GGreen.
WRIWater Ratio Index
WaterMultispectralCitation Rank #172
Skip to content No radar polarizations are used in this index. No constants are used in this index. No contextual reductions are used in this index.
Summary
The Water Ratio Index (WRI) is a water spectral index intended for multispectral sensing. It was introduced in 2010; its source is cited as Li Shen, & Changchun Li (2010). Water body extraction from Landsat ETM+ imagery using adaboost algorithm. 2010 18th International Conference on Geoinformatics. https://doi.org/10.1109/geoinformatics.2010.5567762 .
Based on the latest citation data, this index is in the 45.37th percentile overall, ranking 172 out of 313 indices with citation data. Among the 33 indices published within two years of 2010, it ranks 21 (39.39th percentile). Within the water application domain, it is in the 64.52th percentile and ranks 12 out of 31 indices with citation data. Among the 3 similarly aged water indices, it ranks 3 (33.33th percentile).
Formula
(G + R)/(N + S1)Bands
RRed.
NNear-Infrared (NIR).
S1Short-wave Infrared (SWIR) 1.