A hierarchical coder (HC) is constructed from a number of simple coders for image blocks arranged in order of increasing bit rate and reproduction quality. This paper discusses several aspects of hierarchical coders, including: a general description of the structure of a HC, its advantages and important design considerations, a discussion of how threshold selection can affect the performance of the coder through a simple example, and an introduction of a simple procedure for selecting optimal (in the rate distortion sense) decision thresholds which control the levels of the hierarchy.<>


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    Titel :

    Optimal threshold selection in hierarchical coders for images and video


    Beteiligte:
    Fatemi, S.H. (Autor:in) / Mersereau, R.M. (Autor:in) / Truong, K.K. (Autor:in)


    Erscheinungsdatum :

    01.01.1994


    Format / Umfang :

    407834 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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