Results 211 to 220 of about 39,582 (257)

Multi-aperture photography

ACM Transactions on Graphics, 2007
The emergent field of computational photography is proving that, by coupling generalized imaging optics with software processing, the quality and flexibility of imaging systems can be increased. In this paper, we capture and manipulate multiple images of a scene taken with different aperture settings ( f -numbers ...
Paul Green, Wenyang Sun, Wojciech Matusik, Frédo Durand   +3 more
openaire   +1 more source

Wire-wound multi-aperture collimators

Physics in Medicine & Biology, 1979
A method by which a variety of multi-aperture collimators for X-ray imaging may be made is described. Wires are laid around frames of pins or slots, with alternate 'north-south' and 'east-west' directions, to make grids which are stacked to make a pattern of square openings which are the collimator apertures.
R L, Clarke, M W, White, E, Rabin, K F, Hafner   +3 more
openaire   +2 more sources

Multi-aperture coherent imaging

SPIE Proceedings, 2011
Aperture synthesis offers the potential for high resolution images in a relatively compact system. We describe our multiaperture IMAGE testbed which uses coherent detection to measure the complex field in spatially separated apertures. We describe a post-detection optimization algorithm which is used to synthesize a composite image whose angular ...
Nicholas J. Miller, Joseph W. Haus, Paul F. McManamon, David Shemano   +3 more
openaire   +1 more source

Thin Multi-Aperture Microscope

2019 24th Microoptics Conference (MOC), 2019
The design and the set-up of a thin multi-aperture microscope is introduced. It utilizes an array of identical micro-optical channels, each magnifying a limited field of view onto a CMOS camera as detector array. The very compact system can capture a large field of view by microscopic lateral scanning.
Stephan Schacke, Rene Berlich, Bernd Höfer, Peter Dannberg, Ben Zaage, Erik Beckert, Norbert Danz   +6 more
openaire   +1 more source

Multi-aperture hyperspectral imaging

Imaging and Applied Optics, 2013
Snap-shot hyperspectral imagers remain prohibitively expensive for many applications. An array of low-cost, spectrally distinct, miniature cameras capture high spectral and spatial resolution data-cubes with the aid of computational reconstruction.
James Downing, Andrew R. Harvey
openaire   +1 more source

Multi-aperture anomaly detector for clutter background

2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016
Without priori information, anomaly detector has more important utility compared with supervised target detection. Many classical anomaly detectors have obtained perfect performance in many situations. However, there still have two problems which are correlated with accuracy of anomaly detector.
Min Li, Xinnan Fan, Xuewu Zhang 0001, Puhuang Li   +3 more
openaire   +1 more source

Towards an ultrathin multi-aperture microscope

Imaging, Manipulation, and Analysis of Biomolecules, Cells, and Tissues XVIII, 2020
Recent biomedical developments towards compact, mobile, decentralized and system-integrated diagnostic platforms require automated and miniaturized microscopy technologies. Reducing system dimensions by downsizing classical single aperture optics limits either the field of view (FOV) or resolution. However, arranging multiple miniaturized objectives in
Stephan Schacke, René Berlich, Bernd Höfer, Peter Dannberg, Ben Zaage, C. Damm, Erik Beckert, Norbert Danz   +7 more
openaire   +1 more source

Multi-aperture snapshot compressive hyperspectral camera

Optics Letters, 2018
In this Letter, we present a new snapshot hyperspectral (HS) camera based on a multi-aperture design. The technique uses an array of modified Fabry-Perot resonators together with a lens array in order to acquire an array of spectrally multiplexed modulated sub-images.
Yaniv Oiknine, Isaac August, Adrian Stern   +2 more
openaire   +2 more sources

Multi-Aperture 3D Imaging Systems

2008 IEEE Aerospace Conference, 2008
With a multi-aperture imaging system, one creates a large imaging aperture by combining the light from a series of distributed telescopes. In doing this, one can construct a fine-resolution imaging system with reduced volume. We present work on multi-aperture, active imaging systems that use coherent detection and digital image formation.
Joseph C. Marron, Richard L. Kendrick
openaire   +1 more source

A Multi-Aperture Cryogenic Storage Cell

Journal of Applied Physics, 1968
Two types of superconducting memory cells are now being considered: the continuous-film memory and cryotron-switched storage loops. The former suffer from low cell operating range compared to cell-to-cell variation. The cryotron cells, although having a wider operating range, must be switched very rapidly to have a detectable output signal.
J. L. Mundy, V. L. Newhouse
openaire   +1 more source