Berlin 2001 – wissenschaftliches Programm
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Q: Quantenoptik
Q 21: Poster: Optical Applications
Q 21.6: Poster
Donnerstag, 5. April 2001, 12:30–15:00, AT2
Surface reconstruction algorithm from real, holographic images — •Dominik Giel1,2, Jens Bongartz1,2, and Peter Hering1,2 — 1Research center caesar, Friedensplatz 16, 53111 Bonn — 2Institute of Laser Medicine, University of Düsseldorf,Universitätsstraße 1, 40225 Düsseldorf
Pulsed Holography is a well established technique in particle physics and flow velocitmetry to record the spatial coordinates of small, fast-moving and/or short-lived objects like gas bubbles. In these applications, high precision is achieved by scanning the real image of the recorded hologram where regions of high light intensities correspond to object coordinates. However, this approach is not suitable for holograms of large opaque surfaces. We present a surface reconstruction algorithm based on the analysis of the real image volume. In conjunction with our holographic setup implementing a spatially modulated object beam, we demonstrate the feasibility of three-dimensional surface reconstruction for opaque surfaces. Special considerations are given to the measurement of living human faces, the application for which our setup is optimized .