Field Calibration Method of Camera for Measuring the Dimensions of Large Forging

2010 ◽  
pp. 285-295 ◽  
Author(s):  
Wei Liu ◽  
Jian Du ◽  
Bangguo Wang ◽  
Xinghua Jia ◽  
Shuangjun Liu ◽  
...  
Keyword(s):  
Calibration Method ◽  
Large Forging ◽  
Field Calibration

A Rapid Field Calibrating Method for MIMU

2011 ◽  
Vol 80-81 ◽  
pp. 1140-1144
Author(s):  
Yu Bao Fan ◽  
Jie Li ◽  
Bo Wang ◽  
Xiao Chun Tian ◽  
Jun Liu
Keyword(s):  
Inertial Measurement Unit ◽  
Operation Time ◽  
Calibration Method ◽  
Least Square ◽  
Measurement Unit ◽  
Calibration Model ◽  
Time Saving ◽  
Inertial Measurement ◽  
Field Calibration ◽  
Calibration Program

When the Micro Inertial Measurement Unit is been placed randomly in the case of stationary, the sum vectors that measured by the inertial devices configured orthogonally along three axis, are constant vectors. In view of the above objective facts, a field calibration method of micro inertial measurement unit was proposed. On the base of the establishment and optimization of calibration model, all parameters to be calibrated can be obtained through the least square by the ellipsoid fitting, with the result of high-precision field calibration for micro inertial measurement unit. Finally, a filed calibration program for micro inertial measurement unit is scheduled reasonably. The experiment results show that the method has such characteristics such as easily-operation, time-saving, higher calibration accuracy, and not depending on the baseline direction and datum offered by precision instruments. Especially, it fits for inertial measurement systems which work short time and ask for high accuracy. In addition, it can also significantly increase the measurement accuracy of micro inertial measurement system in practical application.

Field calibration method for nanosecond pulse differential ring

2012 ◽  
Vol 24 (2) ◽  
pp. 501-504
Author(s):  
姚伟博 Yao Weibo ◽  
张永民 Zhang Yongmin ◽  
来定国 Lai Dingguo ◽  
程亮 Cheng Liang ◽  
任书庆 Ren Shuqing ◽  
...  
Keyword(s):  
Calibration Method ◽  
Nanosecond Pulse ◽  
Field Calibration ◽  
Differential Ring

scholarly journals A Non-Linear Magnetic Field Calibration Method for Filter-Based Magnetographs by Multilayer Perceptron

Solar Physics ◽  
2020 ◽  
Vol 295 (1) ◽  
Author(s):  
Jingjing Guo ◽  
Xianyong Bai ◽  
Yuanyong Deng ◽  
Hui Liu ◽  
Jiaben Lin ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Multilayer Perceptron ◽  
Calibration Method ◽  
Field Calibration ◽  
Non Linear

scholarly journals Calibration of Industrial Cameras for Aerial Photogrammetric Mapping

2020 ◽  
Vol 12 (19) ◽  
pp. 3130
Author(s):  
Jakub Kolecki ◽  
Przemysław Kuras ◽  
Elżbieta Pastucha ◽  
Krystian Pyka ◽  
Maciej Sierka
Keyword(s):  
Survey Methodology ◽  
Calibration Method ◽  
Bundle Adjustment ◽  
Test Field ◽  
Baseline Method ◽  
Field Calibration ◽  
Custom Software ◽  
Single Process ◽  
Industrial Cameras ◽  
Very High

This paper details the development of a camera calibration method purpose-built for use in photogrammetric survey production. The calibration test field was established in a hangar, where marker coordinates were measured using a high-precision survey methodology guaranteeing very high accuracy. An analytical model for bundle adjustment was developed that does not directly use the coordinates of field calibration markers but integrates bundle adjustment and survey observations into a single process. This solution, as well as a classical calibration method, were implemented in a custom software, for which the C++ source code repository is provided. The method was tested using three industrial cameras. The comparison was drawn towards a baseline method, OpenCV implementation. The results point to the advantages of using the proposed approach utilizing extended bundle adjustment.

Characterization of a high‐frequency pressure‐field calibration method.

2010 ◽  
Vol 127 (3) ◽  
pp. 1980-1980 ◽  
Author(s):  
Dylan Alexander ◽  
Casey Barnard ◽  
Benjamin A. Griffin ◽  
Mark Sheplak
Keyword(s):  
High Frequency ◽  
Pressure Field ◽  
Calibration Method ◽  
Field Calibration

scholarly journals A nonlinear solar magnetic field calibration method for the filter-based magnetograph by the residual network

2020 ◽  
Author(s):  
Jingjing Guo ◽  
Xianyong Bai ◽  
Hui Liu ◽  
Xu Yang ◽  
Yuanyong Deng ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Solar Magnetic Field ◽  
Calibration Method ◽  
Residual Network ◽  
Field Calibration

A machine learning field calibration method for improving the performance of low-cost particle sensors

2020 ◽  
pp. 107457
Author(s):  
Satya S. Patra ◽  
Rishabh Ramsisaria ◽  
Ruihang Du ◽  
Tianren Wu ◽  
Brandon E. Boor
Keyword(s):  
Machine Learning ◽  
Low Cost ◽  
Calibration Method ◽  
Field Calibration
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