NDLI: Non-linear calibration optimisation based on the Levenberg

Content Provider	IET Digital Library
Author	Hu, Guoliang Zhou, Zuofeng Cao, Jianzhong Huang, Huimin
Abstract	An outstanding calibration algorithm is the most important factor that affects the precision of attitude measurement. This study proposes a non-linear optimisation algorithm to refine the solutions of the initial guess obtained using the Zhang's technique, the Bouget's technique, or the Hartley's algorithm. Large sets of point correspondences were adopted to test the validity of the proposed method. Extensive practical experiments demonstrated that the proposed method can significantly improve the accuracy of calibration and ultimately obtains higher measurement precision. The error of the reprojection in the proposed method was <0.13 px. At a range of 1 m, the error rate was 0.5% for the length test and about 3% for the angle test. This study proposes a new method to calibrate the relationship between laser radar and the camera. Binocular vision was used to reconstruct the point cloud of the non-cooperative target. At the same time, data was also obtained using laser radar. Finally, the two groups of systems were fused. Accurate and dense three-dimensional information of the target was obtained. It could not only obtain the dense pose information of the target surface but also the texture and colour feature information of the target surface.
Starting Page	1402
Ending Page	1414
Page Count	13
ISSN	17519659
Volume Number	14
e-ISSN	17519667
Issue Number	Issue 7, May (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-ipr/14/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-ipr.2019.1489
Journal	IET Image Processing
Publisher Date	2020-02-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Attitude Measurement Binocular Vision Bouget Technique Calibration Camera Hartley Algorithm Image Sonsor Laser Radar Levenberg–Marquardt Algorithm Measurement Standard And Calibration Nonlinear Calibration Optimisation Nonlinear Optimisation Algorithm Nonlinear Programming Optical Radar Optimisation Technique Point Cloud Zhang Technique
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering Computer Vision and Pattern Recognition Software

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