2021-04-122000-01-010091328615602303WOS;000166413000015SCOPUS;2-s2.0-0034427694http://hdl.handle.net/10784/27929An alternative image multiplexing technique, employing a multiple-aperture pupil for each exposure, is presented. The aperture arrangement of the pupil is modified between exposures. A thick photo-refractive BSO crystal is used as recording material. The technique allows concentrating the spectral components of a pair of images selectively into isolated spots in the Fourier plane. Two applications are proposed, in image processing and optical metrology.enghttps://v2.sherpa.ac.uk/id/publication/issn/0091-3286info:eu-repo/semantics/articleCrystalsPhotorefractive materialsSpeckleFringe speckleHolography2021-04-12Tebaldi, M.Toro, L.A.Trivi, M.Bolognini, N.10.1117/1.1327496