EVI2
The two-band enhanced vegetation index from red and near-infrared reflectance, which tracks EVI without needing a blue band.
Experimental: not yet fully verified. How results are checked
EVI2 is 0.5633.
Provenance
- Computed by
- raster.index.evi2 1.0.0, core 0.1.0
- Model
- EVI2 = 2.5 (NIR - Red) / (NIR + 2.4 Red + 1) (Jiang and others 2008)
- Accuracy
- Exact arithmetic on the reflectance given. Designed to track EVI closely where atmospheric correction is good.
- Notes
- 1 shown with the answer
- Cites
- Jiang, Z., Huete, A. R., Didan, K., and Miura, T., Remote Sensing of Environment, Development of a two-band enhanced vegetation index without a blue band
Something look off?
How we got thisFormula, worked example, sources, and proof
Model: EVI2 = 2.5 (NIR - Red) / (NIR + 2.4 Red + 1) (Jiang and others 2008)
Accuracy: Exact arithmetic on the reflectance given. Designed to track EVI closely where atmospheric correction is good.
When to use this: Use this when you want EVI's behavior over dense canopy but the imagery has no usable blue band, or the blue band is noisy. It was fitted to follow EVI on atmospherically corrected data, so the two can be compared across a long record made of sensors with different bands.
Limitations: Without a blue band it cannot correct for aerosols, so it relies on the surface reflectance product already having done so; over hazy scenes it drifts from EVI. It shares NDVI's sensitivity to soil background where cover is sparse.
Worked example: EVI2 over a vegetated pixel. Source: Jiang and others 2008 formula: NIR 0.45 and red 0.08 give 0.5633. It is golden test vector v001, and every build checks the tool still gives its answer within its tolerance.
You enter
- Near-infrared reflectance
- 0.45
- Red reflectance
- 0.08
You get
- EVI2
- 0.5633
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
- Development of a two-band enhanced vegetation index without a blue band, Jiang, Z., Huete, A. R., Didan, K., and Miura, T., Remote Sensing of Environment, Volume 112, issue 10, pages 3833-3845. EVI2 = 2.5 (NIR - Red) / (NIR + 2.4 Red + 1).
Terms
- EVI2: two-band enhanced vegetation index
- EVI computed without a blue band, fitted to follow EVI on atmospherically corrected imagery. Source: Development of a two-band enhanced vegetation index without a blue band
Experimental means this tool has not yet met the stable bar: at least 20 golden vectors, differential tests, and an independent worked example.