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Proceedings Paper

Scene Matching: Photon By Photon
Author(s): G. Michael Morris; T. A. Isberg; M. N. Wernick
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Paper Abstract

The spatial coordinates of detected photoevents in a given area convey information about the classical irradiance of the input scene. In this paper the effectiveness of photon-counting techniques for image recognition is discussed. A correlation signal is obtained by cross correlating a photon-limited input scene with a classical intensity reference function stored in computer memory. Laboratory experiments involving matched filtering, rotation-invariant image recognition, and image classification are reported. For many images it is found that only a sparse sampling of the input is required to obtain accurate recognition decisions, and the digital processing of the data is extremely efficient. Using available photon-counting detection systems, the total time required to detect, process, and make a recognition decision is typically on the order of tens of milliseconds. This work has obvious application in night vision, but it is also relevant to areas such as robot vision, vehicle guidance, radiological and nuclear imaging, and recognition of spectral signatures.

Paper Details

Date Published: 25 October 1989
PDF: 4 pages
Proc. SPIE 1134, Optical Pattern Recognition II, (25 October 1989); doi: 10.1117/12.961614
Show Author Affiliations
G. Michael Morris, University of Rochester (United States)
T. A. Isberg, University of Rochester (United States)
M. N. Wernick, University of Rochester (United States)

Published in SPIE Proceedings Vol. 1134:
Optical Pattern Recognition II
H. John Caulfield, Editor(s)

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