Results 301 to 310 of about 44,823,850 (352)

Optical Flow Estimation Using a Spatial Pyramid Network

Computer Vision and Pattern Recognition, 2016
We learn to compute optical flow by combining a classical spatial-pyramid formulation with deep learning. This estimates large motions in a coarse-to-fine approach by warping one image of a pair at each pyramid level by the current flow estimate and ...
Anurag Ranjan, Michael J. Black
semanticscholar   +1 more source

Approximate optical system model

Applied Optics, 1976
An analytical development is presented for on-axis far-field irradiance in terms of an optical system that specifies a laser beam quality, an optical train with both linear and nonlinear phase aberrations (power driven), and a focusing telescope with jitter.
D A, Holmes, P V, Avizonis
openaire   +2 more sources

RETRACTED ARTICLE: High speed optical switching gain based EDFA model with 30 Gb/s NRZ modulation code in optical systems

Journal of optical communications, 2020
This study presents high speed optical switching gain based Erbium doped fiber amplifier model. By using the proposed model the optical fiber loss can be minimized.
Mahmoud M. A. Eid, A. Rashed, Kurmendra
semanticscholar   +1 more source

Optical tweezers: Theory and modelling

Journal of Quantitative Spectroscopy and Radiative Transfer, 2014
Since their development in the 1980s, optical tweezers have become a widely used and versatile tool in many fields. Outstanding applications include the quantitative measurement of forces in cell biology and biophysics. Computational modelling of optical tweezers is a valuable tool in support of experimental work, especially quantitative applications ...
Timo A. Nieminen, Nathaniel du Preez-Wilkinson, Alexander B. Stilgoe, Vincent L.Y. Loke, Ann A.M. Bui, Halina Rubinsztein-Dunlop   +5 more
openaire   +4 more sources

On a Decomposition Model for Optical Flow

2009
In this paper we present a variational method for determining cartoon and texture components of the optical flow of a noisy image sequence. The method is realized by reformulating the optical flow problem first as a variational denoising problem for multi-channel data and then by applying decomposition methods.
Jochen Abhau, Zakaria Belhachmi, Otmar Scherzer   +2 more
openaire   +2 more sources

Optically gated MOSFET modeling

Proceedings of the International Conference and Workshop on Emerging Trends in Technology, 2010
In the recent decades, interest has been shown by the researcher towards the modeling of the optical effects on MOSFET with submicron channel length. It is mainly because device is expected to emerge as potential device to be integrated as MMIC, OEIC and ASIC for optical based system particularly optical communication. Present paper makes an attempt to
B. K. Mishra 0001, Gayatri Phade, Lochan Jolly, S. C. Patil   +3 more
openaire   +2 more sources

The optical modelling of the human lens

Ophthalmic and Physiological Optics, 1991
The effect of varying lens shape factors and refractive index distribution on two lens performance characteristics (equivalent power and spherical aberration) are considered, using a mathematical model of the human lens which is based upon ellipsoidal iso‐indical contours.
Smith, George, Pierscionek, Barbara K., Atchison, David A.   +2 more
openaire   +3 more sources

A volume density optical model

Proceedings of the 1992 workshop on Volume visualization - VVS '92, 1992
A simple, but accurate, formal volume density optical model is developed for volume rendering scattered data or scalar fields from the finite element method, as opposed to scanned data sets where material classification is involved. The model is suitable either for ray tracing or projection methods and allows maximum flexibility in setting color and ...
Peter L. Williams, Nelson L. Max
openaire   +1 more source

Optical model for use in oceanic ecosystem models

Applied Optics, 1999
Modeling the plankton ecosystem requires a code for simulating the profile of irradiance from the chlorophyll profile at each time step of the integration. We have compared two existing codes with data from the Biogeochemical Ocean Flux Study: the Hydrolight radiative transfer model is accurate but too slow to use interactively in ecological models ...
C C, Liu, J D, Woods, C D, Mobley
openaire   +2 more sources

Average Power Model of Optical Raman Amplifiers Based on Frequency Spacing and Amplifier Section Stage Optimization

Journal of optical communications, 2019
The study presents the average power model of optical Raman fiber amplifiers based on frequency spacing and amplifier section stage optimization technique.
I. Amiri, A. Rashed, P. Yupapin
semanticscholar   +1 more source