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    结合相关系数和特征分析的植被区域自动变化检测研发

    Research and development of automatic detection technologies for changes in vegetation regions based on correlation coefficients and feature analysis

    • 摘要: 地表变化检测是遥感大数据应用的重要内容,为此以植被区域为研究对象,结合相关系数和特征分析提出图斑级自动变化检测应用方法并研发软件。该方法结合光谱和纹理特征构建地物相关系数,采用相似性度量方式进行植被区域的变化检测; 然后通过分析植被与其他地物类型之间的光谱差异,选择红光波段比值进行伪变化去除; 最后基于.NET框架和ArcGIS Engine二次开发组件库,设计研发了一款变化检测工具软件。导入实验数据进行变化检测,实验结果表明软件的变化检测达到94.3%的正确率和8.5%的漏检率,相对人工交互解译,软件自动化水平较高。研究结果表明所提方法和软件具有良好的应用价值。

       

      Abstract: Surface change detection is an important component of the applications of remote sensing big data. However, it is essentially subject to manual interactive interpretation in actual production. With this regard, this paper developed an application method and software for the automatic detection of changes in vegetation regions on a polygon scale using correlation coefficients and feature analysis. The details are as follows. Correlation coefficients of surface features were constructed using spectral and textural features, and then the changes in vegetation regions were detected using the similarity measurement method. According to the analysis of spectral differences between the vegetation and other types of surface features, the red band ratio was selected to remove spurious changes. Finally, the change detection software was designed and developed using the.NET framework and the ArcGIS Engine component library for secondary development. Test data were imported into the software for change detection. The test results show the accuracy rate and omission rate of the software in the change detection were 94.3% and 8.5%, respectively. Furthermore, the software has a higher automatic level compared to manual interactive interpretation. In conclusion, the method and software developed in this study can be widely applied.

       

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