Extraction of three-dimensional shape information from a digital hologram

C. P. Mc Elhinney; J. Maycock; T. J. Naughton; J. B. McDonald; B. Javidi

doi:10.1117/12.617503

10 September 2005 Extraction of three-dimensional shape information from a digital hologram

C. P. Mc Elhinney, J. Maycock, T. J. Naughton, J. B. McDonald, B. Javidi

Proceedings Volume 5908, Optical Information Systems III; 590805 (2005) https://doi.org/10.1117/12.617503
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We present a technique to convert a digital hologram of a three-dimensional (3D) object into a cloud of surface points in 3D space. Two depth-from-defocus techniques are used to generate a depth map for a particular reconstructed perspective of the object encoded in the digital hologram. The Fresnel transform is used to effect defocus, and a histogram-based approach is used to determine the degree of defocus for each neighborhood of pixels. Our experiments involve simulated and real-world objects (captured using phase-shift digital interferometry). The technique could be used in registration and 3D object recognition applications.

Citation Download Citation

C. P. Mc Elhinney, J. Maycock, T. J. Naughton, J. B. McDonald, and B. Javidi "Extraction of three-dimensional shape information from a digital hologram", Proc. SPIE 5908, Optical Information Systems III, 590805 (10 September 2005); https://doi.org/10.1117/12.617503

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