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Recent advances in spectroscopic instrumentation and calibration methods dramatically improve the quality of quasar spectra. Supercomputer calculations show that, at high spectral resolution, procedures used in some previous analyses of…

宇宙学与河外天体物理 · 物理学 2022-03-15 John K. Webb , Chung-Chi Lee , Dinko Milaković

Context. Recently our ability to study stars using asteroseismic techniques has increased dramatically, largely through the use of space based photometric observations. Work has also been done using ground based spectroscopic observations…

太阳与恒星天体物理 · 物理学 2018-10-03 Jesper Schou

Coordinating proximity and tactile imaging by collocating cameras with tactile sensors can 1) provide useful information before contact such as object pose estimates and visually servo a robot to a target with reduced occlusion and higher…

机器人学 · 计算机科学 2022-04-29 Arkadeep Narayan Chaudhury , Timothy Man , Wenzhen Yuan , Christopher G. Atkeson

Polarization-sensitive optical coherence tomography (PS-OCT) extends OCT by analyzing the polarization states of backscattered light to quantify tissue birefringence. However, conventional implementations require polarization-diverse…

In policy learning for robotic manipulation, sample efficiency is of paramount importance. Thus, learning and extracting more compact representations from camera observations is a promising avenue. However, current methods often assume full…

Ghost imaging needs massive measurements to obtain an image with good visibility and the imaging speed is usually very low. In order to realize real-time high-resolution ghost imaging of a target which is located in a scenario with a large…

图像与视频处理 · 电气工程与系统科学 2019-05-22 Cheng Zhou , Tian Tian , Chao Gao , Wenli Gong , Lijun Song

Tailoring the functional properties of advanced organic/inorganic heterogeonous devices to their intended technological applications requires knowledge and control of the microscopic structure inside the device. Atomistic quantum mechanical…

材料科学 · 物理学 2019-03-13 Milica Todorović , Michael U. Gutmann , Jukka Corander , Patrick Rinke

Accurate information about the location and orientation of a camera in mobile devices is central to the utilization of location-based services (LBS). Most of such mobile devices rely on GPS data but this data is subject to inaccuracy due to…

计算机视觉与模式识别 · 计算机科学 2014-12-31 Mahdi Salarian

Non-line-of-sight (NLOS) imaging is based on capturing the multi-bounce indirect reflections from the hidden objects. Active NLOS imaging systems rely on the capture of the time of flight of light through the scene, and have shown great…

图像与视频处理 · 电气工程与系统科学 2022-04-19 Jiayong Peng , Fangzhou Mu , Ji Hyun Nam , Siddeshwar Raghavan , Yin Li , Andreas Velten , Zhiwei Xiong

We analyze the observability of motion estimates from the fusion of visual and inertial sensors. Because the model contains unknown parameters, such as sensor biases, the problem is usually cast as a mixed identification/filtering, and the…

机器人学 · 计算机科学 2015-04-28 Joshua Hernandez , Konstantine Tsotsos , Stefano Soatto

Identifiability is a central issue in blind source separation (BSS), determining whether latent sources can be uniquely recovered from observed mixtures. Classical approaches address identifiability either by exploiting source…

信号处理 · 电气工程与系统科学 2026-03-18 Tomomi Ogawa , Hiroki Matsumoto

Visual relocalization aims to estimate the pose of a camera from one or more images. In recent years deep learning based pose regression methods have attracted many attentions. They feature predicting the absolute poses without relying on…

计算机视觉与模式识别 · 计算机科学 2022-05-27 Chengyu Qiao , Zhiyu Xiang , Xinglu Wang

Bayesian Optimization (BO) has shown great promise for the global optimization of functions that are expensive to evaluate, but despite many successes, standard approaches can struggle in high dimensions. To improve the performance of BO,…

机器学习 · 计算机科学 2022-06-17 Sebastian Ament , Carla Gomes

Optical cameras are gaining popularity as the suitable sensor for relative navigation in space due to their attractive sizing, power and cost properties when compared to conventional flight hardware or costly laser-based systems. However, a…

计算机视觉与模式识别 · 计算机科学 2021-08-24 Duarte Rondao , Nabil Aouf , Mark A. Richardson , Vincent Dubanchet

Change detection plays an important role in most video-based applications. The first stage is to build appropriate background model, which is now becoming increasingly complex as more sophisticated statistical approaches are introduced to…

计算机视觉与模式识别 · 计算机科学 2014-05-27 Dong Liang , Shun'ichi Kaneko

In this paper we present an error analysis for polarimetric data obtained with dual-beam instruments. After recalling the basic concepts, we introduce the analytical expressions for the uncertainties of polarization degree and angle. These…

天体物理学 · 物理学 2009-11-11 Ferdinando Patat , Martino Romaniello

This article develops a Bayesian optimization (BO) method which acts directly over raw strings, proposing the first uses of string kernels and genetic algorithms within BO loops. Recent applications of BO over strings have been hindered by…

机器学习 · 计算机科学 2020-10-05 Henry B. Moss , Daniel Beck , Javier Gonzalez , David S. Leslie , Paul Rayson

Ultrasonic acoustic fields have recently been used to generate haptic effects on the human skin as well as to levitate small sub-wavelength size particles. Schlieren imaging and background-oriented schlieren techniques can be used for…

医学物理 · 物理学 2018-10-02 Michele Iodice , William Frier , James Wilcox , Ben Long , Orestis Georgiou

VOS is a new mapping technique that can serve as an alternative to the well-known technique of multidimensional scaling. We present an extensive comparison between the use of multidimensional scaling and the use of VOS for constructing…

数字图书馆 · 计算机科学 2010-03-15 Nees Jan van Eck , Ludo Waltman , Rommert Dekker , Jan van den Berg

Bose-Einstein condensates of ultracold atoms can be used to sense fluctuations of the magnetic field by means of transitions into untrapped hyperfine states. It has been shown recently that counting the outcoupled atoms can yield the power…

量子物理 · 物理学 2016-09-29 O. Kálmán , Z. Darázs , F. Brennecke , P. Domokos