Optimal correlation with ternary phase-amplitude filters in a binary discrimination tree

David L. Calloway

doi:10.1117/12.160287

25 October 1993 Optimal correlation with ternary phase-amplitude filters in a binary discrimination tree

David L. Calloway

Proceedings Volume 1959, Optical Pattern Recognition IV; (1993) https://doi.org/10.1117/12.160287
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

Ternary Phase-Amplitude Filters (TPAFs) have several advantages in optical pattern recognition applications. These advantages include effective signal-to-noise and signal-to- clutter translation-invariant discrimination ability, relatively high optical efficiency, and implicitly efficient storage of the filters. However, TPAFs are sensitive to changes in scale and rotation. Thus, relatively large numbers of filters must be applied to uniquely identify a particular target image. This paper proposes the use of binary discrimination tree to significantly reduce the number of filter applications required to identify a target image in a real-time target recognition environment.

Citation Download Citation

David L. Calloway "Optimal correlation with ternary phase-amplitude filters in a binary discrimination tree", Proc. SPIE 1959, Optical Pattern Recognition IV, (25 October 1993); https://doi.org/10.1117/12.160287

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KEYWORDS

Image filtering

Optical filters

Signal to noise ratio

Composites

Electronic filtering

Optical pattern recognition

Target recognition

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