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Proceedings Paper

Vector quantisation compression of digital holograms of three-dimensional objects
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Paper Abstract

Digital holograms of real-world three-dimensional objects have been captured using phase-shift digital holography. These holograms have complex-valued pixels and a white noise appearance. Uniform and nonuniform scalar quantisation compression have already been applied to the hologram data with some success. Although each complex-valued pixel can itself be treated as a vector of length two, we extend the analysis using a multidimensional vector quantisation technique based on k-means clustering. This involves an a-by-b blockwise decomposition of the data and mapping it to an ab-dimensional space. Degradation due to lossy compression is measured in the reconstruction domain.

Paper Details

Date Published: 8 June 2005
PDF: 9 pages
Proc. SPIE 5827, Opto-Ireland 2005: Photonic Engineering, (8 June 2005); doi: 10.1117/12.605410
Show Author Affiliations
Alison E. Shortt, National Univ. of Ireland/Maynooth (Ireland)
Thomas J. Naughton, National Univ. of Ireland/Maynooth (Ireland)
Bahram Javidi, Univ. of Connecticut (United States)

Published in SPIE Proceedings Vol. 5827:
Opto-Ireland 2005: Photonic Engineering
Thomas J. Glynn; John T. Sheridan; Brian W. Bowe; Ronan F. O'Dowd; Gerard M. O'Connor; Aidan J.H. Flanagan; Gerard D. O'Sullivan; Gerald Byrne; Jonathan Magee, Editor(s)

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