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高精度建设用地变化自动提取技术在土地督察中的应用

DOI: 10.6046/gtzyyg.2015.04.20, PP. 131-137

Keywords: 土地督察,建设用地,变化提取,高精度

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Abstract:

为提高土地督察线索获取的快捷性和准确性,提出了一种基于稳定地物样本库的建设用地变化监测方法。首先,利用先验知识结合本底影像选取土地利用类型未发生变化的对象,形成稳定的地物样本库;然后,关联最新影像,动态筛选训练样本,实现建设用地变化自动监督分类;最后,基于先验知识对分类结果自动甄别,进行双重辅助变化信息提取,并利用相隔4个月的资源3号卫星数据开展对比试验。结果表明,该方法提取的建设用地变化位置准确率达72.82%(常规矢量监测法仅为33%),大大提高了违法用地位置信息发现的准确率,具有较高的可靠性和精度。

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