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SVM-based classification of multi-temporal Sentinel-2 imagery of dense urban land cover of Delhi-NCR region

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Abstract

The technological breakthrough and the availability of multispectral remote sensing data have given rise to an ambitious challenge for the classification of the multispectral images accurately to support administrative bodies in decision-making. In this paper, the multi-temporal medium resolution Sentinel-2 imagery of the densely populated urban area of Delhi-NCR is classified using SVM into five different land cover classes, namely water bodies, barren land, vegetative region, road network, and residential areas. Further, the effect of different kernel functions of SVM on land cover classification performance is contrasted and the radial basis function (RBF) leads to the best results. The experimental results are compared with the maximum likelihood classification (MLC) method on different evaluation metrics. The SVM with RBF kernel shows promising improvements in the overall accuracy by 10% relative to the polynomial kernel and by 3% compared to MLC. The analysis of multitemporal spectral imagery of the study area reflects the increase in a built-up area (road network, Buildings), water bodies, and decrement in the area of barren land and vegetation.

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Data availability

The datasets used in the current study are freely available from earth USGS earth explorer (https://earthexplorer.usgs.gov/) or can be available from the corresponding author upon reasonable request.

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Authors

Contributions

Yash Khurana and Pramod Kumar Soni conceived planned Material preparation, and data collection and carried out the experiments. Pramod Kumar Soni and Devershi Pallavi Bhatt contributed to sample preparation and interpretation of the results. The corresponding author took the lead in writing the manuscript. All authors provided critical feedback and helped shape the research, analysis, and manuscript. All authors read and approved the final manuscript.

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Correspondence to Pramod Kumar Soni.

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Competing interests

The authors have no affiliation with any organization with a direct or indirect financial interest in the subject matter discussed in the manuscript. This manuscript has not been submitted to, nor is under review at, another journal or another publishing venue.

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Communicated by: H. Babaie

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Khurana, Y., Soni, P.K. & Bhatt, D.P. SVM-based classification of multi-temporal Sentinel-2 imagery of dense urban land cover of Delhi-NCR region. Earth Sci Inform 16, 1765–1777 (2023). https://doi.org/10.1007/s12145-023-01008-5

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  • DOI: https://doi.org/10.1007/s12145-023-01008-5

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