Yu Wu, Xiaoxiang Long, Jian Yang, Qijin Han, Qingpeng Li, Song Li. Laser Spot Center Positioning Method in Gaofen-7 Footprint Camera[J]. Acta Optica Sinica, 2021, 41(17): 1728001
- Acta Optica Sinica
- Vol. 41, Issue 17, 1728001 (2021)
![Block diagram of laser emission and monitoring system[10]](/richHtml/gxxb/2021/41/17/1728001/img_1.jpg)
Fig. 1. Block diagram of laser emission and monitoring system[10]
Fig. 2. Images taken by LFC in synchronous exposure mode
Fig. 3. Spot images in asynchronous mode. (a) Ground image 1; (b) spot image; (c) ground image 2
Fig. 4. Flowchart of spot center positioning
Fig. 5. Spot image without noise
Fig. 6. Typical gray histograms of different types of images. (a) Spot image; (b) weak noise image; (c) moderate noise image; (d) strong noise image
Fig. 7. Typical example of test image. (a) Test image of weak noise; (b) test image of moderate noise; (c) test image of strong noise
Fig. 8. Error scatter distribution of Gaussian fitting center location method under different noise conditions. (a) Weak noise image; (b) moderate noise image; (c) strong noise image
Fig. 9. Error scatter distribution of Gaussian fitting center location method at night
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