基于多尺度分形特征的遥感影像水体信息提取研究

Research on Extraction Information of Water Using RS Image Based on Multi-scale Fractal Signature

以密云水库为例,提出一种基于多尺度分形特征的ETM+遥感影像提取水体信息的新方法。首先利用双层地毯法计算像元的分形信号,并对其进行水体信息特征分析;其次选用下分形第4尺度进行水体信息提取,利用水体指数提取结果进行精度评价,提取精度为98.12%。该方法可以快速有效地提取水体信息,为以后水体的相关研究提供参考方法。

A new approach for water information of Miyun Reservoir to feature extraction based on multi-scale fractal signature of ETM＋ remote sensing image was introduced.Firstly,the blanket method was used for computing fractal dimension of each pixel,and water information corresponding scale was analyzed.Secondly,the fourth down fractal signature was to extract water information.Accuracy assessment for water information was done based on extraction results of water index and extraction accuracy was as high as 98.12%.The result showed that this method can effectively extract water information,and provided a reference method for future related research.