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Optimal binary phase-only matched filters.

作者信息

Farn M W, Goodman J W

出版信息

Appl Opt. 1988 Nov 1;27(21):4431-7. doi: 10.1364/AO.27.004431.

DOI:10.1364/AO.27.004431
PMID:20539587
Abstract

Many spatial light modulators and computer-generated hologram techniques can very efficiently implement binary phase-only filters. At present, almost all binary phase-only filters are designed by first designing a matched spatial filter and then binarizing it. There is no theoretical basis to expect that such a filter will be optimal. This paper first develops a theory for optimal binary phase-only filters and then presents a numerical algorithm which designs the optimal binary phase-only matched filter for a given image. The filter is optimal in the matched filter sense of maximizing SNR at the output origin. Characteristics of the optimal filter compared to conventional binary phase-only filters are discussed.

摘要

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