Abstract

We use the Viterbi decoding algorithm to resolve depth features beyond the nominal resolution limit of a volume holographic profilometry system. The formulation treats the truncated point-spread function as an intersymbol interference and uses surface constraints and transition constraints to reduce the computational complexity. A factor-of-5 improvement in resolution was obtained in our experimental demonstration.

© 2005 Optical Society of America

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Author Affiliations

Wenyang Sun, Arnab Sinha, George Barbastathis

Massachusetts Institute of Technology

Mark A. Neifeld

University of Arizona

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