Picking Robot Camera Calibration System Based on OpenCV

2012 ◽  
Vol 430-432 ◽  
pp. 1963-1966 ◽  
Author(s):  
Hong Xing Peng ◽  
Xiang Jun Zou ◽  
Jun Tao Xiong ◽  
Ding Zhong Wu ◽  
Jia Hui Shen ◽  
...  
Keyword(s):  
Error Correction ◽  
Camera Calibration ◽  
High Precision ◽  
Navigation System ◽  
Geometric Model ◽  
Robot Vision ◽  
Calibration System ◽  
Vision Navigation ◽  
Equation Solution ◽  
Radial Distortion

Aim at the effect of the radial distortion and tangential distortion, the camera calibration principle, geometric model and complex equation solution were studied, in order to reduce the artificial participation in proofreading and error correction, then the camera’s software precise calibration module based on OpenCV was developed. The results showed that the system was quickly speed, high precision and could satisfy the requirements of robot vision navigation system and built the foundation for the next step research.

Design of Calibration System for a Great Quantity of High Precision Scientific Grade CCD Cameras

2013 ◽  
Vol 331 ◽  
pp. 326-330
Author(s):  
Jia Hai Tan ◽  
Peng Yu Li ◽  
You Shan Qu ◽  
Ya Meng Han ◽  
Ya Li Yu ◽  
...  
Keyword(s):  
Camera Calibration ◽  
High Precision ◽  
High Energy Physics ◽  
Dynamic Range ◽  
Ccd Camera ◽  
High Energy ◽  
Integrating Sphere ◽  
Calibration System ◽  
Ccd Cameras ◽  
System A

For the calibration of a great quantity of scientific grade CCD cameras in the high energy physics system, a scientific grade CCD camera calibration system with high precision and efficiency is designed. The designed camera calibration system consists of a 1053nm nanosecond solid-state laser, a knife, a double-integrating sphere, a laser power meter, a signal generator, a computer with its data processing software. Key technical parameters of scientific grade CCD under the condition of 1053nm optical pulses that are the modulation, contrast, defects, optical dynamic range, non-linear response can be calibrated by the designed calibration system. A double-integrating sphere with high uniformity and stability is designed as a uniform light source, which improves the calibrating performance and accuracy. Experimental results show the system designed in this paper can calibrate the large number of scientific grade CCD cameras quickly and efficiently.

Design and Research of Camera Calibration System in Binocular Stereo Vision

2011 ◽  
Vol 460-461 ◽  
pp. 219-224 ◽  
Author(s):  
Jun Tao Xiong ◽  
Xiang Jun Zou ◽  
Hai Xin Zou ◽  
Yin Le Chen ◽  
Quan Sun
Keyword(s):  
Camera Calibration ◽  
High Precision ◽  
Stereo Vision ◽  
Vision System ◽  
Calibration Method ◽  
Calibration Data ◽  
Calibration System ◽  
Binocular Stereo Vision ◽  
Reference Measure ◽  
Binocular Stereo

Aiming at the camera calibration of binocular stereo vision system, based on Zhang’s calibration method, the specified points in the calibration template obtained by the Harris operator, a set of camera calibration system combined with VC++ and Matlab was developed. The results of the calibration system, comparing with those of four-step calibration method, was analyzed and showed that: the error of calibration data in this system was within 0~5 mm, which had a high precision calibration, providing a new reference measure for the camera calibration.

Ephemeris Error Correction in Celestial Navigation System Considering Earth’s Precession-Nutation

Optik ◽  
2020 ◽  
pp. 166152
Author(s):  
Bin Gou ◽  
Ke-yu Qi ◽  
Yong-mei Cheng ◽  
Yuan-yuan Xu ◽  
Zhen Sun
Keyword(s):  
Error Correction ◽  
Navigation System ◽  
Celestial Navigation

Industrial part localization and grasping using a robotic arm guided by 2D monocular vision

2018 ◽  
Vol 45 (6) ◽  
pp. 794-804 ◽  
Author(s):  
Zhaohui Zheng ◽  
Yong Ma ◽  
Hong Zheng ◽  
Yu Gu ◽  
Mingyu Lin
Keyword(s):  
Camera Calibration ◽  
High Precision ◽  
Calibration Method ◽  
Monocular Vision ◽  
Robotic Arm ◽  
Robot Arm ◽  
Content Type ◽  
Calibration Algorithm ◽  
Target Locating ◽  
Practical Implications

