Researching | Extraction Method of Urban Area From GF-6 Satellite

Laser & Optoelectronics Progress, Volume. 58, Issue 4, 0428003(2021)

Extraction Method of Urban Area From GF-6 Satellite

Changdong Ji and Zhonglin Kang^*

Author Affiliations

Collage of Mapping and Geographical Science, Liaoning Technical University, Fuxin, Liaoning 123000, China

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Figures&Tables (8)

References (20)

Paper Information

Figures & Tables(8)

Fig. 1. Color photos of test data. (a) Baoji city; (b) Rizhao city; (c) Baoding city

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Fig. 2. Spectral curves of different ground features

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Fig. 3. Results of extraction of built-up areas by different index methods. (a) VrNIR-BI method; (b) VgNIR-BI method; (c) NBAEI method

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Table 1. Overview of test area

Table 1. Overview of test area

Sensor	City type	Test city	City location	Acquisition time	Image size/(pixel×pixel)
GF-6	Valley city	Baoji	36.56̊N, 101.74̊E	2018-10-02	2000×2000
	Coastal city	Rizhao	35.42̊N, 119.46̊E	2018-06-23	1800×1800
	Plain city	Baoding	20.02̊N, 110.35̊E	2018-09-06	2000×2000

Table 2. Extraction accuracy of VrNIR-BI method
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Table 2. Extraction accuracy of VrNIR-BI method
City P_T/% P_F/% P_L/%
Baoji 78.00 70.88 30.30
Rizhao 85.00 35.71 21.74
Baoding 92.00 14.17 16.79
Average 85.00 40.25 22.94

Table 3. Extraction accuracy of VgNIR-BI method
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Table 3. Extraction accuracy of VgNIR-BI method
City P_T/% P_F/% P_L/%
Baoji 95.60 17.64 41.67
Rizhao 88.00 24.59 31.34
Baoding 91.00 13.43 12.58
Average 91.53 18.55 28.53

Table 4. Extraction accuracy of NBAEI method
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Table 4. Extraction accuracy of NBAEI method
City P_T/% P_F/% P_L/%
Baoji 95.00 8.80 9.00
Rizhao 96.63 16.33 19.03
Baoding 93.67 21.83 21.57
Average 95.10 15.65 18.53

Table 5. Average extraction accuracy of three methods
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Table 5. Average extraction accuracy of three methods
City Average extraction accuracy/%
VrNIR-BI VgNIR-BI NBAEI
Valley 92.00 88.80 94.52
Coastal 86.63 92.33 96.30
Plain 93.67 86.83 94.22

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Changdong Ji, Zhonglin Kang. Extraction Method of Urban Area From GF-6 Satellite[J]. Laser & Optoelectronics Progress, 2021, 58(4): 0428003

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Paper Information

Category: Remote Sensing and Sensors

Received: Jun. 16, 2020

Accepted: Jul. 9, 2020

Published Online: Feb. 22, 2021

The Author Email: Kang Zhonglin (1005699264@qq.com)

DOI:10.3788/LOP202158.0428003

Topics

laser devices and laser physics

Lasers and Laser Optics

laser manufacturing

Instrumentation, Measurement and Metrology