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How do galaxies move relative to one another? While we can examine the motion of dark matter subhalos around their hosts in simulations of structure formation, determining the orbits of satellites around their parent galaxies from…

Astrophysics of Galaxies · Physics 2015-10-21 David Hendel , Kathryn V. Johnston

Scattering-type scanning near-field optical microscopy is a powerful imaging technique for studying materials beyond the diffraction limit. However, interpreting near-field measurements poses challenges in mapping the response of…

Object detection in high-resolution satellite imagery is emerging as a scalable alternative to on-the-ground survey data collection in many environmental and socioeconomic monitoring applications. However, performing object detection over…

Computer Vision and Pattern Recognition · Computer Science 2021-12-17 Chenlin Meng , Enci Liu , Willie Neiswanger , Jiaming Song , Marshall Burke , David Lobell , Stefano Ermon

Among the group of extrasolar planets, transiting planets provide a great opportunity to obtain direct measurements for the basic physical properties, such as mass and radius of these objects. These planets are therefore highly important in…

Instrumentation and Methods for Astrophysics · Physics 2009-06-19 András Pál

Underwater vision suffers from severe effects due to selective attenuation and scattering when light propagates through water. Such degradation not only affects the quality of underwater images but limits the ability of vision tasks.…

Computer Vision and Pattern Recognition · Computer Science 2018-01-16 Chongyi Li , Jichang Guo , Chunle Guo

I explore many aspects of jet substructure at the Large Hadron Collider, ranging from theoretical techniques for jet calculations, to phenomenological tools for better searches with jets, to software for implementing and comparing such…

High Energy Physics - Phenomenology · Physics 2015-03-17 Christopher K. Vermilion

Crush curves are of fundamental importance to numerical modeling of small and porous astrophysical bodies. The empirical literature often measures them for silica grains, and different studies have used various methods, sizes, textures, and…

We use a microwave cavity to investigate the influence of a movable absorbing center on the wave function of an open quantum dot. Our study shows that the absorber acts as a position-selective probe, which may be used to suppress those wave…

Mesoscale and Nanoscale Physics · Physics 2010-06-07 Y. -H. Kim , M. Barth , U. Kuhl , H. -J. Stoeckmann , J. P. Bird

Light scattering is the main limitation for optical imaging. However, light can be focused through or inside turbid media by spatially shaping the incident wavefront. Wavefront shaping is ultimately limited by the available photon budget.…

Instrumentation and Detectors · Physics 2021-03-24 Bahareh Mastiani , Ivo M. Vellekoop

Almost all meteorite impacts occur at oblique incidence angles, but the effect of impact angle on crater size is not well understood, especially for large craters. To improve oblique impact crater scaling, we present a suite of simulations…

Earth and Planetary Astrophysics · Physics 2022-12-07 T. M. Davison , G. S. Collins

The capability to detect boulders on the surface of small bodies is beneficial for vision-based applications such as hazard detection during critical operations and navigation. This task is challenging due to the wide assortment of…

Computer Vision and Pattern Recognition · Computer Science 2022-10-31 Mattia Pugliatti , Francesco Topputo

Recent progress in computational photography has shown that we can acquire near-infrared (NIR) information in addition to the normal visible (RGB) band, with only slight modifications to standard digital cameras. Due to the proximity of the…

Computer Vision and Pattern Recognition · Computer Science 2014-06-25 Neda Salamati , Diane Larlus , Gabriela Csurka , Sabine Süsstrunk

Convolutional neural networks (CNNs) have achieved state-of-the-art performance in image recognition tasks but often involve complex architectures that may overfit on small datasets. In this study, we evaluate a compact CNN across five…

Computer Vision and Pattern Recognition · Computer Science 2026-01-30 Alfe Suny , MD Sakib Ul Islam , Md. Imran Hossain

Path loss prediction for wireless communications is highly dependent on the local environment. Propagation models including clutter information have been shown to significantly increase model accuracy. This paper explores the application of…

Machine Learning · Computer Science 2024-08-21 Ryan Dempsey , Jonathan Ethier

We performed impact experiments to observe patterns in an ejecta curtain with targets consisting of small sand particles and large inclusions comparable to or smaller than the size of the projectiles. The spatial intensity distributions in…

Earth and Planetary Astrophysics · Physics 2019-08-07 Toshihiko Kadono , Ryo Suetsugu , Dai Arakawa , Yoshiki Kasagi , Syuichi Nagayama , Ayako I. Suzuki , Sunao Hasegawa

The physical state of the intergalactic medium can be probed in great detail with the intervening absorption systems seen in quasar spectra. The properties of the Hydrogen absorbers depend on many cosmological parameters, such as the…

Astrophysics · Physics 2009-11-11 Tom Theuns

Upcoming large multiwavelength photometric surveys will provide a leap in our understanding of small body populations, among other fields of modern astrophysics. Serendipitous observations of small bodies in different orbital locations…

Earth and Planetary Astrophysics · Physics 2024-09-10 Alvaro Alvarez-Candal

A method is proposed for high-resolution, three-dimensional reconstruction of internal structure of objects from planar transmission images. The described approach can be used with any form of radiation or matter waves, in principle,…

Optics · Physics 2022-08-24 T. E. Gureyev , H. M. Quiney , L. J. Allen

The long-term goal of this work is the development of high-fidelity simulation tools for dispersive tsunami propagation. A dispersive model is especially important for short wavelength phenomena such as an asteroid impact into the ocean,…

Numerical Analysis · Mathematics 2021-10-05 Marsha J. Berger , Randall J. LeVeque

The Karhunen-Lo\`eve transform (KLT) is often used for data decorrelation and dimensionality reduction. Because its computation depends on the matrix of covariances of the input signal, the use of the KLT in real-time applications is…

Image and Video Processing · Electrical Eng. & Systems 2021-11-30 A. P. Radünz , F. M. Bayer , R. J. Cintra