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Color Image Compression with a Variable Block-Size Transform Scheme
Auteur(s)
Bracamonte, Javier
Ansorge, Michael
Pellandini, Fausto
Date de parution
1998-11-19
In
Proceedings of the International COST 254 Workshop on Intelligent Communication and Multimedia Terminals, COST (European Cooperation in the field of Scientific and Technical Research), 1998/254//7-10
Résumé
In a previous paper an adaptive transform-based coding method was introduced and used for the particular application of compressing the monochrome images of video conference sequences [1]. In the present paper the results of applying this adaptive scheme to compress still color images are presented. The basic principle of the algorithm is to encode those larger 2N x 2N -pixel regions featuring low image activity with a single 2N- point transform, and code high activity 2N x 2N- pixel regions with four N- point transform operations. Regarding the implementation issues, a strategy to reduce the computational complexity of the algorithm is also discussed.
Identifiants
Type de publication
journal article
