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Identification of Cotton Using Random Forest Based on Wide-Band Imaging Spectrometer Data of Tiangong-2

  • Xiaojun She
  • Kangyu Fu
  • Jie Wang
  • Wenchao Qi
  • Xiaolu Li
  • Shuangling Fu
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 541)

Abstract

Crop identification needs the relatively high spatial, temporal and spectral resolution due to the similarity spectral or spatial features of crops. Tiangong-2 (TG-2) Space Laboratory which payloads the Wide-band Imaging Spectrometer (WIS) can provide 14 bands covering from visible to near-infrared (VIS-NIR) wavelength with spatial resolution of 100 m and a repeat circle of 3 days. The high resolution of spatial-spectral-temporal is of promising advantage in precision crops identification. Random forest (RF) is a powerful machine learning classifier and has a good potential in the remote sensing classification. In this paper, TG-2 WIS image was used to extract the cotton in Xinjiang area with field experimental validation. RF along with support vector machine (SVM) and maximum likelihood classification (MLC) were utilized and compared in the cotton classification study. Three types of features of principal component, texture feature and spectral index are extracted for the three classifiers. A total of 29 features are used as input bands for MLC, SVM and RF. The results showed that RF was superior to the other methods. The overall accuracy and Kappa coefficients of RF are 91.2% and 0.871, respectively. This paper proves that the RF classification method has a good effect in the vegetation extraction of TG-2 data and positive significance for expanding the application of TG-2 data.

Keywords

Tiangong-2 Cotton extraction Random forest 

Notes

Acknowledgments

Thanks to China Manned Space Engineering for providing space science and application data products of Tiangong-2. This research is jointly sponsored by the Doctoral Fund of Southwest University (Grant No. SWU116083) and the Fundamental Research Funds for the Central Universities of China (Grant No. XDJK2018C016).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Xiaojun She
    • 1
    • 2
  • Kangyu Fu
    • 1
    • 2
  • Jie Wang
    • 1
    • 2
  • Wenchao Qi
    • 3
    • 4
  • Xiaolu Li
    • 1
    • 2
  • Shuangling Fu
    • 5
  1. 1.Chongqing Engineering Research Center for Remote Sensing Big Data Application, School of Geographical SciencesSouthwest UniversityChongqingChina
  2. 2.Research Base of Karst Ecoenvironments at Nanchuan in Chongqing, Ministry of Nature Resources, School of Geographical SciencesSouthwest UniversityChongqingChina
  3. 3.State Key Laboratory of Remote SensingInstitute of Remote Sensing and Digital Earth, Chinese Academy of SciencesBeijingChina
  4. 4.University of Chinese Academy of SciencesBeijingChina
  5. 5.China Coal Technology and Engineering Group Chongqing Research InstituteChongqingChina

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