Two-Stage Template Matching Using Quantum-Limited Images

Thomas A Isberg; G.Michael Morris

doi:10.1117/12.948540

2 December 1988 Two-Stage Template Matching Using Quantum-Limited Images

Thomas A Isberg, G.Michael Morris

Proceedings Volume 0976, Statistical Optics; (1988) https://doi.org/10.1117/12.948540
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

Abstract

Two-stage template matching using quantum-limited images is investigated. A high-light-level input scene is searched using a small window function that is moved to various offsets within the input scene. The cross-correlation between the reference function and the input scene at a given offset is estimated by sampling the input scene using a small number of detected photoevents. The photon-limited correlation signal is used as a similarity criterion for comparing the input with the reference function. In the first stage, a small number of detected photoevents is used to find probable locations for the reference function. In the second stage, likely locations are examined using a sufficient number of detected photoevents to provide a recognition decision within a specified error. Results are presented for a simple inspection problem, and for scene matching in a satellite image.

Citation Download Citation

Thomas A Isberg and G.Michael Morris "Two-Stage Template Matching Using Quantum-Limited Images", Proc. SPIE 0976, Statistical Optics, (2 December 1988); https://doi.org/10.1117/12.948540

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