Xiaolong Li, Hongbo Cai, Huali Li, Jianyan Wei. Recognition and Analysis of Thin Clouds in Optical Astronomical Images of Large Field-of-View Ground-Based Telescope Based on Fuzzy Clustering[J]. Laser & Optoelectronics Progress, 2022, 59(16): 1610010
- Laser & Optoelectronics Progress
- Vol. 59, Issue 16, 1610010 (2022)
Fig. 1. Image of GWAC(clear night without moon). (a) Original image; (b) gray histogram; (c) histogram main peak
Fig. 2. Image of GWAC (thin clouds). (a) Original image; (b) gray histogram; (c) histogram main peak
Fig. 3. Experimental result. (a) Original image; (b) processing result
Fig. 4. Experimental result. (a) Original image; (b) processing result
Fig. 5. Experimental result. (a) Original image; (b) processing result
Fig. 6. Experimental result. (a) Original image; (b) processing result
Fig. 7. Experimental result. (a) Original image; (b) processing result
Fig. 8. Meaning of gray levels in each processing result
Fig. 9. Effect verification for FCM. (a) Image for processing; (b) image for contrast; (c) processing result; (d) cross-match result
Fig. 10. Histograms of DeltaMag by cloud level. (a) Cloud level 1; (b) cloud level 2; (c) cloud level 3; (d) cloud level 4; (5) cloud level 5
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Table 1. Correspondence between cloud level recognition results and DeltaMag median in each level
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