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    A companding approach for nonuniform quantization of digital holograms of three-dimensional objects


    Shortt, Alison and Naughton, Thomas J. and Javidi, Bahram (2006) A companding approach for nonuniform quantization of digital holograms of three-dimensional objects. Optics Express, 14 (12). pp. 5129-5134. ISSN 1094-4087

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    Abstract

    We apply two novel nonuniform quantization techniques to digital holograms of three-dimensional real-world objects. Our companding approach, combines the efficiency of uniform quantization with the improved performance of nonuniform quantization. We show that the performance of companding techniques can be comparable with k-means clustering and a competitive neural network, while only requiring a single-pass processing step. The quantized holographic pixels are coded using lossless techniques for the calculation of compression ratio.

    Item Type: Article
    Keywords: Holography; Three-dimensional image processing; Data compression; Digital image processing;
    Academic Unit: Faculty of Science and Engineering > Computer Science
    Item ID: 8628
    Identification Number: https://doi.org/10.1364/OE.14.005129
    Depositing User: Thomas Naughton
    Date Deposited: 17 Aug 2017 15:34
    Journal or Publication Title: Optics Express
    Publisher: Optical Society of America
    Refereed: Yes
    Funders: Enterprise Ireland, Science Foundation Ireland
    URI:

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