基于GF-2遥感影像的机械性破损面提取方法

夏既胜, 马梦莹, 符钟壬

Extraction of mechanical damage surface using GF-2 remote sensing data

Jisheng XIA, Mengying MA, Zhongren FU

表3 地物的分类规则

Tab.3 Classification Rules of Terrain Objects

类别 分类规则 水体 (0.35<NDWI<0.8) and (110<mean NIR<220) 林地 (0.2<NDVI<0.7) and (Stddev of length of edges (polygon)<4) 有作物的耕地 (0.2<NDVI<0.7) and (Stddev of length of edges (polygon)≥4) 居民地 (NDVI≥0.7 or NDVI≤0.2) and (length/width<2.8 or length/width>35) and (600<mean NIR<1 500) 无作物的耕地 (meanNIR≥1 500 or meanNIR≤600) and (2.8≤length/width≤35)and (8<Stddev of length of edges (polygon)<52) 裸地 (NDVI≥0.07 and NDVI≤0.01) 机械性破损面 (Stddev of length of edges (polygon)≤8 or Stddev of length of edges (polygon)≥52) and (0.01<NDVI<0.07) and (contrast>1 000) and (Homogeneity<0.07)