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森林火灾迹地是森林火灾的基本描述因子之一,是评估森林火灾严重程度的重要资料。本文基于环境减灾小卫星数据的特性,提出将GEMI指数作为火灾迹地检测指数;为了降低利用单幅影像进行火灾迹地检测时云污染现象对检测精度造成的影响,构建时序GEMI指数合成方法;并进一步提出适用于环境减灾小卫星数据的基于时序合成GEMI影像的火灾迹地检测算法;最后,将算法应用于2009年4月发生在中国黑龙江的森林火灾,检测结果表明该算法能准确地反映出森林火灾过火区域。 更多还原

【Abstract】 Forest fire burn scar is one of the basic description factors of forest fire and important information to assess the intensity of forest fire.Based on the features of HJ satellite data,this paper proposed GEMI as the burn scar detection index.In order to reduce impact on detection accuracy which is caused by cloud contamination when using single image,a time series GEMI images synthesis method is constructed;applying to HJ satellite data,a burn scar detection algorithm based on the composed GEMI... 更多还原