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Laser line scanners are increasingly being used in the subsea industry for high-resolution mapping and infrastructure inspection. However, calibrating the 3D pose of the scanner relative to the vehicle is a perennial source of confusion and…

机器人学 · 计算机科学 2024-03-12 Thomas Hitchcox , James Richard Forbes

A novel framework to construct an efficient sensing (measurement) matrix, called mixed adaptive-random (MAR) matrix, is introduced for directly acquiring a compressed image representation. The mixed sampling (sensing) procedure hybridizes…

信息论 · 计算机科学 2015-04-07 Jun Yang , Wei E. I. Sha , Hongyang Chao , Zhu Jin

Many learning problems require predicting sets of objects when the number of objects is not known beforehand. Examples include object detection, molecular modeling, and scientific inference tasks such as astrophysical source detection.…

机器学习 · 计算机科学 2026-01-30 Tin Hadži Veljković , Erik Bekkers , Michael Tiemann , Jan-Willem van de Meent

Depth maps captured by modern depth cameras such as Kinect and Time-of-Flight (ToF) are usually contaminated by missing data, noises and suffer from being of low resolution. In this paper, we present a robust method for high-quality…

计算机视觉与模式识别 · 计算机科学 2015-12-29 Wei Liu , Yun Gu , Chunhua Shen , Xiaogang Chen , Qiang Wu , Jie Yang

We present a technique to optimize the reflectivity of a surface while preserving its overall shape. The naive optimization of the mesh vertices using the gradients of reflectivity simulations results in undesirable distortion. In contrast,…

图形学 · 计算机科学 2023-05-11 Kenji Tojo , Ariel Shamir , Bernd Bickel , Nobuyuki Umetani

Accurate and efficient 3D mapping of large-scale outdoor environments from LiDAR measurements is a fundamental challenge in robotics, particularly towards ensuring smooth and artifact-free surface reconstructions. Although the…

图形学 · 计算机科学 2025-03-13 Hrishikesh Viswanath , Md Ashiqur Rahman , Chi Lin , Damon Conover , Aniket Bera

In autonomous driving, mapping is critical for motion planning but remains an under-utilized resource for perception tasks such as 3D object detection. Maps can provide robust structural priors of the static environment, helping resolve…

计算机视觉与模式识别 · 计算机科学 2026-05-25 Yang Fu , Yuliang Zou , Hao Xiang , Xin Huang , Yijing Bai , Chen Song , Weijing Shi , Govind Thattai , Dragomir Anguelov , Mingxing Tan , Yingwei Li

We present a general linear algorithm for measuring the surface mass density 1-\kappa from the observable reduced shear g=\gamma/(1-\kappa) in the strong lensing regime. We show that in general, the observed polarization field can be…

天体物理学 · 物理学 2009-10-31 Ue-Li Pen

Local feature matching is essential for many applications, such as localization and 3D reconstruction. However, it is challenging to match feature points accurately in various camera viewpoints and illumination conditions. In this paper, we…

计算机视觉与模式识别 · 计算机科学 2023-01-26 Yerim Jung , Nur Suriza Syazwany Binti Ahmad Nizam , Sang-Chul Lee

LiDAR mapping is important yet challenging in self-driving and mobile robotics. To tackle such a global point cloud registration problem, DeepMapping converts the complex map estimation into a self-supervised training of simple deep…

计算机视觉与模式识别 · 计算机科学 2023-06-16 Chao Chen , Xinhao Liu , Yiming Li , Li Ding , Chen Feng

A crucial aspect of mass-mapping, via weak lensing, is quantification of the uncertainty introduced during the reconstruction process. Properly accounting for these errors has been largely ignored to date. We present a new method to…

宇宙学与河外天体物理 · 物理学 2021-12-16 Matthew A. Price , Jason D. McEwen , Xiaohao Cai , Thomas D. Kitching , Christopher G. R. Wallis

Map matching and registration are essential tasks in robotics for localisation and integration of multi-session or multi-robot data. Traditional methods rely on cameras or LiDARs to capture visual or geometric information but struggle in…

机器人学 · 计算机科学 2025-08-22 William McDonald , Cedric Le Gentil , Jennifer Wakulicz , Teresa Vidal-Calleja

Sonar-based indoor mapping systems have been widely employed in robotics for several decades. While such systems are still the mainstream in underwater and pipe inspection settings, the vulnerability to noise reduced, over time, their…

机器人学 · 计算机科学 2024-09-19 Usama Saqib , Letizia Marchegiani , Jesper Rindom Jensen

Salient object detection has become an important task in many image processing applications. The existing approaches exploit background prior and contrast prior to attain state of the art results. In this paper, instead of using background…

计算机视觉与模式识别 · 计算机科学 2015-06-25 Sai Srivatsa R , R. Venkatesh Babu

Unmanned aerial vehicles (UAVs) can offer timely and cost-effective delivery of high-quality sensing data. How- ever, deciding when and where to take measurements in complex environments remains an open challenge. To address this issue, we…

机器人学 · 计算机科学 2017-03-09 Marija Popovic , Teresa Vidal-Calleja , Gregory Hitz , Inkyu Sa , Roland Siegwart , Juan Nieto

The joint optimization of the reconstruction and classification error is a hard non convex problem, especially when a non linear mapping is utilized. In order to overcome this obstacle, a novel optimization strategy is proposed, in which a…

In this paper we address the problem of unsupervised localization of objects in single images. Compared to previous state-of-the-art method our method is fully unsupervised in the sense that there is no prior instance level or category…

计算机视觉与模式识别 · 计算机科学 2018-04-12 Hakan Karaoguz , Patric Jensfelt

Poisson Surface Reconstruction is a widely-used algorithm for reconstructing a surface from an oriented point cloud. To facilitate applications where only partial surface information is available, or scanning is performed sequentially, a…

图形学 · 计算机科学 2025-06-06 Sidhanth Holalkere , David S. Bindel , Silvia Sellán , Alexander Terenin

Compressive Sensing (CS) stipulates that a sparse signal can be recovered from a small number of linear measurements, and that this recovery can be performed efficiently in polynomial time. The framework of model-based compressive sensing…

信息论 · 计算机科学 2015-04-22 Chinmay Hegde , Piotr Indyk , Ludwig Schmidt

We propose a scalable framework for the learning of high-dimensional parametric maps via adaptively constructed residual network (ResNet) maps between reduced bases of the inputs and outputs. When just few training data are available, it is…