1 November 1994 Symmetry measure and phase-matched filters in pattern recognition
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Abstract
The use of the diffraction phenomenon in pattern recognition is a well-established area in optical information processing. Typically the generation of a correlation peak by suitable filters is used to recognize a pattern. We introduce a symmetry measure for pattern recognition. It can be used for a wide class of filters, which we call phase-matched filters. Encoding techniques of diffractive optics allow its implementation as amplitude- or phase-encoded filters.
Stephan Teiwes, Frank Wyrowski, "Symmetry measure and phase-matched filters in pattern recognition," Optical Engineering 33(11), (1 November 1994). https://doi.org/10.1117/12.179884
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