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Overlapped Fourier coding for optical aberration removal. [PDF]
Opt Express, 2014 We present an imaging procedure that simultaneously optimizes a camera's resolution and retrieves a sample's phase over a sequence of snapshots. The technique, termed overlapped Fourier coding (OFC), first digitally pans a small aperture across a camera ...
Horstmeyer R +4 more
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Optical Aberration Calibration and Correction of Photographic System Based on Wavefront Coding [PDF]
Sensors, 2021 The image deconvolution technique can recover potential sharp images from blurred images affected by aberrations. Obtaining the point spread function (PSF) of the imaging system accurately is a prerequisite for robust deconvolution.
Chuanwei Yao, Yibing Shen
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Analysis of polarization aberrations of the off-axis pupil freeform optical system [PDF]
iScienceSummary: Freeform surfaces are widely used in off-axis pupil optical systems with large apertures, wide fields of view, and long focal lengths. Polarization effects in such systems significantly influence imaging quality.
Chenjie Gong +5 more
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Optical mechanism for aberration of starlight [PDF]
Journal of the Optical Society of America A, 2012 We present a physical-optics based theory of the physical mechanism for aberration of starlight. We apply non-relativistic and relativistic theories for wavefront image formation and include the effects of optically transmitting media within the sensor.
Robert A. Woodruff
openaire +5 more sources
APL Photonics, 2019 Digital aberration measurement and removal play a prominent role in computational imaging platforms aimed at achieving simple and compact optical arrangements.
Pengming Song +5 more
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Compact Optical Visual Magnification System with a Wide Field of View [PDF]
SensorsA new concept for designing a visual magnification system is introduced. In this concept, apart from the conventional objective and the eyepiece group lenses in the system, an additional Power-Corrector (PC) group of lenses is introduced in the optical ...
Uri Milman, Jacob Kaufmann, Yoel Arieli
doaj +2 more sources
Tunable liquid crystal cylindrical micro-optical array for aberration compensation.
Optics Express, 2015 A tunable aberration compensation device for rectangular micro-optical systems is proposed and demonstrated. This device, which is based in nematic liquid crystal and a micro-electrode structure, forms gradients in the index of refraction as a function ...
J. F. Algorri +4 more
semanticscholar +2 more sources
Fast Two-step Blind Optical Aberration Correction [PDF]
European Conference on Computer Vision, 2022 . The optics of any camera degrades the sharpness of photographs, which is a key visual quality criterion. This degradation is characterized by the point-spread function (PSF), which depends on the wavelengths of light and is variable across the imaging ...
Thomas Eboli, J. Morel, G. Facciolo
semanticscholar +1 more source
Universal and Flexible Optical Aberration Correction Using Deep-Prior Based Deconvolution [PDF]
IEEE International Conference on Computer Vision, 2021 High quality imaging usually requires bulky and expensive lenses to compensate geometric and chromatic aberrations. This poses high constraints on the optical hash or low cost applications.
Xiu Li +4 more
semanticscholar +1 more source
Analysis of polarization characteristics of freeform surface optical system [PDF]
ITM Web of Conferences, 2022 Freeform surfaces are widely used in off-axis optical systems with large aperture, large field of view, and long focal length. The polarization effect caused by the non-rotationally symmetrical shape has an impact on the system’s polarization imaging ...
Zhang Yilan, Shi Haodong, Jiang Huilin
doaj +1 more source