Laser & Optoelectronics Progress, Volume. 58, Issue 12, 1215006(2021)
Research on SLAM Loop Closure Detection Method Based on HHO Algorithm
Fig. 1. Contrast charts of feature point detection of improved FAST algorithm. (a) δ=0.1; (b) δ=0.2; (c) δ=0.3; (d) δ=0.4; (e) δ=0.5
Fig. 2. Comparison of feature extraction effect before and after FAST algorithm improvement.(a) Before improvement; (b) after improvement
Fig. 3. Comparison of detection results before and after FAST algorithm improvement when image brightness is reduced by 50%. (a) Before improvement; (b) after improvement
Fig. 4. Comparison of detection results before and after FAST algorithm improvement when image brightness is doubled. (a) Before improvement; (b) after improvement
Fig. 5. Feature extraction comparison of the original algorithm. (a) Original image; (b) brightness is reduced by 50%; (c) brightness is doubled
Fig. 6. Feature extraction comparison of the improved FAST algorithm. (a) Original image; (b) brightness is reduced by 50%; (c) brightness is doubled
Fig. 8. P-R curves of three loop closure detection methods. (a) On KITTI dataset; (b) on freiburg2_desk dataset
Fig. 9. Fitness change curves on freiburg2_desk dataset. (a) Current frame number is 183; (b) current frame number is 2839
Fig. 10. Fitness change curves on KITTI dataset. (a) Current frame number is 625; (b) current frame number is 3633
Fig. 11. Time comparison of three loop closure detection methods on freiburg2_desk dataset. (a) Current frame number is 183; (b) current frame number is 2839
Fig. 12. Time comparison of three loop closure detection methods on KITTI dataset. (a) Current frame number is 625; (b) current frame number is 3633
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Cuijun Zhang, Yuhe Zhang. Research on SLAM Loop Closure Detection Method Based on HHO Algorithm[J]. Laser & Optoelectronics Progress, 2021, 58(12): 1215006
Category: Machine Vision
Received: Aug. 24, 2020
Accepted: Nov. 14, 2020
Published Online: Jun. 23, 2021
The Author Email: Zhang Yuhe (862000954@qq.com)