2026-04-19T09:43:18Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1246792025-11-19T11:00:29Zcom_2072_1057col_2072_478821col_2072_478917

00925njm 22002777a 4500 dc Pérez Aviñoa, Marcos author Martínez-Herrero, Rosario author Vallmitjana i Rico, Santiago author Latorre-Carmona, Pedro author Juvells Prades, Ignacio author Carnicer González, Arturo author 2018-09-19T12:11:04Z 2020-09-13T05:10:21Z 2018-09-13 2018-09-19T12:11:04Z In this work we develop a partially-coherent spirally-polarized imaging system for generating gradual edge detection images. A rotating diffuser is used for producing illumination sources with tunable degree of coherence. Using a 4f configuration, the frequency content of the image is modified by means of a vortex half-wave retarder as a spatial filter. Accordingly, we analytically describe a spirally-polarized imaging system illuminated with a Gauss-Schell source using paraxial coherence-polarization theory. Numerical simulations and experimental results demonstrate the validity of our approach. We use a referenceless spatial content descriptor to assess the quality of the recorded images as a function of the coherence state of the source. Òptica de Fourier Coherència (Òptica) Polarització (Llum) Fourier optics Coherence (Optics) Polarization (Light) Partially-coherent spirally-polarized gradual-edge imaging