A Fully Automatic Method to Extract Rare Earth Mining Areas from Landsat Images
A Fully Automatic Method to Extract Rare Earth Mining Areas from Landsat Images
复制标题
从陆地卫星图像中提取稀土矿区的全自动方法
DOI:
10.14358/pers.82.9.729
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发表时间:
2016-09
影响因子:
1.3
通讯作者:
Zhang Qiang
中科院分区:
文献类型:
--
作者:
Wu Bo;Fang Chaoyang;Yu Le;Huang Xin;Zhang Qiang
Abstract This paper proposes a new morphological mining feature index ( mmfi ) by synthesizing multi-scale and multi-direction differential morphological profiles (DMPs) to effectively separate rema s from other land covers with similar spectral signals and local brightness contrast. The mmfi enhances the local brightness contrast of rare earth mining areas ( rema s) by highlighting the morphological characteristics of rema structure, and improves the identification of roads and bare soil, which have similar spectral signatures to rema s. Moreover, a new threshold optimization method that maximizes the histogram entropy is presented, whereby rema s can be automatically extracted from the mmfi image without sample collection and machine learning. Therefore, it is a fully automatic method suitable for rema extraction over large areas. To validate the proposed method, three temporal Landsat images acquired of Changting County, China, were used to extract rema information. Our results demonstrate that the proposed method can achieve good classification accuracy compared with other methods.
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DOI:
--
发表时间:
2014
期刊:
--
影响因子:
--
作者:
Li Heng-ka
通讯作者:
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DOI:
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发表时间:
2012-02-01
影响因子:
5.5
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发表时间:
2005-08-11
期刊:
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发表时间:
1985-01-01
影响因子:
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