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Estimating surface reflectance (BRDF) is one key component for complete 3D scene capture, with wide applications in virtual reality, augmented reality, and human computer interaction. Prior work is either limited to controlled environments…

计算机视觉与模式识别 · 计算机科学 2018-04-03 Kihwan Kim , Jinwei Gu , Stephen Tyree , Pavlo Molchanov , Matthias Nießner , Jan Kautz

The lag-luminosity relation for gamma-ray bursts (GRBs) is an anti-correlation between the time lag, tau_lag, which represents the delay between the arrival of hard and soft photons, and the isotropic peak luminosity, L. In this paper, we…

高能天体物理现象 · 物理学 2012-03-30 Walid J. Azzam

We present a method to estimate the jet opening angles of long duration Gamma-Ray Bursts (GRBs) using the prompt gamma-ray energetics and an inversion of the Ghirlanda relation, which is a correlation between the time-integrated peak energy…

高能天体物理现象 · 物理学 2016-02-17 Adam Goldstein , Valerie Connaughton , Michael S. Briggs , Eric Burns

We propose a probabilistic framework for performing simultaneous estimation of source structure and fringe-fitting parameters in Very Long Baseline Interferometry (VLBI) observations. As a first step, we demonstrate this technique through…

Ground penetrating radar (GPR) provides a promising technology for accurate subsurface object detection. In particular, it has shown promise for detecting landmines with low metal content. However, the ground bounce (GB) that is present in…

机器学习 · 计算机科学 2025-06-24 Li Tang , Peter A. Torrione , Cihat Eldeniz , Leslie M. Collins

The new generation of radio interferometers is characterized by high sensitivity, wide fields of view and large fractional bandwidth. To synthesize the deepest images enabled by the high dynamic range of these instruments requires us to…

天体物理仪器与方法 · 物理学 2018-04-25 C. Tasse , B. Hugo , M. Mirmont , O. Smirnov , M. Atemkeng , L. Bester , M. J. Hardcastle , R. Lakhoo , S. Perkins , T. Shimwell

Estimation, recognition, and near-future prediction of 3D trajectories based on their two dimensional projections available from one camera source is an exceptionally difficult problem due to uncertainty in the trajectories and environment,…

计算机视觉与模式识别 · 计算机科学 2017-05-02 Decebal Constantin Mocanu , Haitham Bou Ammar , Luis Puig , Eric Eaton , Antonio Liotta

Blind face restoration (BFR) is important while challenging. Prior works prefer to exploit GAN-based frameworks to tackle this task due to the balance of quality and efficiency. However, these methods suffer from poor stability and…

计算机视觉与模式识别 · 计算机科学 2023-08-09 Xinmin Qiu , Congying Han , Zicheng Zhang , Bonan Li , Tiande Guo , Xuecheng Nie

Using an established classification technique, we leverage standard observations and analyses to predict the progenitors of gamma-ray bursts (GRBs). This technique, utilizing support vector machine (SVM) statistics, provides a more nuanced…

高能天体物理现象 · 物理学 2024-07-15 P. Nuessle , J. L. Racusin , N. E. White

High-precision positioning in GPS-denied environments is a demanding but challenging technology. Resonant Beam Positioning (RBP) utilizes a resonant beam with properties such as energy focusing, self-establishment, self-alignment, and…

Theory suggests that about 10% of Swift-detected gamma-ray bursts (GRBs) will originate at redshifts greater than 5 yet a number of high redshift candidates may be left unconfirmed due to the lack of measured redshifts. Here we introduce…

We review the current understanding of the diffuse gamma-ray background (DGRB). The DGRB is what remains of the total measured gamma-ray emission after the subtraction of the resolved sources and of the diffuse Galactic foregrounds. It is…

宇宙学与河外天体物理 · 物理学 2015-09-28 Mattia Fornasa , Miguel A. Sanchez-Conde

As large-scale heterogeneous data sets become increasingly available, adapting foundation models at low cost has become a key issue. Seminal works in natural language processing, e.g. Low-Rank Adaptation (LoRA), leverage the low "intrinsic…

计算机视觉与模式识别 · 计算机科学 2025-09-26 Romain Thoreau , Valerio Marsocci , Dawa Derksen

A recent work has found a tight global relation between the GRB prompt fluence, peak flux (based on the optimum time scale determined from the Bayesian Blocks-based analysis) and duration using data from the Fermi Gamma-Ray burst monitor,…

高能天体物理现象 · 物理学 2022-06-17 S. Pradyumna , Shantanu Desai

In video analysis, background models have many applications such as background/foreground separation, change detection, anomaly detection, tracking, and more. However, while learning such a model in a video captured by a static camera is a…

计算机视觉与模式识别 · 计算机科学 2022-09-19 Guy Erez , Ron Shapira Weber , Oren Freifeld

The dispersion measures (DM) of fast radio bursts (FRBs) encode the integrated electron density along the line-of-sight, which is typically dominated by the intergalactic medium (IGM) contribution in the case of extragalactic FRBs. In this…

宇宙学与河外天体物理 · 物理学 2022-03-30 Khee-Gan Lee , Metin Ata , Ilya S. Khrykin , Yuxin Huang , J. Xavier Prochaska , Jeff Cooke , Jielai Zhang , Adam Batten

We present a systematic analysis of the spectral and temporal properties of 17 GRBs co-detected by GBM and LAT on board the Fermi satellite by May 2010. We performed a time-resolved spectral analysis of all the bursts with the finest…

高能天体物理现象 · 物理学 2011-03-17 Bin-Bin Zhang , Bing Zhang , En-Wei Liang , Yi-Zhong Fan , Xue-Feng Wu , Asaf Pe'er , Amanda Maxham , He Gao , Yun-Ming Dong

Two time domain surveys, recently funded as part of the Eric and Wendy Schmidt Observatory System; the Argus Array, in the optical, and the Deep Synoptic Array (DSA), in the radio, will transform gamma-ray burst (GRB) science via the…

Matting with a static background, often referred to as ``Background Matting" (BGM), has garnered significant attention within the computer vision community due to its pivotal role in various practical applications like webcasting and photo…

计算机视觉与模式识别 · 计算机科学 2024-02-27 Hanxi Li , Guofeng Li , Bo Li , Lin Wu , Yan Cheng

Deep learning-based techniques for the analysis of multimodal remote sensing data have become popular due to their ability to effectively integrate complementary spatial, spectral, and structural information from different sensors.…

计算机视觉与模式识别 · 计算机科学 2026-04-10 Hao Liu , Yongjie Zheng , Yuhan Kang , Mingyang Zhang , Maoguo Gong , Lorenzo Bruzzone