Detecting the direction of a signal on high-dimensional spheres: non-null and Le Cam optimality results
Sign Up to like & getrecommendations! Published in 2019 at "Probability Theory and Related Fields"
DOI: 10.1007/s00440-019-00937-x
Abstract: We consider one of the most important problems in directional statistics, namely the problem of testing the null hypothesis that the spike direction $${\pmb \theta }$$ θ of a Fisher–von Mises–Langevin distribution on the p… read more here.
Keywords: non null; direction; high dimensional; detecting direction ... See more keywords
Enhanced calibration for freeform surface misalignments in non-null interferometers by convolutional neural network.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.383938
Abstract: Most tested surface calibration methods in interferometers, such as the direct coefficients removing method, the sensitive matrix (SM) method, and deep neural network (DNN) calibration method, rely on Zernike coefficients. However, due to the inherent… read more here.
Keywords: non null; neural network; freeform surface; calibration ... See more keywords
Pixel MTF response effect on non-null interferometry.
Sign Up to like & getrecommendations! Published in 2021 at "Optics letters"
DOI: 10.1364/ol.432891
Abstract: The pixel modulation transfer function response degrades the contrast of non-null interferometric surface figure measurements. We experimentally quantify this effect for spatial frequencies ranging from 0 to 363 lp/mm (≈3.33 times the Nyquist limit). Our… read more here.
Keywords: interferometry; effect; mtf response; non null ... See more keywords