Phase-only filtering based on sliced orthogonal nonlinear generalized decomposition

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Abstract:

The sliced orthogonal nonlinear generalized (SONG) decomposition and correlation have been demonstrated to be powerful tools in digital image processing and promising for nonlinear optical information processing. In this paper, we propose an optical phase-only filtering system based on SONG decomposition (PBS), in which the phase-only filtering of the target and the input scene binary slices are performed separately by pairs and then added together. We numerically show that the PBS has extremely high and sharp output correlation peak compared with other optical correlators. Furthermore, such a SONG decomposition based phase-only filtering naturally inherits the nature of SONG decomposition, which has strong robustness to additive Gaussian noise and substitutive noise, and also the high light efficiency of phase-only filtering. We demonstrate that the PBS may serve as an optimized optical correlation scheme, which is promising in nonlinear optical pattern recognition.

Document Type: Research Article

DOI: http://dx.doi.org/10.1078/0030-4026-00359

Affiliations: Harbin Institute of Technology, Department of Physics, Harbin 150001, P. R. China

Publication date: August 1, 2004

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