NDVI and NRG

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



Subscribe

by views by likes


Mobius IR conversion

by cfastie about 5 years ago | 21 | 1,905 views | 2


Open-Lux REV-N: Full Circle

by donblair about 5 years ago | 3 | 96 views | 1


Mobius Filter-O-Matic

by cfastie about 5 years ago | 4 | 621 views | 1


Mobius and NIR

by cfastie about 5 years ago | 7 | 451 views | 2


Mobius Action Cam Infragram tests

by warren about 5 years ago | 5 | 465 views | 0


Open-Lux

by donblair about 5 years ago | 2 | 81 views | 2





NVDI with canon a2500

by gpenzo over 5 years ago | 5 | 343 views | 1


Impact white balance & stretching on NDVI

by radialmind over 5 years ago | 10 | 224 views | 1


Comments and questions on NDVI

by radialmind over 5 years ago | 5 | 177 views | 2





Root crops

by cfastie over 5 years ago | 0 | 221 views | 0


Why a red filter should work well for NDVI

by nedhorning over 5 years ago | 12 | 1,013 views | 5


Calibrating DIY NIR cameras - part 3

by nedhorning over 5 years ago | 17 | 482 views | 1


SFO-ORD

by cfastie over 5 years ago | 1 | 147 views | 2


Mentor Summit

by cfastie over 5 years ago | 1 | 91 views | 2


ORD - SFO

by cfastie over 5 years ago | 3 | 103 views | 2


Calibrating DIY NIR cameras – part 2

by nedhorning over 5 years ago | 2 | 242 views | 3


Oaktober

by cfastie over 5 years ago | 6 | 404 views | 0


Lycopene

by cfastie over 5 years ago | 3 | 989 views | 2