Results 21 to 30 of about 2,812 (211)

Fast ray tracing by ray classification [PDF]

ACM SIGGRAPH Computer Graphics, 1987
We describe a new approach to ray tracing which drastically reduces the number of ray-object and ray-bounds intersection calculations by means of 5-dimensional space subdivision. Collections of rays originating from a common 3D rectangular volume and directed through a 2D solid angle are represented as hypercubes in 5-space.
James Arvo, David Blair Kirk
openaire   +2 more sources

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

Journal 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

RAY TRACING RENDER MENGGUNAKAN FRAGMENT ANTI ALIASING

JUTI: Jurnal Ilmiah Teknologi Informasi, 2008
Rendering is generating surface and three-dimensional effects on an object displayed on a monitor screen. Ray tracing as a rendering method that traces ray for each image pixel has a drawback, that is, aliasing (jaggies effect). There are some methods
Febriliyan Samopa, Wawan Mardian
doaj   +1 more source

A Study on mm-Wave Propagation in and Around Buildings

IEEE 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, Marina Barbiroli, Enrico M. Vitucci, Franco Fuschini, Mattia Fosci, Vittorio Degli-Esposti   +5 more
doaj   +1 more source

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

Journal 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, Matter Fabian, Eberhard Peter   +2 more
doaj   +1 more source

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

JUTI: 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

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

Geophysical 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

Foveated Denoising for Ray Tracing Rendering

IEEE Access
Foveated graphics allocate computational load in light of the non-uniform nature of the human visual system (HVS), accelerating the scene rendering of virtual reality (VR).
Daiyun Guo, Yan Zhang, Xubo Yang
doaj   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

FEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell, Thomas Walther, Egbert Hoiczyk   +2 more
wiley   +1 more source

Modelling undulators in ray tracing simulations

Journal of Synchrotron Radiation
We introduce a model that can accurately simulate radiation from undulator sources for ray tracing applications. It incorporates several key effects relevant to fourth-generation synchrotron sources, such as electron emittance, energy spread, and ...
Manuel Sanchez del Rio, Juan Reyes-Herrera   +1 more
doaj   +1 more source