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    Extraction and reconstruction of shape information from a digital hologram of three-dimensional objects


    McElhinney, Conor P. and Maycock, Jonathan and Hennelly, Bryan M. and Naughton, Thomas J. and McDonald, John and Javidi, Bahram (2006) Extraction and reconstruction of shape information from a digital hologram of three-dimensional objects. In: IMVIP 2006 : Proceedings of the Irish Machine Vision and Image Processing Conference 2006. Vision System Group, DCU, pp. 76-83. ISBN 9780955388507

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    Abstract

    We present a technique to convert a digital hologram of a three-dimensional object into a surface profile of the object. A depth-from-defocus technique is used to generate a depth map for a particular reconstructed perspective of the scene. The Fresnel transform is used to effect defocus. This depth map is then used to create an extended focused image of the object. Through the combination of the extended focused image and the depth map we are able to reconstruct a pseudo three-dimensional representation of the object. Our method produces depth maps of a significantly higher resolution than current autofocus methods. The technique could be used in registration and three-dimensional object recognition applications.

    Item Type: Book Section
    Keywords: digital holography; scene reconstruction; 3D shape measurement; three-dimensional image processin;
    Academic Unit: Faculty of Science and Engineering > Computer Science
    Item ID: 8303
    Depositing User: John McDonald
    Date Deposited: 09 Jun 2017 15:32
    Publisher: Vision System Group, DCU
    Refereed: Yes
    Funders: Enterprise Ireland, Science Foundation Ireland
    URI:

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