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A streaming algorithm to compute the spectral proper orthogonal decomposition (SPOD) of stationary random processes is presented. As new data becomes available, an incremental update of the truncated eigenbasis of the estimated…

流体动力学 · 物理学 2019-01-14 Oliver T. Schmidt , Aaron Towne

We propose a method to account for the Earth oblateness effect in preliminary orbit determination of satellites in low orbits with radar observations. This method is an improvement of the one described in (Gronchi et al 2015), which uses a…

空间物理 · 物理学 2018-10-24 Helene Ma , Giovanni F. Gronchi , Davide Bracali Cioci

Modal decomposition methods are important for characterizing the low-dimensional dynamics of complex systems, including turbulent flows. Different methods have varying data requirements and produce modes with different properties. Spectral…

流体动力学 · 物理学 2025-08-28 Caroline Cardinale , Steven L. Brunton , Tim Colonius

The emerging Internet of Things (IoT) applications, such as driverless cars, have a growing demand for high-precision positioning and navigation. Nowadays, LiDAR inertial odometry becomes increasingly prevalent in robotics and autonomous…

机器人学 · 计算机科学 2025-03-10 Chengwei Zhao , Kun Hu , Jie Xu , Lijun Zhao , Baiwen Han , Kaidi Wu , Maoshan Tian , Shenghai Yuan

In 2D/3D object detection task, Intersection-over-Union (IoU) has been widely employed as an evaluation metric to evaluate the performance of different detectors in the testing stage. However, during the training stage, the common distance…

计算机视觉与模式识别 · 计算机科学 2019-08-13 Dingfu Zhou , Jin Fang , Xibin Song , Chenye Guan , Junbo Yin , Yuchao Dai , Ruigang Yang

Traditional monocular direct visual odometry (DVO) is one of the most famous methods to estimate the ego-motion of robots and map environments from images simultaneously. However, DVO heavily relies on high-quality images and accurate…

计算机视觉与模式识别 · 计算机科学 2021-04-20 Chaoqiang Zhao , Yang Tang , Qiyu Sun , Athanasios V. Vasilakos

We propose DOPS, a fast single-stage 3D object detection method for LIDAR data. Previous methods often make domain-specific design decisions, for example projecting points into a bird-eye view image in autonomous driving scenarios. In…

计算机视觉与模式识别 · 计算机科学 2020-04-08 Mahyar Najibi , Guangda Lai , Abhijit Kundu , Zhichao Lu , Vivek Rathod , Thomas Funkhouser , Caroline Pantofaru , David Ross , Larry S. Davis , Alireza Fathi

This paper presents an efficient way of detecting directed objects by predicting their center coordinates and direction angle. Since the objects are of uniform size, the proposed model works without predicting the object's width and height.…

计算机视觉与模式识别 · 计算机科学 2023-08-10 Đorđe Nedeljković

Monocular visual inertial odometry (VIO) has facilitated a wide range of real-time motion tracking applications, thanks to the small size of the sensor suite and low power consumption. To successfully bootstrap VIO algorithms, the…

机器人学 · 计算机科学 2025-02-25 Junlin Song , Antoine Richard , Miguel Olivares-Mendez

Reliable out-of-distribution (OOD) detection is fundamental to implementing safer modern machine learning (ML) systems. In this paper, we introduce Igeood, an effective method for detecting OOD samples. Igeood applies to any pre-trained…

Despite the substantial progress of active learning for image recognition, there still lacks an instance-level active learning method specified for object detection. In this paper, we propose Multiple Instance Active Object Detection…

计算机视觉与模式识别 · 计算机科学 2021-04-07 Tianning Yuan , Fang Wan , Mengying Fu , Jianzhuang Liu , Songcen Xu , Xiangyang Ji , Qixiang Ye

Modern autonomous vehicles rely heavily on mechanical LiDARs for perception. Current perception methods generally require 360{\deg} point clouds, collected sequentially as the LiDAR scans the azimuth and acquires consecutive wedge-shaped…

计算机视觉与模式识别 · 计算机科学 2022-09-13 Mazen Abdelfattah , Kaiwen Yuan , Z. Jane Wang , Rabab Ward

Detecting out-of-distribution (OOD) data is crucial for ensuring the safe deployment of machine learning models in real-world applications. However, existing OOD detection approaches primarily rely on the feature maps or the full gradient…

计算机视觉与模式识别 · 计算机科学 2023-08-02 Sima Behpour , Thang Doan , Xin Li , Wenbin He , Liang Gou , Liu Ren

The increasing congestion in the near-Earth space environment has amplified the need for robust and efficient conjunction analysis techniques including the computation of the minimum distance between orbital paths in the presence of…

地球与行星天体物理 · 物理学 2024-10-29 Ana S. Rivero , Giulio Baù , Rafael Vazquez , Claudio Bombardelli

In this paper, we present the Trifo Visual Inertial Odometry (Trifo-VIO), a tightly-coupled filtering-based stereo VIO system using both points and lines. Line features help improve system robustness in challenging scenarios when point…

计算机视觉与模式识别 · 计算机科学 2018-09-20 Feng Zheng , Grace Tsai , Zhe Zhang , Shaoshan Liu , Chen-Chi Chu , Hongbing Hu

Incremental object detection (IOD) aims to train an object detector in phases, each with annotations for new object categories. As other incremental settings, IOD is subject to catastrophic forgetting, which is often addressed by techniques…

计算机视觉与模式识别 · 计算机科学 2023-04-07 Yaoyao Liu , Bernt Schiele , Andrea Vedaldi , Christian Rupprecht

Out-of-distribution (OOD) object detection is an important yet underexplored task. A reliable object detector should be able to handle OOD objects by localizing and correctly classifying them as OOD. However, a critical issue arises when…

计算机视觉与模式识别 · 计算机科学 2026-03-18 Sadia Ilyas , Annika Mütze , Klaus Friedrichs , Thomas Kurbiel , Matthias Rottmann

We develop a Learning Direct Optimization (LiDO) method for the refinement of a latent variable model that describes input image x. Our goal is to explain a single image x with an interpretable 3D computer graphics model having scene graph…

计算机视觉与模式识别 · 计算机科学 2020-05-08 Lukasz Romaszko , Christopher K. I. Williams , John Winn

LiDAR odometry (LO) describes the task of finding an alignment of subsequent LiDAR point clouds. This alignment can be used to estimate the motion of the platform where the LiDAR sensor is mounted on. Currently, on the well-known KITTI…

计算机视觉与模式识别 · 计算机科学 2021-06-15 Philipp Adis , Nicolas Horst , Mathias Wien

Real-time object pose estimation is necessary for many robot manipulation algorithms. However, state-of-the-art methods for object pose estimation are trained for a specific set of objects; these methods thus need to be retrained to…

计算机视觉与模式识别 · 计算机科学 2022-04-28 Qiao Gu , Brian Okorn , David Held