Application Of Multitransforms For Lossy Image Representation

    Authors

    W. B. Mikhael;A. Ramaswamy

    Comments

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    Abbreviated Journal Title

    IEEE Trans. Circuits Syst. II-Analog Digit. Signal Process.

    Keywords

    Engineering, Electrical & Electronic

    Abstract

    The multitransform technique is applied for lossy image representation. The image is first divided into smaller non-overlapping submages. Each subimage is resolved into two dimensional (2-D) subsignals, which are then compactly represented in a particular transform domain. This leads to an efficient representation of the subimage by superimposing the dominant coefficients corresponding to each subsignal. An adaptive algorithm in conjunction with an optimization strategy are developed to minimize the difference between the original and the reconstructed subimage. Extensive simulations verify that, for a given number of retained coefficients, the combination of the DCT and Haar transforms yields a more compact representation than using DCT or Haar alone.

    Journal Title

    Ieee Transactions on Circuits and Systems Ii-Analog and Digital Signal Processing

    Volume

    41

    Issue/Number

    6

    Publication Date

    1-1-1994

    Document Type

    Letter

    Language

    English

    First Page

    431

    Last Page

    434

    WOS Identifier

    WOS:A1994NY86200012

    ISSN

    1057-7130

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