NDVI stands for "Normalized Difference Vegetation Index". NRG stands for "Near-infrared / Red / Green". NDVI and NRG are both ways to visualize the amounts of infrared and other wavelengths of light reflected from vegetation. Because both these methods compare ratios of blue and red light absorbed versus green and IR light reflected, they can be used to evaluate the health of vegetation. It's a snapshot of how much photosynthesis is happening. This is helpful in assessing vegetative health or stress. (Read more here: https://www.agronomy.org/publications/jeq/articles/36/3/832)

Learn more on the wiki page>>

Notes tagged with NDVI

Ask a question about NDVI Subscribe to answer questions on this topic


by views by likes

Multispectral work at Sunol Ag Park

by gonzoearth over 7 years ago | 1 | 145 views | 0

NDVI-NRG infrared tests from an airplane

by warren over 8 years ago | 0 | 73 views | 0

Great shot for NDVI

by warren over 8 years ago | 0 | 81 views | 0

NDVI test in Lima Peru

by warren over 8 years ago | 4 | 185 views | 0

Example NDVI usage in a vineyard

by warren over 8 years ago | 1 | 212 views | 1