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- W4379014773 abstract "Various approaches to implementing optical analog differentiation have been studied extensively and applied in edge-based image processing. Here, we report a topological optical differentiation scheme based on complex amplitude filtering, i.e., amplitude and spiral phase modulation in Fourier space. The isotropic and anisotropic multiple-order differentiation operations are demonstrated both theoretically and experimentally. Meanwhile, we also achieve multiline edge detection corresponding to the differential order for the amplitude and phase objects. This proof-of-principle work could open up new avenues for engineering a nanophotonic differentiator and realizing a more compact image-processing system." @default.
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- W4379014773 date "2023-06-29" @default.
- W4379014773 modified "2023-10-10" @default.
- W4379014773 title "Topological spatial differentiation via complex amplitude filtering in Fourier space" @default.
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- W4379014773 doi "https://doi.org/10.1364/ol.492568" @default.
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