingthe regions. Simulation results show that our proposed algorithmsachieve coding performance which compares favorably, both perceptually andobjectively, to that achieved using state-of-the-art image/video codingtechniques while additionally providing region-based support.