Region-based encoding techniques have been long investigated for the compression of still images and video sequences and have recently gained much popularity, as testified by the object-based nature of the MPEG-4 video coding standard. This work aims at analyzing costs and advantages of implementing such an approach by shape-adaptive wavelet transform and shape-adaptive SPIHT. The analysis of several performance measures in a number of experiments confirm the potential of wavelet-based region-based approach, and provide insight about what performance gains and losses can be expected in various operative conditions.


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    Title :

    Costs and advantages of shape-adaptive wavelet transform for region-based image coding


    Contributors:
    Cagnazzo, M. (author) / Poggi, G. (author) / Verdoliva, L. (author)


    Publication date :

    2005-01-01


    Size :

    186945 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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