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Detection in large-scale scenes is a challenging problem due to small objects and extreme scale variation. It is essential to focus on the image regions of small objects. In this paper, we propose a novel Adaptive Zoom (AdaZoom) network as…

计算机视觉与模式识别 · 计算机科学 2021-06-22 Jingtao Xu , Yali Li , Shengjin Wang

Over nearly two decades, Differential Dynamic Microscopy (DDM) has become a standard technique for extracting dynamic correlation functions from time-lapse microscopy data, with applications spanning colloidal suspensions, polymer…

软凝聚态物质 · 物理学 2025-11-11 Enrico Lattuada , Fabian Krautgasser , Maxime Lavaud , Fabio Giavazzi , Roberto Cerbino

Current models of galaxy formation applied to understanding the large-scale structure of the universe have two parts. The first is an accurate solution of the equations of motion for the dark matter due to gravitational clustering. The…

天体物理学 · 物理学 2009-11-06 Roman Scoccimarro , Ravi K. Sheth

Silicon Dangling Bonds have established themselves as a promising competitor in the field of beyond-CMOS technologies. Their integration density and potential for energy dissipation advantages of several orders of magnitude over…

应用物理 · 物理学 2023-03-08 Jan Drewniok , Marcel Walter , Samuel Sze Hang Ng , Konrad Walus , Robert Wille

This paper presents an improved and modified partial differential equation (PDE)-based de-hazing algorithm. The proposed method combines logarithmic image processing models in a PDE formulation refined with linear filter-based operators in…

计算机视觉与模式识别 · 计算机科学 2025-02-25 Uche A. Nnolim

Extending 3D Gaussian Splatting (3DGS) to 4D physical simulation remains challenging. Based on the Material Point Method (MPM), existing methods either rely on manual parameter tuning or distill dynamics from video diffusion models,…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Yikun Ma , Yiqing Li , Jingwen Ye , Zhongkai Wu , Weidong Zhang , Lin Gao , Zhi Jin

Because of the vast volume of data being produced by today's scientific simulations, lossy compression allowing user-controlled information loss can significantly reduce the data size and the I/O burden. However, for large-scale cosmology…

信息论 · 计算机科学 2017-08-08 Dingewn Tao , Sheng Di , Zizhong Chen , Franck Cappello

Dynamic Vision Sensor (DVS) event camera models are important tools for predicting camera response, optimizing biases, and generating realistic simulated datasets. Existing DVS models have been useful, but have not demonstrated high realism…

图像与视频处理 · 电气工程与系统科学 2025-05-13 Rui Graca , Tobi Delbruck

The growing volume of scientific simulation data presents a significant challenge for storage and transfer. Error-bounded lossy compression has emerged as a critical solution for mitigating these challenges, providing a means to reduce data…

分布式、并行与集群计算 · 计算机科学 2026-01-29 Arshan Khan , Rohit Deshmukh , Ben O'Neill

The Dark Sky Simulations are an ongoing series of cosmological N-body simulations designed to provide a quantitative and accessible model of the evolution of the large-scale Universe. Such models are essential for many aspects of the study…

宇宙学与河外天体物理 · 物理学 2014-07-10 Samuel W. Skillman , Michael S. Warren , Matthew J. Turk , Risa H. Wechsler , Daniel E. Holz , P. M. Sutter

We present the "DARKSKIES" suite of one hundred, zoom-in hydrodynamic simulations of massive ($M_{200}>5\times10^{14}{\rm M}_\odot)$ galaxy clusters with self-interacting dark matter (SIDM). We super-sample the simulations such that $m_{\rm…

宇宙学与河外天体物理 · 物理学 2025-11-19 David Harvey , Yves Revaz , Matthieu Schaller , Aurel Schneider , Ethan Tregidga , Felix Vecchi

Image simulations are essential tools for preparing and validating the analysis of current and future wide-field optical surveys. However, the galaxy models used as the basis for these simulations are typically limited to simple parametric…

天体物理仪器与方法 · 物理学 2021-05-12 Francois Lanusse , Rachel Mandelbaum , Siamak Ravanbakhsh , Chun-Liang Li , Peter Freeman , Barnabas Poczos

The performance of perception tasks is heavily influenced by imaging systems. However, designing cameras with high task performance is costly, requiring extensive camera knowledge and experimentation with physical hardware. Additionally,…

计算机视觉与模式识别 · 计算机科学 2024-11-06 Chengyang Yan , Donald G. Dansereau

Differentiable 3D-Gaussian splatting (GS) is emerging as a prominent technique in computer vision and graphics for reconstructing 3D scenes. GS represents a scene as a set of 3D Gaussians with varying opacities and employs a computationally…

计算机视觉与模式识别 · 计算机科学 2024-07-08 Ziyuan Qu , Omkar Vengurlekar , Mohamad Qadri , Kevin Zhang , Michael Kaess , Christopher Metzler , Suren Jayasuriya , Adithya Pediredla

In the domain of 3D scene representation, 3D Gaussian Splatting (3DGS) has emerged as a pivotal technology. However, its application to large-scale, high-resolution scenes (exceeding 4k$\times$4k pixels) is hindered by the excessive…

计算机视觉与模式识别 · 计算机科学 2024-04-22 Wenkai Liu , Tao Guan , Bin Zhu , Lili Ju , Zikai Song , Dan Li , Yuesong Wang , Wei Yang

Photometric redshifts (photo-$z$'s) are crucial for the cosmology, galaxy evolution, and transient science drivers of next-generation imaging facilities like the Euclid Mission, the Rubin Observatory, and the Nancy Grace Roman Space…

星系天体物理 · 物理学 2025-12-03 Emma R. Moran , Brett H. Andrews , Jeffrey A. Newman , Biprateep Dey

We introduce a suite of cosmological volume simulations to study the evolution of galaxies as part of the Feedback in Realistic Environments project. FIREbox, the principal simulation of the present suite, provides a representative sample…

In paper I of this series (Fosalba et al. 2013), we presented a new N-body lightcone simulation from the MICE collaboration, the MICE Grand Challenge (MICE-GC), containing about 70 billion dark-matter particles in a (3 Gpc)^3 comoving…

宇宙学与河外天体物理 · 物理学 2015-07-30 P. Fosalba , E. Gaztanaga , F. J. Castander , M. Crocce

We present a simulation-based inference framework using a convolutional neural network to infer dynamical masses of galaxy clusters from their observed 3D projected phase-space distribution, which consists of the projected galaxy positions…

宇宙学与河外天体物理 · 物理学 2020-12-18 Doogesh Kodi Ramanah , Radosław Wojtak , Nikki Arendse

At early times dark matter has a thermal velocity dispersion of unknown amplitude which, for warm dark matter models, can influence the formation of nonlinear structure on observable scales. We propose a new scheme to simulate cosmologies…

宇宙学与河外天体物理 · 物理学 2020-06-10 Jens Stücker , Oliver Hahn , Raul E. Angulo , Simon D. M. White