基于指數(shù)的遙感影像決策樹分類方法
[Abstract]:In this study, 20 spectral indices of water body, vegetation index, building index and soil index were calculated by using Landsat-8 multi-spectral image as data source and Harbin city as study area. The decision tree classification method based on index is used to extract land cover types, and the accuracy of classification results is verified, and the effects of different indices on classification accuracy are compared and analyzed. After precision comparison, five groups of data were selected as variables and classified by decision tree method, and compared with the classification results of the (common) decision tree and the maximum likelihood method. The results show that the classification accuracy of the five groups of decision trees based on index is higher than that of the ordinary decision trees and the traditional maximum likelihood method. The group with the highest classification accuracy is compared with the above two kinds of classification results. The total precision was increased by 2.59% and 9.55%, respectively, and the Kappa coefficient was increased by 0.08 and 0.15, respectively. This study presents the advantage of decision tree classification method based on index in extracting land use information, which provides a basis for better coordination of land use and urban expansion in Harbin.
【作者單位】: 哈爾濱師范大學(xué)地理科學(xué)學(xué)院;黑龍江省普通高等學(xué)校地理環(huán)境遙感監(jiān)測重點(diǎn)實(shí)驗(yàn)室;
【基金】:國家自然科學(xué)基金(41571199) 黑龍江省自然科學(xué)基金項(xiàng)目(ZD201308);黑龍江省自然科學(xué)基金青年項(xiàng)目(QC2016050)
【分類號】:P237
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