Results 31 to 40 of about 55,690 (303)

Tracing ray differentials [PDF]

open access: yesProceedings of the 26th annual conference on Computer graphics and interactive techniques - SIGGRAPH '99, 1999
Antialiasing of ray traced images is typically performed by supersampling the image plane. While this type of filtering works well for many algorithms, it is much more efficient to perform filtering locally on a surface for algorithms such as texture mapping.
openaire   +1 more source

Vicinity ray tracing: an alternative to dynamic ray tracing [PDF]

open access: yesGeophysical Journal International, 1990
SUMMARY A method for computing seismic wavefields in a high-frequency approximation is proposed based on the integration of the kinematic ray tracing equations and a new set of differential equations for the dynamic properties of the wavefront, which we call the vicinity ray tracing (VRT) equations.
Woohan Kim, Vernon F. Cormier
openaire   +1 more source

Ray-optical refraction with confocal lenslet arrays [PDF]

open access: yes, 2008
Two parallel lenslet arrays with focal lengths f1 and f2 that share a common focal plane (that is, which are separated by a distance f1+f2) can refract transmitted light rays according to Snell's law, but with the 'sin's replaced with 'tan's. This is the
Courtial, J.
core   +1 more source

And…Action! Setting the Scene for Accurate Visual CFD Comparisons Using Ray Tracing

open access: yesJournal of Marine Science and Engineering, 2021
Increased graphical capabilities of contemporary computer hardware make ray tracing possible for a much wider range of applications. In science, and numerical fluid mechanics in particular, visual inspections still play a key role in both understanding ...
Maarten Klapwijk, Sébastien Lemaire
doaj   +1 more source

A Study on mm-Wave Propagation in and Around Buildings

open access: yesIEEE Open Journal of Antennas and Propagation, 2023
mm-waves are envisaged as a key enabler for 5G and 6G wireless communications, thanks to the wide bandwidth and to the possibility of implementing large-scale antenna arrays and advanced transmission techniques, such as massive MIMO and beamforming, that
Leonardo Possenti   +5 more
doaj   +1 more source

Three-dimensional polarization ray-tracing Mueller algorithm for an optical system with arbitrary surface type [PDF]

open access: yes, 2023
In order to investigate the relationship between the interface parameters of an optical interface/system and its polarization characteristics, a three-dimensional (3D) polarization ray-tracing Mueller algorithm is proposed in this paper.
Zeng, Xiangwei   +4 more
core   +1 more source

Transient optical simulation by coupling elastic multibody systems, finite elements, and ray tracing

open access: yesJournal of the European Optical Society-Rapid Publications, 2023
Transient dynamical–thermoelastic–optical system simulation is an important expansion of classical ray tracing through rigid, resting lenses because the operating performance of high-precision optical systems can be influenced by dynamical excitations or
Hahn Luzia   +2 more
doaj   +1 more source

slambrick/SHeM-Ray-Tracing-Simulation: SHeM Ray Tracing Simulation

open access: yes, 2018
<p>A ray tracing simulation to reconstruct contrast in scanning helium microscope images.</p ...
Sam Lambrick (8220006), Sam Lambrick
core   +1 more source

Assessing the effect of DS-CDMA chip rate on RAKE branch statistics using a ray-tracing propagation model [PDF]

open access: yes, 1994
An important improvement in the performance of CDMA and other wideband digital communication systems can be achieved using a RAKE receiver architecture and diversity combining of its branches. The paper presents an analysis of RAKE branch statistics as a
Anderson, HR, McGeehan, JP
core   +1 more source

PENERAPAN ORDERED GRID SUPER SAMPLING UNTUK FULL SCENE ANTI ALIASING PADA MESIN RENDER RAY TRACING

open access: yesJUTI: Jurnal Ilmiah Teknologi Informasi, 2003
Metode ray tracing adalah salah satu metode render dalam grafika komputer tiga-dimensi yang mensimulasikan sifat-sifat fisik sinar di alam. Dengan metode ray tracing, akan didapatkan citra hasil render dengan model pencahayaan yang realistis.
Febriliyan Samopa, Budi Kurniawan
doaj   +1 more source

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