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Proceedings Paper

Hybrid image processing instantiation: I. Optical subsystem
Author(s): Michael V. Morelli; Richard D. Juday; Stanley E. Monroe Jr.; Chiun-Hong Chien; Wann-Quang Li
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Paper Abstract

We describe the optical correlator subsystem of a hybrid vision system. The optical correlator has a Kopin SLM at the input plane and a fast analog nematic Boulder Nonlinear Systems SLM at the filter plane. Filters are computed to provide identification and pose estimation for various objects. Spatial non-uniformities in the filter SLM are particularly bothersome from an operational standpoint. Methods of measuring and accommodating for the non- uniformities are described. Correlation filters produce an initially coarse identification, and later filters are intended to refine the coarse estimate of the pose of the observed object. Certain image preprocessing operations and their results are discussed; these include the cross- correlation that result when a Laplacian of Gaussian image is used as input to the system whose filter has been computed for a Sobel edge-extracted version of the reference image.

Paper Details

Date Published: 8 July 1998
PDF: 8 pages
Proc. SPIE 3389, Hybrid Image and Signal Processing VI, (8 July 1998); doi: 10.1117/12.316537
Show Author Affiliations
Michael V. Morelli, NASA Johnson Space Ctr. (United States)
Richard D. Juday, NASA Johnson Space Ctr. (United States)
Stanley E. Monroe Jr., Lockheed Martin Space Mission Systems and Services (United States)
Chiun-Hong Chien, Hernandez Engineering (United States)
Wann-Quang Li, Lockheed Martin Space Mission Systems and Services (United States)

Published in SPIE Proceedings Vol. 3389:
Hybrid Image and Signal Processing VI
David P. Casasent; Andrew G. Tescher, Editor(s)

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