High Power Laser and Particle Beams, Volume. 35, Issue 2, 029001(2023)
Neutral beam infrared image distortion correction based on vanishing point detection
Figures & Tables(10)
Fig. 8. Comparison of detection results of each line segment detection algorithm
Table 1. Line segment clustering algorithm
View tableView in ArticleTable 1. Line segment clustering algorithm
algorithm line segment clustering algorithm based on line segment relation input the sample set D = {L1,L2,…,Lm}, L means coordinate values of two endpoints of a line segment output coordinates of vanishing points 1: R = $ \varnothing $ 2: fori = 1,2,…,mdo 3 C= $ \varnothing $ 4: forj = 1,2….,mdo 5: calculate $ h $ betweenLi and Lj6: calculate $ \Delta \theta $ between Li and Lj7: if $ h $ ＜threshold and$ \Delta \theta $ ＜threshold then8: C=C $ \cup $ Lj9: remove Lj from D 10: R=R $ \cup $ C11: remove Li from D 12: take the two sets from R with the largest number of line segments. 13: use the least square method to fit the two lines in Step 12. 14: calculate the intersection of two lines. That is the vanishing point.
Table 2. Comparison of linear detection methods
View tableView in ArticleTable 2. Comparison of linear detection methods
the degree of continuous the number of lines detected in x-direction the effective number of lines detected in x-direction the number of lines detected in y-direction the effective number of lines detected in y-direction run time/s Hough transform 1 3 3 0 0 0.021 probabilistic Hough transform 0 105 98 11 0 0.014 Cannylines 0 53 44 31 24 3.08 our algorithm 1 5 5 5 5 4.61
Tools
Get Citation
Copy Citation Text
Liping Chen, Yongjian Xu, Zichen Yu, Rixin Wang, Xufeng Peng, Yizhen Xu, Ling Yu. Neutral beam infrared image distortion correction based on vanishing point detection[J]. High Power Laser and Particle Beams, 2023, 35(2): 029001
Paper Information
Category: Advanced Interdisciplinary Science
Received: Apr. 14, 2022
Accepted: Oct. 24, 2022
Published Online: Feb. 16, 2023
The Author Email: Xu Yongjian (yjxu@ipp.ac.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20