Results 91 to 100 of about 737,910 (247)

Extrinsic Calibration of 2D Laser Rangefinders Based on a Mobile Sphere

Remote Sensing, 2018
In the fields of autonomous vehicles, virtual reality and three-dimensional (3D) reconstruction, 2D laser rangefinders have been widely employed for different purposes, such as localization, mapping, and simultaneous location and mapping.
Shoubin Chen, Jingbin Liu, Teng Wu, Wenchao Huang, Keke Liu, Deyu Yin, Xinlian Liang, Juha Hyyppä, Ruizhi Chen   +8 more
doaj   +1 more source

Automatic Targetless Monocular Camera and LiDAR External Parameter Calibration Method for Mobile Robots

Remote Sensing, 2023
With the continuous development and popularization of sensor-fusion technology for mobile robots, the application of camera and light detection and ranging (LiDAR) fusion perception has become particularly important.
Ying Yu, Song Fan, Lei Li, Tao Wang, Li Li   +4 more
doaj   +1 more source

Hybrid Focal Stereo Networks for Pattern Analysis in Homogeneous Scenes

, 2013
In this paper we address the problem of multiple camera calibration in the presence of a homogeneous scene, and without the possibility of employing calibration object based methods.
A Wang, AD Bimbo, C Eyles, D Brown, D Eynard, D Nistér, DG Lowe, M Ahmed, MA Fischler, MA Lourakis, OD Faugeras, PF Sturm, R Hartley, RI Hartley, RI Hartley, RI Hartley, S Sinha, T Dang, T Svoboda, X Wang, Z Kukelova, Z Zhang   +21 more
core   +2 more sources

Multipath-Closure Calibration of Stereo Camera and 3D LiDAR Combined with Multiple Constraints

Remote Sensing
Stereo cameras can capture the rich image textures of a scene, while LiDAR can obtain accurate 3D coordinates of point clouds of a scene. They complement each other and can achieve comprehensive and accurate environment perception through data fusion ...
Jianqiao Duan, Yuchun Huang, Yuyan Wang, Xi Ye, He Yang   +4 more
doaj   +1 more source

Model-based vs. model-free visual servoing: A Performance evaluation in microsystems [PDF]

, 2007
In this paper, model-based and model-free image based visual servoing (VS) approaches are implemented on a microassembly workstation, and their regulation and tracking performances are evaluated.
Bilen, Hakan, Hocaoglu, Muhammet Ali, Hocaoğlu, Muhammet Ali, Ozgur, Erol, Unel, Mustafa, Özgür, Erol, Ünel, Mustafa   +6 more
core   +1 more source

Extrinsic parameter calibration methods of sensors present in a robot tractor

Smart Agricultural Technology
To achieve large-scale deployment of autonomous agricultural machines, a reliable and accurate perception system must be developed. Often, autonomous machines use and require data from several sensors to work optimally and safely.
Jere Knuutinen, Juha Backman, Raimo Linkolehto, Arto Visala   +3 more
doaj   +1 more source

3D Scanning System for Automatic High-Resolution Plant Phenotyping

, 2016
Thin leaves, fine stems, self-occlusion, non-rigid and slowly changing structures make plants difficult for three-dimensional (3D) scanning and reconstruction -- two critical steps in automated visual phenotyping.
Daily, Helen, Fripp, Jurgen, Furbank, Robert, Kuffner, Peter, Lovell, David R, Nguyen, Chuong V, Sirault, Xavier   +6 more
core   +1 more source

Biomimetic Active Stereo Camera System with Variable FOV

Biomimetics
Inspired by the biological eye movements of fish such as pipefish and sandlances, this paper presents a novel dynamic calibration method specifically for active stereo vision systems to address the challenges of active cameras with varying fields of view
Yanmiao Zhou, Xin Wang
doaj   +1 more source

A Convenient Calibration Method for LRF-Camera Combination Systems Based on a Checkerboard

Sensors, 2019
In this paper, a simple and easy high-precision calibration method is proposed for the LRF-camera combined measurement system which is widely used at present.
Zhuang Zhang, Rujin Zhao, Enhai Liu, Kun Yan, Yuebo Ma   +4 more
doaj   +1 more source

Visual-inertial self-calibration on informative motion segments

, 2017
Environmental conditions and external effects, such as shocks, have a significant impact on the calibration parameters of visual-inertial sensor systems. Thus long-term operation of these systems cannot fully rely on factory calibration.
Burri, Michael, Gilitschenski, Igor, Li, Mingyang, Nieto, Juan, Schneider, Thomas, Siegwart, Roland   +5 more
core   +1 more source