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This paper quantifies an error source that limits the accuracy of lidar scan matching, particularly for voxel-based methods. Lidar scan matching, which is used in dead reckoning (also known as lidar odometry) and mapping, computes the…

机器人学 · 计算机科学 2024-01-25 Jason Rife , Matthew McDermott

An important class of nonlinear weighted least-squares problems arises from the assimilation of observations in atmospheric and ocean models. In variational data assimilation, inverse error covariance matrices define the weighting matrices…

数值分析 · 数学 2022-12-06 Olivier Goux , Selime Gürol , Anthony T. Weaver , Oliver Guillet , Youssef Diouane

The estimation of cosmological constraints from observations of the large scale structure of the Universe, such as the power spectrum or the correlation function, requires the knowledge of the inverse of the associated covariance matrix,…

宇宙学与河外天体物理 · 物理学 2015-11-04 Dante J. Paz , Ariel G. Sanchez

Odometry forms an important component of many manned and autonomous systems. In the rail industry in particular, having precise and robust odometry is crucial for the correct operation of the Automatic Train Protection systems that ensure…

机器人学 · 计算机科学 2020-03-17 Andrew W. Palmer , Navid Nourani-Vatani

Cooperative geolocation has attracted significant research interests in recent years. A large number of localization algorithms rely on the availability of statistical knowledge of measurement errors, which is often difficult to obtain in…

应用统计 · 统计学 2017-01-05 Xiufang Shi , Guoqiang Mao , Brian. D. O. Anderson , Zaiyue Yang , Jiming Chen

Density level sets can be estimated using plug-in methods, excess mass algorithms or a hybrid of the two previous methodologies. The plug-in algorithms are based on replacing the unknown density by some nonparametric estimator, usually the…

统计理论 · 数学 2016-11-26 A. Rodríguez-Casal , P. Saavedra-Nieves

Cloud-related parameterizations remain a leading source of uncertainty in climate projections. Although machine learning holds promise for Earth system models (ESMs), many data-driven parameterizations lack interpretability, physical…

大气与海洋物理 · 物理学 2025-11-25 Arthur Grundner , Tom Beucler , Julien Savre , Axel Lauer , Manuel Schlund , Veronika Eyring

This paper introduces a novel oversampling technique designed to improve classification performance on imbalanced datasets. The proposed method enhances the traditional SMOTE algorithm by incorporating convex combination and kernel-based…

机器学习 · 计算机科学 2025-04-15 Wenjie Li , Sibo Zhu , Zhijian Li , Hanlin Wang

Weighting methods are widely used to adjust for covariates in observational studies, sample surveys, and regression settings. In this paper, we study a class of recently proposed weighting methods which find the weights of minimum…

统计方法学 · 统计学 2019-10-29 Yixin Wang , José R. Zubizarreta

Point cloud registration involves aligning one point cloud with another or with a three-dimensional (3D) model, enabling the integration of multimodal data into a unified representation. This is essential in applications such as…

计算机视觉与模式识别 · 计算机科学 2026-04-28 Mehdi Maboudi , Said Harb , Jackson Ferrao , Kourosh Khoshelham , Yelda Turkan , Karam Mawas

Focusing on the well motivated aperture mass statistics $\Map$, we study the possibility of constraining cosmological parameters using future space based SNAP class weak lensing missions. Using completely analytical results we construct the…

天体物理学 · 物理学 2007-05-23 Dipak Munshi , Patrick Valageas

Sub-pixel matching of multimodal optical images is a critical step in combined application of multiple sensors. However structural noise and inconsistencies arising from variations in multimodal image responses usually limit the accuracy of…

计算机视觉与模式识别 · 计算机科学 2026-01-06 Tao Huang , Hongbo Pan , Nanxi Zhou , Siyuan Zou , Shun Zhou

High-dimensional matrix regression has been studied in various aspects, such as statistical properties, computational efficiency and application to specific instances including multivariate regression, system identification and matrix…

统计理论 · 数学 2024-03-06 Xin Li , Dongya Wu

Kalman filters are widely used for object tracking, where process and measurement noise are usually considered accurately known and constant. However, the exact known and constant assumptions do not always hold in practice. For example,…

计算机视觉与模式识别 · 计算机科学 2021-12-23 Chao Jiang , Zhiling Wang , Shuhang Tan , Huawei Liang

Structural identification and damage detection can be generalized as the simultaneous estimation of input forces, physical parameters, and dynamical states. Although Kalman-type filters are efficient tools to address this problem, the…

应用统计 · 统计学 2022-10-04 Daniz Teymouri , Omid Sedehi , Lambros S. Katafygiotis , Costas Papadimitriou

Side-scan sonar (SSS) is a lightweight acoustic sensor that is commonly deployed on autonomous underwater vehicles (AUVs) to provide high-resolution seafloor images. However, leveraging side-scan images for simultaneous localization and…

机器人学 · 计算机科学 2024-11-18 Jun Zhang , Yiping Xie , Li Ling , John Folkesson

Automated f ault detection and monitoring in engineering are critical but frequently difficult owing to the necessity for collecting and labeling large amounts of defective samples . We present an unsupervised method that uses the high end…

计算机视觉与模式识别 · 计算机科学 2024-07-10 Ahmed Maged , Herman Shen

In this paper, we address the challenging problem of data association for underwater SLAM through a novel method for sonar image correspondence using learned features. We introduce SONIC (SONar Image Correspondence), a pose-supervised…

计算机视觉与模式识别 · 计算机科学 2024-05-15 Samiran Gode , Akshay Hinduja , Michael Kaess

In this paper, we consider a general cooperative wireless sensor network (WSN) with multiple hops and the problem of channel estimation. Two matrix-based set-membership algorithms are developed for the estimation of the complex matrix…

信息论 · 计算机科学 2013-03-18 T. Wang , R. C. de Lamare , P. D. Mitchell

Hand-eye calibration is an important and extensively researched method for calibrating rigidly coupled sensors, solely based on estimates of their motion. Due to the geometric structure of this problem, at least two motion estimates with…

机器人学 · 计算机科学 2023-08-14 Markus Horn , Thomas Wodtko , Michael Buchholz , Klaus Dietmayer