RE1Red Edge 1.
TWITriangle Water Index
WaterMultispectralCitation Rank #293
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 Triangle Water Index (TWI) is a water spectral index intended for multispectral sensing. It was introduced in 2022; its source is cited as Lifeng Niu, Hermann Kaufmann, Guochang Xu, Guangzong Zhang, Chaonan Ji, Yufang He, & Mengfei Sun (2022). Triangle Water Index (TWI): An Advanced Approach for More Accurate Detection and Delineation of Water Surfaces in Sentinel-2 Data. Remote Sensing, 14(21). https://doi.org/10.3390/rs14215289 .
Based on the latest citation data, this index is in the 8.2th percentile overall, ranking 293 out of 317 indices with citation data. Among the 53 indices published within two years of 2022, it ranks 43 (20.75th percentile). Within the water application domain, it is in the 12.5th percentile and ranks 29 out of 32 indices with citation data. Among the 12 similarly aged water indices, it ranks 12 (8.33th percentile).
Formula
(2.84 * (RE1 - RE2) / (G + S2)) + ((1.25 * (G - B) - (N - B)) / (N + 1.25 * G - 0.25 * B))Bands
RE2Red Edge 2.
GGreen.
S2Short-wave Infrared (SWIR) 2.
BBlue.
NNear-Infrared (NIR).