面向对象-改进冰雪指数法消除冰湖干扰提取冰川边界的优越性分析——以各拉丹冬冰川为例
杨佳, 薛莎莎, 苏永恒, 任庆福

Analysis of superiority of the object-oriented-improved ice and snow index method to eliminate glacial lake interference and extract glacier boundaries: taking Geladandong Glacier as an example
Jia YANG, Shasha XUE, Yongheng SU, Qingfu REN
表1 改进的冰雪指数
Table 1 The improved ice and snow indexes
序号名称公式
1比值冰雪指数(ratio snow index,RSI)RSI=ρCoastal/ρSWIR1
2差值冰雪指数(difference snow index,DSI)DSI=ρCoastal-ρSWIR1
3归一化冰雪指数(normalized differential snow index, NDSI*NDSI*=(ρCoastal-ρSWIR1)/(ρCoastal+ρSWIR1)