Results 11 to 20 of about 10,528,066 (300)
Point Spread Function Estimation for a Terahertz Imaging System [PDF]
EURASIP Journal on Advances in Signal Processing, 2010 We present a method for estimating the point spread function of a terahertz imaging system designed to operate in reflection mode. The method is based on imaging phantoms with known geometry, which have patterns with sharp edges at all orientations. The
Popescu DanC, Hellicar AndrewD
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Corollaries of Point Spread Function with Asymmetric Apodization [PDF]
International Journal of Optics, 2016 Primary energy based corollaries of point spread function with asymmetric apodization using complex pupil function have been studied in the case of three-zone aperture.
Naresh Kumar Reddy Andra +2 more
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The Anisoplanatic Point‐Spread Function in Adaptive Optics [PDF]
Publications of the Astronomical Society of the Pacific, 2006 26 pages, 7 ...
Britton, M. C.
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Measurement of the point-spread function of a noisy imaging system [PDF]
, 2007 The averaged point-spread function (PSF) estimation of an image acquisition system is important for many computer vision applications, including edge detection and depth from defocus. The paper compares several mathematical models of the PSF and presents
Richard C Staunton +5 more
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Half-ring point spread functions
Optics Letters, 2020 We applied point spread function engineering to design an optimized diffuser producing half-ring irradiance patterns satisfying two objectives: reduced peak irradiance in the focal plane, and high fidelity of the reconstructed image. Applications of these optical elements may include sensor protection or reversible diffusers. Experimental and numerical
Jacob H. Wirth +2 more
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Generation of Arbitrary Longitudinal Polarization Vortices by Pupil Function Manipulation
Advanced Photonics Research, 2021 The properties of optical vortex provide new insights into a wide range of optical and physical phenomena, giving rise to numerous applications in multiple disciplines. Notably, as much as the associated technologies have become increasingly flexible, it
Xin Liu +6 more
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Apodization and the point-spread autocorrelation function [PDF]
Applied Optics, 1997 A novel function, the point-spread autocorrelation function (PSAF), which is closely related to the point-spread function, of a high numerical aperture microscope objective is introduced. The function is both experimentally measured and theoretically modeled for various apodization conditions.
Müller, M., Brakenhoff, G.J.
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Point spread function modelling for wide-field small-aperture telescopes with a denoising autoencoder [PDF]
, 2020 The point spread function reflects the state of an optical telescope and it is important for the design of data post-processing methods. For wide-field small-aperture telescopes, the point spread function is hard to model because it is affected by many ...
Cai, Dongmei +4 more
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Eddy-Current Sensors with Asymmetrical Point Spread Function
Sensors, 2016 This paper concerns a special type of eddy-current sensor in the form of inductive loops. Such sensors are applied in the measuring systems classifying road vehicles.
Janusz Gajda, Marek Stencel
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New algorithms for adaptive optics point-spread function reconstruction [PDF]
, 2006 Accepted for publication in A&A; 6 pages, 3 figuresInternational audienceContext. The knowledge of the point-spread function compensated by adaptive optics is of prime importance in several image restoration techniques such as deconvolution and ...
Gendron, E +7 more
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