Results 251 to 260 of about 792,653 (314)

Automatic and Targetless LiDAR–Camera Extrinsic Calibration Using Edge Alignment

IEEE Sensors Journal, 2023
In this article, an automatic and targetless extrinsic calibration method is proposed for the light detection and ranging (LiDAR)–camera system, which can calibrate extrinsic parameters from coarse to fine in natural scenes.
Jun Yin, Fei Yan, Yisha Liu
exaly   +2 more sources

Automated Extrinsic Calibration of Multi-Cameras and LiDAR

IEEE Transactions on Instrumentation and Measurement
In intelligent driving systems, the multisensor fusion perception system comprising multiple cameras and LiDAR has become a crucial component. It is essential to have stable extrinsic parameters among devices in a multisensor fusion system to achieve all-
Xinyu Zhang, Yijin Xiong, Qianxin Qu, Shifan Zhu, Shichun Guo, Dafeng Jin, Guoying Zhang, Haibing Ren, Jun Li   +8 more
semanticscholar   +2 more sources

Joint Intrinsic and Extrinsic Calibration of Perception Systems Utilizing a Calibration Environment

IEEE Robotics and Automation Letters
Basically all multi-sensor systems must calibrate their sensors to exploit their full potential for state estimation such as mapping and localization. In this letter, we investigate the problem of extrinsic and intrinsic calibration of perception systems.
Louis Wiesmann, Thomas L¨abe, Lucas Nunes, Jens Behley, C. Stachniss   +4 more
semanticscholar   +2 more sources

A Minimal Solution for the Extrinsic Calibration of a Camera and a Laser-Rangefinder

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2012
This paper presents a new algorithm for the extrinsic calibration of a perspective camera and an invisible 2D laser-rangefinder (LRF). The calibration is achieved by freely moving a checkerboard pattern in order to obtain plane poses in camera coordinates and depth readings in the LRF reference frame.
João P Barreto, Urbano Nunes, FRANCISCO Vasconcelos   +2 more
exaly   +3 more sources

Underwater Visual Acoustic SLAM with Extrinsic Calibration

2021 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2021
Underwater scenarios are challenging for visual Simultaneous Localization and Mapping (SLAM) due to limited visibility and intermittently losing structures in image views. In this paper, we propose a visual acoustic bundle adjustment system which fuses a
Shida Xu, Tomasz Luczynski, Jonatan Scharff Willners, Ziyang Hong 0001, Kaicheng Zhang, Yvan R. Petillot, Sen Wang 0002   +6 more
openaire   +2 more sources

Targetless Extrinsic Calibration of Multiple Small FoV LiDARs and Cameras Using Adaptive Voxelization

IEEE Transactions on Instrumentation and Measurement, 2022
Determining the extrinsic parameter between multiple LiDARs and cameras is essential for autonomous robots, especially for solid-state LiDARs, where each LiDAR unit has a very small Field-of-View (FoV), and multiple units are often used collectively. The
Xiyuan Liu, Chongjian Yuan, Fu Zhang
exaly   +2 more sources

Extrinsic and depth calibration of ToF-cameras

2008 IEEE Conference on Computer Vision and Pattern Recognition, 2008
Recently, ToF-cameras have attracted attention because of their ability to generate a full 2 1/2D depth image at video frame rates. Thus, ToF-cameras are suitable for real-time 3D tasks such as tracking, visual servoing or object pose estimation. The usability of such systems mainly depends on an accurate camera calibration.
Fuchs, Stefan, Hirzinger, Gerd
openaire   +2 more sources

Extrinsic calibration of a ground penetrating radar

2016 IEEE International Conference on Automation Science and Engineering (CASE), 2016
To develop a multi-modal in-traffic bridge deck scanning device, we need to calibrate extrinsic parameters of a ground penetrating radar (GPR). GPR output is in a non-Euclidean coordinate system because it only detects underground objects relative to road surface.
Chieh Chou, Shu-Hao Yeh, Jingang Yi, Dezhen Song   +3 more
openaire   +1 more source

L2V2T2Calib: Automatic and Unified Extrinsic Calibration Toolbox for Different 3D LiDAR, Visual Camera and Thermal Camera

2023 IEEE Intelligent Vehicles Symposium (IV), 2023
Extrinsic calibration between LiDAR-Camera and LiDAR-LiDAR has been researched extensively, because it is the foundation for sensor fusion. Meanwhile, many projects are open-sourced and significantly promote related research.
Jun Zhang, Yiyao Liu, Mingxing Wen, Yufeng Yue, H. Zhang, Danwei W. Wang   +5 more
semanticscholar   +1 more source

Calibration for Camera-Motion Capture Extrinsics

2018 International Conference on Image and Vision Computing New Zealand (IVCNZ), 2018
Motion capture is commonly used to track the 3D pose of a camera in order to provide accurate ground truth data for computer vision algorithms such as visual odometry, SLAM and object tracking. However, it is challenging to manually align the coordinate frame of a camera and a motion capture-tracked object.
Sam D. Schofield, Matthew J. Edwards, Richard D. Green   +2 more
openaire   +1 more source