Results 111 to 120 of about 1,253,282 (331)

Power-Balanced Hybrid Optics Boosted Design for Achromatic Extended-Depth-of-Field Imaging via Optimized Mixed OTF

, 2021
The power-balanced hybrid optical imaging system is a special design of a diffractive computational camera, introduced in this paper, with image formation by a refractive lens and Multilevel Phase Mask (MPM).
Igor Shevkunov (3915149), Vladimir Katkovnik (4240030), Seyyed Reza Miri Rostami (14384859), Samuel Pinilla (11466583), Karen Egiazarian (4240033)   +4 more
core   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

A method for estimating the errors in many-light rendering with supersampling

Computational Visual Media, 2019
In many-light rendering, a variety of visual and illumination effects, including anti-aliasing, depth of field, volumetric scattering, and subsurface scattering, are combined to create a number of virtual point lights (VPLs).
Hirokazu Sakai, Kosuke Nabata, Shinya Yasuaki, Kei Iwasaki   +3 more
doaj   +1 more source

Avoiding negative depth in inverse depth bearing-only SLAM

, 2008
In this paper we consider ways to alleviate negative estimated depth for the inverse depth parameterisation of bearing-only SLAM. This problem, which can arise even if the beacons are far from the platform, can cause catastrophic failure of the filter.We
Parsley, MP, S.J. Julier, Julier, SJ, M.P. Parsley   +3 more
core   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Object-based 2D-to-3D video conversion for effective stereoscopic content generation in 3D-TV applications

, 2011
Three-dimensional television (3D-TV) has gained increasing popularity in the broadcasting domain, as it enables enhanced viewing experiences in comparison to conventional two-dimensional (2D) TV.
Yue Feng, Jinchang Ren, Jiang, J, Feng, Yue, Ren, J, Feng, Y, Ren, Jinchang, Jiang, Jianmin, Jianmin Jiang   +8 more
core   +1 more source

Nanometric depth resolution from multi-focal images in microscopy [PDF]

, 2011
We describe a method for tracking the position of small features in three dimensions from images recorded on a standard microscope with an inexpensive attachment between the microscope and the camera.
Dalgarno, Heather I. C., Dalgarno, Heather I.C., Dada, Adetunmise C., Greenaway, AH, Parton, Richard M., Dalgarno, H. I C, Dada, Adetunmise C, Towers, Catherine E., Gavin J. Gibson, Dalgarno, Paul A., Gibson, GJ, Paul A. Dalgarno, Adetunmise C. Dada, Richard J. Warburton, Parton, Richard M, Alan H. Greenaway, Gibson, Gavin J, Gibson, Gavin J., Dalgarno, Paul A, Warburton, RJ, Catherine E. Towers, Dalgarno, HI, Ilan Davis, Greenaway, Alan H, Davis, Ilan, Greenaway, Alan H., Parton, RM, Towers, Catherine E, Dada, AC, Dalgarno, Heather I C, Heather I. C. Dalgarno, Warburton, Richard J., Warburton, Richard J, Richard M. Parton, Dalgarno, PA, Davis, I, Towers, CE, Dalgarno, Paul A.; id_orcid   +37 more
core   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Nonthermal Plasma Reduction of Nickel Oxide Layers by Atmospheric Pressure Dielectric Barrier Discharge in Argon/Hydrogen

Advanced Engineering Materials, EarlyView.
This work explores the reduction of nickel oxide layers using dielectric barrier discharge plasma in an argon–hydrogen atmosphere. The results reveal a strong temperature dependence, enabling complete reduction of thick oxide layers at 200°C within seconds.
Maria Argirusi, Viktor Udachin, Sascha Jan Zimmermann, Alexander Tillmanns, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +5 more
wiley   +1 more source