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A change type determination method based on knowledge of spectral changes in land cover types

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Abstract

Accurate information on change types is widely used in areas such as territorial spatial planning and dynamic monitoring of land cover, etc. Change type information is usually obtained using the post-classification comparison method. However, such methods are susceptible to the accumulation of errors due to the classification results, which in turn affects the accuracy of change type information identification. In response to the above problems, a change type determination method based on knowledge of spectral changes in land cover types (KSC-LCT) is proposed. Firstly, the change vector analysis method is used to obtain the change magnitude map, and the threshold value is calculated using the OTSU method to obtain the change regions. Secondly, some samples of land cover types are selected to calculate the mean value of each land cover type, and the spectral knowledge information of different land cover type changes is carved from the perspectives of spectral mean change, spectral angle change and thematic index change. Finally, based on the classification data of the previous moment and spectral change knowledge information, knowledge matching is carried out with the spectral change information of remote sensing images in the changed areas, and the minimum value of the matching result is selected as the judgment criterion to obtain the final change type of land cover. The experimental results show that the KSC-LCT method can effectively improve the recognition accuracy of land cover change type information and further reduce the phenomenon of over-detection in the change areas.

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Data Availability

Data are available on the United States Geological Survey website (https://earthexplorer.usgs.gov/).

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Acknowledgements

The authors would like to thank the editors and the anonymous reviewers for their constructive comments and suggestions, which greatly helped to improve the quality of the manuscript.

Funding

This work was supported by the key program of National Natural Science Foundation of China [grant number 41930650] and the general program of National Natural Science Foundation of China [grant number 42271435].

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All authors were involved in the conception and design of the study. Material preparation, data collection, analysis and methodology were carried out by Linye Zhu, Huaqiao Xing, Longfei Zhao, Hui Qu, Wenbin Sun. The first draft of the manuscript was written by Linye Zhu, Huaqiao Xing and Wenbin Sun, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Wenbin Sun.

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Communicated by H. Babaie

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Zhu, L., Xing, H., Zhao, L. et al. A change type determination method based on knowledge of spectral changes in land cover types. Earth Sci Inform 16, 1265–1279 (2023). https://doi.org/10.1007/s12145-023-00968-y

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  • DOI: https://doi.org/10.1007/s12145-023-00968-y

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