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Proceedings Paper

Evaluation of optimal synthetic discriminant filters on an application to angle determination
Author(s): Jean Figue; Philippe Refregier
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Paper Abstract

The performances of the OTSDF filters are illustrated on a particular application which consists in determining the angle and position of an airplane. For this purpose, different numerical experiments are presented. In particular, the influence of the noise characteristics is analyzed. The stability of the filters is investigated and simple regularization techniques are proposed. The robustness of correlation to different kinds of hidden parts is also studied. A real time numerical experimental system has been realized using different airplane scale models. We shall show the performances of the system with different kinds of perturbations. The correlation system has a hierarchical structure. At the first level, a rough estimation is performed, at the second level a fine angular determination is achieved and it is only at the third level that the type of the airplane is determined. This system allows to obtain 0.1 degree of mean precision in the absence of noise. This mean precision is still better than 1 degree with an input signal to noise ratio of about -22 dB. These results are obtained for 128 X 128 pixels input images.

Paper Details

Date Published: 9 November 1993
PDF: 12 pages
Proc. SPIE 2026, Photonics for Processors, Neural Networks, and Memories, (9 November 1993); doi: 10.1117/12.163610
Show Author Affiliations
Jean Figue, Thomson-CSF (France)
Philippe Refregier, Thomson-CSF (France)


Published in SPIE Proceedings Vol. 2026:
Photonics for Processors, Neural Networks, and Memories
Stephen T. Kowel; William J. Miceli; Joseph L. Horner; Bahram Javidi; Stephen T. Kowel; William J. Miceli, Editor(s)

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