NNear-Infrared (NIR).
GEMIGlobal Environment Monitoring Index
VegetationMultispectralCitation Rank #89
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 Global Environment Monitoring Index (GEMI) is a vegetation spectral index intended for multispectral sensing. It was introduced in 1992; its source is cited as B. Pinty, & M. M. Verstraete (1992). GEMI: a non-linear index to monitor global vegetation from satellites. Vegetatio, 101(1). https://doi.org/10.1007/bf00031911 .
Based on the latest citation data, this index is in the 71.88th percentile overall, ranking 89 out of 313 indices with citation data. Among the 22 indices published within two years of 1992, it ranks 17 (27.27th percentile). Within the vegetation application domain, it is in the 62.56th percentile and ranks 80 out of 211 indices with citation data. Among the 22 similarly aged vegetation indices, it ranks 17 (27.27th percentile).
Formula
((2.0*((N ** 2.0)-(R ** 2.0)) + 1.5*N + 0.5*R)/(N + R + 0.5))*(1.0 - 0.25*((2.0 * ((N ** 2.0) - (R ** 2)) + 1.5 * N + 0.5 * R)/(N + R + 0.5)))-((R - 0.125)/(1 - R))Bands
RRed.