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以巢湖为研究区域,提出了一种基于HJ-1B数据分形特征的水面面积提取方法。首先利用地毯法计算像元的分形信号,并对其进行特征分析;其次选用下分形第3尺度进行水面面积提取;最后利用同时期统计年鉴数据对提取结果进行精度评价。实验结果表明,该方法可以快速有效地提取水面面积,也为今后水体信息提取的相关研究提供了一种新的思路。
Taking Chaohu Lake as the research area, a method of water surface area extraction based on HJ-1B data fractal features was proposed. Firstly, the fractal signal of pixel was calculated by carpet method, and its characteristic was analyzed. Secondly, the water surface area was extracted by the third fractal scale. Finally, the accuracy of the extraction results was evaluated by using the statistical yearbook data of the same period. The experimental results show that this method can extract surface area quickly and effectively, and provide a new idea for the related research of water body information extraction in the future.