Purpose The welding areas of the workpiece must be consistent with high precision to ensure the welding success during the welding of automobile parts. The purpose of this paper is to design an automatic high-precision locating and grasping system for robotic arm guided by 2D monocular vision to meet the requirements of automatic operation and high-precision welding. Design/methodology/approach A nonlinear multi-parallel surface calibration method based on adaptive k-segment master curve algorithm is proposed, which improves the efficiency of the traditional single camera calibration algorithm and accuracy of calibration. At the same time, the multi-dimension feature of target based on k-mean clustering constraint is proposed to improve the robustness and precision of registration. Findings A method of automatic locating and grasping based on 2D monocular vision is provided for robot arm, which includes camera calibration method and target locating method. Practical implications The system has been integrated into the welding robot of an automobile company in China. Originality/value A method of automatic locating and grasping based on 2D monocular vision is proposed, which makes the robot arm have automatic grasping function, and improves the efficiency and precision of automatic grasp of robot arm.

Ground Calibration System Design of High-Precision Star Sensor

2013 ◽  
Vol 694-697 ◽  
pp. 1068-1073
Author(s):  
Jie Duan ◽  
Zhi Yong An ◽  
Xiang Yang Sun
Keyword(s):  
High Precision ◽  
Optical Transmission ◽  
Angular Distance ◽  
Star Sensor ◽  
Optical Navigation ◽  
Calibration System ◽  
Large Size ◽  
High Magnitude ◽  
Design Plan ◽  
Ground Calibration

In order to meet the high precision calibration requirements of precision angular distance and high magnitude to the optical navigation sensor, A new style of high precision star simulator with large caliber, and long-focus, is presented. And then the main compositions of this simulator are designed in detail referring to the simulator, the steering mirror, the standard simulated targets and so on. According to the simulator characteristics of large size lens and multi lens, the structural of lens cone uses the tube sleeve and inner sleeves fixed together means. To eliminate the mirror deformation, the design plan based on the tiny stress is applied in steering mirror. In order to achieve a high magnitude, the light targets are simulated by optical transmission from OLED to high precision drone with fibers. Its degree ≤1〞,simulated magnitude≥5 that meet calibration requirements of the current high-precision optical navigation sensor.

scholarly journals High precision machining of a displacement sensor for helicoidal motions

2021 ◽  
Author(s):  
Zeina ELRAWASHDEH ◽  
Philippe REVEL ◽  
Christine PRELLE ◽  
Frédéric LAMARQUE
Keyword(s):  
High Precision ◽  
Fiber Optic ◽  
Geometric Model ◽  
Translational Motion ◽  
Surface Characteristics ◽  
Measurement Range ◽  
Linear Displacement ◽  
Displacement Sensor ◽  
Fiber Optic Probes

Abstract This research study presents the design and the high precision manufacture procedure of a fiber-optic displacement sensor. It is composed of two fiber-optic probes associated with a structure of a cones’ grating. The sensor is characterized by its ability to measure the linear displacement for an axis performing a helicoidal motion. This motion has been demonstrated on a high precision lathe; where the spindle provided the rotational motion, associated to a translational motion on the linear stage. This allowed to obtain the two simultaneous motions. The displacement of the translational stage is measured by the sensor in real time.Firstly, a highly precise geometric model of the reflector part for the sensor was developed. This model provided a specific geometry for the cones-assembled grating, which has been precisely manufactured. The geometric parameters and the surface characteristics of each step in the fabricated grating were both identified in situ on the lathe. The agreement between simulation and experimental results is excellent. The performances of the fiber-optic displacement sensor were identified in-situ on the lathe. The analysis of the voltage output signals from the two fiber-optic probes is used to measure the grating displacement. The unbalanced rotation due to non-centered axes was also characterized. The sensor provided a micrometric resolution, on a measurement range of more than one centimeter.

Problem of the Vertical Deflection in High-Precision Inertial Navigation

2020 ◽  
Vol 28 (4) ◽  
pp. 3-15
Author(s):  
V.G. Peshekhonov ◽  
◽  
Keyword(s):  
Systematic Error ◽  
High Precision ◽  
Navigation System ◽  
Inertial Navigation System ◽  
Inertial Navigation ◽  
Reference Ellipsoid ◽  
Navigation Systems ◽  
Vertical Deflection ◽  
Inertial Navigation Systems ◽  
Output Data

The paper addresses the systematic error of an inertial navigation system, caused by the discrepancy between the plumb line and the normal to the reference ellipsoid surface. The methods of this discrepancy estimation, and their use for correcting the output data of inertial navigation systems are studied.

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