Isotropic and anisotropic edge enhancement using a lemon-star polarization dipole.
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DOI: 10.1364/ol.549873
Abstract: A spiral phase filter can perform a radial Hilbert transform (RHT) and is useful in isotropic edge enhancement. For selective edge enhancement, the inclusion of anisotropy warrants the filter to be replaced. In this Letter,… read more here.
Keywords: polarization; edge enhancement; lemon star; edge ... See more keywords