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- W3005325963 abstract "Abstract This work presents an easy method for barchan dunes automatic extraction from multispectral satellite data. The proposed method based on unsupervised classifications of commonly used bands for sand dunes mapping in literature. First, the collected data were atmospherically and spatially enhanced. Moreover, each selected band (band ratio or redness index or crust index) were filtered using low-pass (3x3) filter and transformed with original image (non-filtered) by using principal component analysis (PCA). Additionally, the classifications were achieved for each selected band by using three different algorithms (K-means, Expectation Maximization (EM), and IsoData) after data transformation. Eventually, the obtained maps were segmented and compared with natural colour image. The results indicate that unsupervised classification of crust index selected band, which achieved by IsoData algorithm, presents high performance for barchan dunes detection." @default.
- W3005325963 created "2020-02-14" @default.
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- W3005325963 date "2020-01-01" @default.
- W3005325963 modified "2023-10-01" @default.
- W3005325963 title "An easy method for barchan dunes automatic extraction from multispectral satellite data" @default.
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- W3005325963 doi "https://doi.org/10.1088/1755-1315/419/1/012015" @default.
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