复杂环境下GF-2影像水体指数的构建及验证

王春霞, 张俊, 李屹旭, Phoumilay

The construction and verification of a water index in the complex environment based on GF-2 images

WANG Chunxia, ZHANG Jun, LI Yixu, PHOUMILAY

表1 常用水体指数

Tab.1 Common used water indexes

模型名称 计算公式① 来源 归一化差异植被指数 N D V I = ( ρ N I R - ρ R E D ) / ( ρ R E D + ρ N I R ) [27] 归一化差异水体指数 N D W I = ( ρ G R E E N - ρ N I R ) / ( ρ G R E E N + ρ N I R ) [15] 阴影水体指数 S W I = ρ B L U E + ρ G R E E N - ρ N I R [19] 改进的阴影水体指数 M S W I = ( ρ B L U E - ρ N I R ) / ρ N I R [6] 增强的阴影水体指数 E S W I = ( ρ B L U E + ρ G R E E N ) / ( 2 ρ N I R ) [28]