Dragonette-2/3 SIPI
Structure Insensitive Pigment Index for Dragonette-2/3
Vegetation Satellite Provider: Wyvern
Applications
plant stress detection
carotenoid/chlorophyll ratio assessment
leaf senescence monitoring
physiological status evaluation
canopy structure-independent analysis
crop health monitoring
Quick Stats
Category: vegetation
Sensor: Dragonette-2/3
Provider: Wyvern
Bands Used: 3
Description
The Structure Insensitive Pigment Index (SIPI) was developed by Peñuelas et al. (1995) to assess the ratio of carotenoids to chlorophyll-a while minimizing the effects of canopy structure variation. SIPI is particularly useful for detecting plant stress and senescence, as chlorophylls tend to decline more rapidly than carotenoids under stress conditions.
Formulas
General Formula
Dragonette-2/3 Specific Formula
(Band27 - Band1) / (Band27 - Band18)Spectral Band Visualization
Band Wavelengths
445: 445
680: 680
800: 800
Code Examples
sipi2.py
References
Peñuelas, J., Baret, F., and Filella, I. (1995) - Semi-empirical indices to assess carotenoids/chlorophyll-a ratio from leaf spectral reflectance. Photosynthetica, 31(2), 221-230