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分步迭代的多光谱遥感水体信息高精度自动提取
Authors
李均力
沈占锋
+3 more
盛永伟
郜丽静
骆剑承
Publication date
1 January 2009
Publisher
Abstract
以LANDSAT卫星遥感数据为信息源,在归一化差异水指数(NDWI)计算的基础上,采用"全域—局部"的分步迭代空间尺度转换机制,将全域分割、全域分类、局部分割与分类等计算过程有机地结合起来,分阶段地融合了水体信息提取所需的不同层次知识,并建立迭代算法实现了水体最佳边缘的逐步逼近,获得了高精度的水体信息提取。通过对青藏高原试验区湖泊信息提取的实验表明,该方法除了能够实现对复杂多样的水体信息进行高精度自动提取外,还可有效避免与阴影等信息的混淆
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016