WorldView 1 ARI
Anthocyanin Reflectance Index for WorldView 1
Vegetation Satellite Provider: MAXAR
Applications
anthocyanin content estimation
plant stress detection
leaf senescence monitoring
autumn foliage assessment
fruit ripeness evaluation
plant physiological status
Quick Stats
Category: vegetation
Sensor: WorldView 1
Provider: MAXAR
Bands Used: 2
Description
The Anthocyanin Reflectance Index (ARI) was developed by Gitelson et al. to non-destructively estimate anthocyanin content in plant leaves. It isolates the anthocyanin absorption peak around 550nm by subtracting the 700nm band that reflects only chlorophyll. ARI is particularly useful for monitoring plant stress, senescence, and physiological status.
Formulas
General Formula
WorldView 1 Specific Formula
(1 / Panchromatic) - (1 / Panchromatic)Spectral Band Visualization
Band Wavelengths
550: 550
700: 700
Code Examples
ari.py
References
Gitelson, A.A., Merzlyak, M.N., and Chivkunova, O.B. (2001) - Optical properties and nondestructive estimation of anthocyanin content in plant leaves. Photochemistry and Photobiology, 74(1), 38-45