EVI
The enhanced vegetation index from blue, red, and near-infrared reflectance, which stays responsive over dense canopy where NDVI saturates.
Experimental: not yet fully verified. How results are checked
EVI is 0.5675.
Provenance
- Computed by
- raster.index.evi 1.0.0, core 0.1.0
- Model
- EVI = 2.5 (NIR - Red) / (NIR + 6 Red - 7.5 Blue + 1), the MODIS coefficients (Huete and others 2002)
- Accuracy
- Exact arithmetic on the reflectance given.
- Notes
- 1 shown with the answer
- Cites
- Huete, A., Didan, K., Miura, T., Rodriguez, E. P., Gao, X., and Ferreira, L. G., Remote Sensing of Environment, Overview of the radiometric and biophysical performance of the MODIS vegetation indices
Something look off?
How we got thisFormula, worked example, sources, and proof
Model: EVI = 2.5 (NIR - Red) / (NIR + 6 Red - 7.5 Blue + 1), the MODIS coefficients (Huete and others 2002)
Accuracy: Exact arithmetic on the reflectance given.
When to use this: Use this over dense vegetation, where NDVI flattens out and stops distinguishing more canopy from a lot of canopy. The blue band lets it correct for aerosol scattering, and the coefficients are the MODIS ones, so values are comparable with published MODIS products.
Limitations: It needs a blue band, which is the noisiest in most sensors and is missing from some, and the aerosol correction it applies is the reason EVI2 exists. The coefficients are tied to the MODIS formulation, so an EVI computed from another sensor's bands is not strictly the same quantity.
Worked example: EVI over a vegetated pixel. Source: Huete and others 2002: NIR 0.45, red 0.08, blue 0.04 give 0.5675. It is golden test vector v001, and every build checks the tool still gives its answer within its tolerance.
You enter
- Blue reflectance
- 0.04
- Near-infrared reflectance
- 0.45
- Red reflectance
- 0.08
You get
- EVI
- 0.5675
Review: Not yet independently reviewed by a GIS professional.
Last verified: 2026-09-22, when a maintainer last confirmed this tool's sources at the issuer. See the sources ledger.
Status: version 1.0.0, core 0.1.0. See this tool in the verification report.
Checked against: 10 golden test vectors (download the test vectors, each with its source and tolerance). See how results are checked and every source.
Sources
- Overview of the radiometric and biophysical performance of the MODIS vegetation indices, Huete, A., Didan, K., Miura, T., Rodriguez, E. P., Gao, X., and Ferreira, L. G., Remote Sensing of Environment, Volume 83, issues 1-2, pages 195-213. EVI = 2.5 (NIR - Red) / (NIR + 6 Red - 7.5 Blue + 1).
Terms
- EVI: enhanced vegetation index
- A vegetation index that uses blue as well as red and near-infrared, staying responsive over dense canopy where NDVI flattens out. Source: Overview of the radiometric and biophysical performance of the MODIS vegetation indices
Experimental means this tool has not yet met the stable bar: at least 20 golden vectors, differential tests, and an independent worked example.