Cloud and Cloud Shadow Detection Algorithm for Gaofen-4 Satellite Data

Xinyan Liu; Lin Sun; Yikun Yang; Xueying Zhou; Quan Wang; Tingting Chen

doi:10.3788/AOS201939.0128001

Journals >Acta Optica Sinica >Volume 39 >Issue 1 >Page 0128001 > Article

Acta Optica Sinica
Vol. 39, Issue 1, 0128001 (2019)

Cloud and Cloud Shadow Detection Algorithm for Gaofen-4 Satellite Data

Xinyan Liu^*, Lin Sun^*, Yikun Yang, Xueying Zhou, Quan Wang, and Tingting Chen

Author Affiliations

College of Surveying Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266510, China

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DOI: 10.3788/AOS201939.0128001 Cite this Article Set citation alerts

Xinyan Liu, Lin Sun, Yikun Yang, Xueying Zhou, Quan Wang, Tingting Chen. Cloud and Cloud Shadow Detection Algorithm for Gaofen-4 Satellite Data[J]. Acta Optica Sinica, 2019, 39(1): 0128001 Copy Citation Text

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Fig. 1. Spectral characteristics of different features in reflectance bands

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Fig. 2. Flow chart of GF-4 cloud detection algorithm

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Fig. 3. Geometric relationship between clouds and cloud shadows

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Fig. 4. Flow chart of GF-4 cloud shadow detection algorithm

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Fig. 5. Cloud detection results of different clouds in different regions

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Fig. 6. Cloud shadow detection results of different clouds in different regions

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Fig. 7. Comparison of cloud shadow detection results of DST with CCM

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Underlying surface	Images	Correct /%	Commission rate /%	Omission rate /%	Sky correct /%
Bare soil	A1	85.53	0.76	14.47	99.24
	A2	89.48	0.92	10.52	99.08
	A3	82.94	0.38	17.05	99.62
Desert	B1	89.28	2.41	10.72	97.59
	B2	94.76	10.21	5.24	89.79
	B3	82.26	0.92	17.74	99.08
Vegetation	C1	92.99	0.42	7.01	99.58
	C2	90.61	0.11	9.39	99.89
	C3	95.47	2.22	4.53	97.78
Water	D1	91.46	0.73	8.54	99.27
	D2	92.84	3.88	7.16	96.12
	D3	84.32	0.18	15.68	99.82

Table 1. Quantitative analysis of cloud image pixel detection results

Underlying surface	Images	Correct /%	Commission rate /%	Omission rate /%	Sky correct /%
Bare soil	A1	78.40	0.08	21.60	99.92
	A2	88.71	3.45	11.29	96.55
	A3	71.93	0.20	11.42	99.80
Desert	B1	88.58	1.96	11.42	98.04
	B2	70.22	0.70	29.78	99.30
	B3	88.65	3.25	11.35	96.75
Vegetation	C1	86.79	0.62	13.21	99.38
	C2	84.92	0.38	15.08	99.62
	C3	81.76	0.13	18.24	99.87
Water	D1	86.61	2.01	13.39	97.99
	D2	88.86	3.09	11.14	96.91
	D3	97.96	0.53	12.04	99.47

Table 2. Quantitative analysis of cloud shadow image pixel detection results

Xinyan Liu, Lin Sun, Yikun Yang, Xueying Zhou, Quan Wang, Tingting Chen. Cloud and Cloud Shadow Detection Algorithm for Gaofen-4 Satellite Data[J]. Acta Optica Sinica, 2019, 39(1): 0128001

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