Results 1 to 10 of about 86,305 (157)

TARGETLESS CAMERA CALIBRATION [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
In photogrammetry a camera is considered calibrated if its interior orientation parameters are known. These encompass the principal distance, the principal point position and some Additional Parameters used to model possible systematic errors.
L. Barazzetti, L. Mussio, F. Remondino, M. Scaioni   +3 more
doaj   +5 more sources

SUB-CAMERA CALIBRATION OF A PENTA-CAMERA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Penta cameras consisting of a nadir and four inclined cameras are becoming more and more popular, having the advantage of imaging also facades in built up areas from four directions.
K. Jacobsen, M. Gerke
doaj   +4 more sources

Camera Calibration Optimization Algorithm Based on Nutcracker Optimization Algorithm [PDF]

Sensors
Camera calibration is a core task in computer vision. Traditional calibration methods usually achieve approximate solutions due to the complexity of solving nonlinear equations, resulting in reprojection errors. This article proposes a camera calibration
Lei Li, Zelong Xiao, Taiyang Hu
doaj   +2 more sources

Geometric Wide-Angle Camera Calibration: A Review and Comparative Study [PDF]

Sensors
Wide-angle cameras are widely used in photogrammetry and autonomous systems which rely on the accurate metric measurements derived from images. To find the geometric relationship between incoming rays and image pixels, geometric camera calibration (GCC ...
Jianzhu Huai, Yuxin Shao, Grzegorz Jozkow, Binliang Wang, Dezhong Chen, Yijia He, Alper Yilmaz   +6 more
doaj   +2 more sources

Machine-Learning-Inspired Workflow for Camera Calibration [PDF]

Sensors, 2022
The performance of modern digital cameras approaches physical limits and enables high-precision measurements in optical metrology and in computer vision.
Alexey Pak, Steffen Reichel, Jan Burke
doaj   +2 more sources

Fusion calib: azimuth angle and multi frame tracking for online extrinsic radar-camera calibration [PDF]

Scientific Reports
Traditional radar-camera calibration requires manual intervention and excessive computational resources, resulting in high labor costs for maintenance in roadside perception scenarios.
Lan Cao, Haiyang Zhu, Tianiyi Gu, Guangrong Xi, Leilei Wang, Jia Luo, Zefeng Feng   +6 more
doaj   +2 more sources

NMC3D: Non-Overlapping Multi-Camera Calibration Based on Sparse 3D Map [PDF]

Sensors
With the advancement of computer vision and sensor technologies, many multi-camera systems are being developed for the control, planning, and other functionalities of unmanned systems or robots.
Changshuai Dai, Ting Han, Yang Luo, Mengyi Wang, Guorong Cai, Jinhe Su, Zheng Gong, Niansheng Liu   +7 more
doaj   +2 more sources

Calibration Techniques for Accurate Measurements by Underwater Camera Systems

Sensors, 2015
Calibration of a camera system is essential to ensure that image measurements result in accurate estimates of locations and dimensions within the object space.
Mark Shortis
doaj   +3 more sources

On-the-Fly Camera and Lidar Calibration [PDF]

Remote Sensing, 2020
Sensor fusion is one of the main challenges in self driving and robotics applications. In this paper we propose an automatic, online and target-less camera-Lidar extrinsic calibration approach. We adopt a structure from motion (SfM) method to generate 3D
Balázs Nagy, Csaba Benedek
doaj   +2 more sources

Camera Calibration Using Gray Code [PDF]

Sensors, 2019
In order to determine camera parameters, a calibration procedure involving the camera recordings of a checkerboard is usually performed. In this paper, we propose an alternative approach that uses Gray-code patterns displayed on an LCD screen.
Seppe Sels, Bart Ribbens, Steve Vanlanduit, Rudi Penne   +3 more
doaj   +2 more sources