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)

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Notes on ndvi by cfastie

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Dual NDVI Ultra Probe Unit

by cfastie almost 2 years ago | 8 | 820 | 4


Graze anatomy

by cfastie over 2 years ago | 8 | 1,593 | 4


Calibration cogitation

by cfastie almost 3 years ago | 11 | 1,307 | 5


Pole NDVI of deer grazing

by cfastie almost 3 years ago | 3 | 1,957 | 6


Single vs. dual cameras

by cfastie about 3 years ago | 1 | 3,318 | 3


Testing MIDOPT filters

by cfastie about 3 years ago | 8 | 2,307 | 3


Dual bandpass filters

by cfastie about 3 years ago | 9 | 3,998 | 2


Crown Point Fort infrared

by cfastie over 3 years ago | 2 | 2,832 | 6


Orange is the new red

by cfastie about 4 years ago | 11 | 5,506 | 6


Event38 NDVI over Cocodrie

by cfastie about 4 years ago | 3 | 3,734 | 1


The KAPtober Collection

by cfastie over 4 years ago | 1 | 4,320 | 5


NIR and water

by cfastie over 4 years ago | 1 | 6,892 | 6


LEAFFEST aerials

by cfastie over 4 years ago | 1 | 3,173 | 3


The LEAFFEST Line

by cfastie over 4 years ago | 2 | 4,488 | 0


New NDVI colormap

by cfastie over 4 years ago | 29 | 14,861 | 8


Titan 2 IR flight

by cfastie over 4 years ago | 2 | 3,789 | 3


Titan 2 IR

by cfastie over 4 years ago | 5 | 5,463 | 5


Super Redstone

by cfastie over 4 years ago | 3 | 3,482 | 3


The Titan 2 Rig

by cfastie almost 5 years ago | 1 | 4,132 | 0


Mobius NDVI

by cfastie almost 5 years ago | 29 | 8,715 | 3


Mobius white balance

by cfastie almost 5 years ago | 2 | 7,743 | 3


NIR and white balance

by cfastie almost 5 years ago | 1 | 4,824 | 1


Mobius IR conversion

by cfastie almost 5 years ago | 21 | 16,509 | 2


Mobius Filter-O-Matic

by cfastie almost 5 years ago | 4 | 8,251 | 1