Results 201 to 210 of about 76,204 (254)
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A novel method for camera external parameters online calibration using dotted road line
Advanced Robotics, 2014On board camera is the most important information source for driver assistant application which is based on computer vision. One problem for on board camera is that the external parameters are easy to be changed when moving on the road. Traditional method either calibrates external parameters offline or calibrates external parameters semi-online, which
Weigong Zhang +2 more
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Auto-calibration and real-time external parameter correction for stereo digital image correlation
Optics and Lasers in Engineering, 2019Abstract Calibrating stereo digital image correlation (stereo-DIC) is crucial for 3D deformation measurements. Existing stereo-DIC calibration methods mainly rely on a well-made planar target with additional specific coding to perform pre-calibration.
, , Shuai Dong
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A Multi-Sensor External Parameter Synchronous Calibration Method Based on Hand-Eye Calibration
2023 6th International Conference on Robotics, Control and Automation Engineering (RCAE), 2023Xiaochao Ci +4 more
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A progressive online external parameter calibration and initialization method for stereo-IMU system
Industrial Robot: the international journal of robotics research and application, 2021Purpose This paper aims to present a pipeline to progressively deal with the online external parameter calibration and estimator initialization of the Stereo-inertial measurement unit (IMU) system, which does not require any prior information and is suitable for system initialization in a variety of environments.
Yanwu Zhai, Haibo Feng, Yili Fu 0001
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Calibration of the geometric parameters of robots without external sensors
Proceedings of 1995 IEEE International Conference on Robotics and Automation, 2002This paper presents a new method for the calibration of the geometric parameters of the links and tool of serial robots. The main characteristics of the method is that no external sensor is needed (only the position sensors of the joints are required), and that it can be put to practice quickly and precisely.
Wisama Khalil +2 more
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Camera calibration external parameters amendments in vision measuring
SPIE Proceedings, 2012In the field of vision measuring, camera calibration is a necessary precondition of the three-dimensional measurements. For the sake of obtaining high-precision external parameters, the inadequacies which cycling conditions restrict external parameters calculation in traditional calibration method was founded and elaborated in detail. The re-projection
Yexin Zhao, Xiaoping Lou, Naiguang Lv
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Carcorder Camera Calibration method of external parameters based on lane line
2020 7th International Conference on Information Science and Control Engineering (ICISCE), 2020The calibration of the camera’s internal and external parameters is the basis for constructing a three-dimensional world from a two-dimensional plane. It is also the basis for corresponding point matching and image stitching. The accuracy of camera parameter calibration directly affects the accuracy of the restoration of the three-dimensional world ...
Guo-hang Shan, Qian Li, Shuang-cheng Jia
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Estimation of Internal and External Parameters for Camera Calibration Using 1D Pattern
2006 IEEE International Conference on Video and Signal Based Surveillance, 2006Camera calibration is to estimate the intrinsic and extrinsic parameters of a camera. Most of object-based calibration methods used 3D or 2D pattern. A novel and more flexible 1D object-based calibration was introduced only a couple of years ago, but merely for estimation of intrinsic parameters.
Xiangjian He +5 more
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A General Algorithm to Recover External Camera Parameters from Pairwise Camera Calibrations
2008This paper presents a general constructive algorithm to recover external camera parameters from a set of pairwise partial camera calibrations embedded in the structure named Camera Dependency Graph(CDG) [1] that encompasses both the feasibility and the reliability of each calibration.
Jaume Vergés-Llahí, Toshikazu Wada
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Online Self-calibration of Camera-IMU External Parameters and IMU Initialization for Stereo VI-SLAM
2020 39th Chinese Control Conference (CCC), 2020The positioning accuracy of simultaneous localization and mapping (SLAM) system based on visual and IMU fusion depends on accurate IMU initialization and external parameters between camera and IMU to a large extent. Hence, the SLAM system recalibrated when the relative position of the camera and IMU changed.
Jian Peng +3 more
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