Yong Chen, Zhen Wang, Chentao Lu. Image Feature Matching Method of High-Speed Railway Catenary with Improved AKAZE Algorithm[J]. Laser & Optoelectronics Progress, 2022, 59(10): 1010007
- Laser & Optoelectronics Progress
- Vol. 59, Issue 10, 1010007 (2022)
Fig. 1. Image feature comparison. (a) Feature extraction from original image; (b) feature extraction after fusion
Fig. 2. Schematic diagram of feature point detection in nonlinear scale space
Fig. 3. Comparison of catenary matching. (a) Rough matching results; (b) results after removing mismatches
Fig. 4. Comparison of different algorithms for catenary image matching. (a) Algorithm in Ref. [4]; (b) algorithm in Ref. [5]; (c) algorithm in Ref. [7]; (d) AKAZE algorithm; (e) proposed method
Fig. 5. Anomaly detection experiment of catenary. (a) Complete image of catenary structure; (b) missing part detection; (c) foreign body detection
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Table 1. Comparison of average accuracy of catenary image feature points matching
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Table 2. Comparison of average time of catenary feature points matching
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