SI {VegSpecIndex} | R Documentation |
Shadow Index
Description
The characteristics of canopy shadow are associated by the total spectral radiance that is reflected from the canopy. Canopy shadow provides essential information about trees and plants arrangement. As a remote sensing index, Shadow Index (SI) is calculated using the visible bands of the spectrum, in a way that simulates the amount energy not reflected back to the sensor. It is usually combined with other indices like AVI and BSI to understand the status of vegetation (Sykas, 2025).
Usage
SI (BLUE, GREEN, RED)
Arguments
BLUE |
Blue spectral band |
GREEN |
Green spectral band |
RED |
Red spectral band |
Value
Shadow Index
References
Sykas, D. (2025). Spectral Indices with multispectral satellite data. Why Use Spectral Indices from Satellites <https://www.geo.university/pages/spectral-indices-with-multispectral-satellite-data/>.
Examples
SI (0.034204, 0.058156, 0.061663)