Results 31 to 40 of about 1,598,929 (274)

Video-rate 3D Particle Tracking with Extended Depth-of-field in Thick Biological Samples [PDF]

, 2017
We present a single-aperture 3D particle localisation and tracking technique with a vastly increased depth-of-field without compromising optical resolution and throughput. Flow measurements in a FEP capillary and a zebrafish blood vessel are demonstrated
Carles, Guillem, Harvey, Andrew R., Taylor, Jonathan, Zammit, Paul, Zhou, Yongzhuang, Zickus, Vytautas   +5 more
core   +1 more source

Time-sequential Pipelined Imaging with Wavefront Coding and Super Resolution [PDF]

, 2017
Wavefront coding has long offered the prospect of mitigating optical aberrations and extended depth of field, but image quality and noise performance are inevitably reduced. We report on progress in the use of agile encoding and pipelined fusion of image
Bradburn, Downing, Dowski, Muyo, Prasad, Vettenburg, Zammit   +6 more
core   +1 more source

Designing high-efficiency extended depth-of-focus metalens via topology-shape optimization

Nanophotonics, 2022
Longitudinal optical field modulation is of critical importance in a wide range of applications, including optical imaging, spectroscopy, and optical manipulation.
Zheng Yuhan, Xu Mingfeng, Pu Mingbo, Zhang Fei, Sang Di, Guo Yinghui, Li Xiong, Ma Xiaoliang, Luo Xiangang   +8 more
doaj   +1 more source

Test of the Practicality and Feasibility of EDoF-Empowered Image Sensors for Long-Range Biometrics

Sensors, 2016
For many practical applications of image sensors, how to extend the depth-of-field (DoF) is an important research topic; if successfully implemented, it could be beneficial in various applications, from photography to biometrics. In this work, we want to
Sheng-Hsun Hsieh, Yung-Hui Li, Chung-Hao Tien   +2 more
doaj   +1 more source

Investigation of extended depth-of-field f/8 camera with optimized cubic phase mask and digital restoration [PDF]

EPJ Web of Conferences, 2020
An investigation of extended depth-of-field camera with optimized phase mask and digital restoration is presented. The goal of this paper is to implement the wavefront coding technique without affecting much of the original design, and the design has ...
Chiu Po-Sheng, Vonmetz Kurt, Canini Federico, Urbach H. Paul   +3 more
doaj   +1 more source

Shaded-Mask Filtering for Extended Depth-of-Field Microscopy [PDF]

, 2013
This paper proposes a new spatial filtering approach for increasing the depth-of-field (DOF) of imaging systems, which is very useful for obtaining sharp images for a wide range of axial positions of the object.
Calatayud, Arnau, Doblas Expósito, Ana Isabel, Escobar García, Isabel María, Martínez Corral, Manuel, Saavedra Tortosa, Genaro   +4 more
core   +2 more sources

S-CANDELS: The Spitzer-Cosmic Assembly Near-Infrared Deep Extragalactic Survey. Survey Design, Photometry, and Deep IRAC Source Counts [PDF]

, 2015
The Spitzer-Cosmic Assembly Deep Near-Infrared Extragalactic Legacy Survey (S-CANDELS; PI G. Fazio) is a Cycle 8 Exploration Program designed to detect galaxies at very high redshifts (z > 5).
Ashby, M. L. N., Dunlop, J. S., Egami, E., Faber, S. M., Fazio, G. G., Ferguson, H. C., Grogin, N. A., Hora, J. L., Huang, J. -S., Koekemoer, A. M., Labbe, I., Wang, Z., Willner, S. P.   +12 more
core   +3 more sources

Deep Eyes: Binocular Depth-from-Focus on Focal Stack Pairs

, 2020
Human visual system relies on both binocular stereo cues and monocular focusness cues to gain effective 3D perception. In computer vision, the two problems are traditionally solved in separate tracks.
A Newell, AN Rajagopalan, D Scharstein, H Park, J Zbontar, M Moeller, R Held, S Kuthirummal, SW Hasinoff, Yang Yang, YY Schechner   +10 more
core   +1 more source

Computational localization microscopy with extended axial range [PDF]

, 2018
A new single-aperture 3D particle-localization and tracking technique is presented that demonstrates an increase in depth range by more than an order of magnitude without compromising optical resolution and throughput. We exploit the extended depth range
Carles Santacana, Guillem, Harvey, Andrew R., Zammit, Paul, Zhou, Yongzhuang   +3 more
core   +1 more source

Gravitational lensing by point masses on regular grid points [PDF]

, 2006
It is shown that gravitational lensing by point masses arranged in an infinitely extended regular lattice can be studied analytically using the Weierstrass functions.
Abramowitz, Afonso, Ahlfors, Alcock, An, An, Apostol, Asada, Blandford, Bourassa, Calchi Novati, Chang, Chang, De Jong J., Gil-Merino, Granot, Irwin, Jin H. An, Kayser, Keeton, Koblitz, Kochanek, Lang, Lang, Morgan, Nityananda, Paczyński, Petters, Press, Schechter, Schechter, Schneider, Schneider, Schneider, Schramm, Silverman, Subramanian, Vietri, Wambsganss, Wambsganss, Witt, Witt, Witt, Young   +43 more
core   +4 more sources