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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 tagged with ndvi

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Change the white balance (or other configuration) on a Mobius camera

by warren 5 months ago | 0 | 272 | 2

This is part of the documentation of the Infragram Point & Shoot b...

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Getting started with infrared photography on Infragram.org

by warren 5 months ago | 0 | 380 | 1

This tutorial walks through working with images on Infragram.org, which is an ea...

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Using 2 camera try to find NDVI Image. Please verify my image .

by Kalarav 7 months ago | 13 | 274 | 2

Hello to all, I am An Embedded enthusiast  right now I’m working on to find NDVI images and it'...

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Aerial Mapping Using Near-Infrared Imaging: The Bioswale at Carpenter's Orchard

by yoshi1776 10 months ago | 0 | 215 | 1

Aerial Mapping Using Near-Infrared Imaging: The Bioswale at Carpenter's Orchard Introduction: ...

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Dual NDVI Ultra Probe Unit

by cfastie 10 months ago | 7 | 525 | 4

*Above: The Dual NDVI Ultra Probe Unit is powered by a Nano Logger (enhanced by an array of beryl...

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Mobius NDVI

by FrankA about 1 year ago | 3 | 620 | 3


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Conversion of 4k sport camera for NDVI analysis with UAVs

by azaelb over 1 year ago | 19 | 1,713 | 6

Several months ago I got a key chain 1080p camera and converted it to use with my budget drone...

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Getting started with the Infragram Point and Shoot

by abdul over 1 year ago | 3 | 804 | 3

So you've just opened your Infragram Point & Shoot! You'll notic...

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vineyard spectral photos + dropbox

by elador over 1 year ago | 1 | 632 | 3


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Plant Health NDVI -White Balance

by Claytonb over 1 year ago | 3 | 1,410 | 2

I have been experimenting with numerous different types of material to set a custom white balance...

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Filters and SJ4000

by thechapu over 1 year ago | 9 | 670 | 0

Hello, my name is Cristofer writing from Chile. I'm interested in learning more about stress in ...

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Raspberry + NoIR cam + Blue filter

by carolccarvalho over 1 year ago | 6 | 1,929 | 2

Hi! I'm a student and I'm trying to make an analysis related to plant health. For this, I'm u...

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Plant Health NDVI Consumer camera vs Professional multispectral camera

by Claytonb over 1 year ago | 9 | 3,356 | 9

I wanted to share some of my results in comparing a modified consumer camera with a scientific gr...

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Question: doubts about processing NIR images.

by ahcalori over 1 year ago | 8 | 701 | 1

Hi, I have a modified camera to capture NIR images. In the last events, I have been experienc...

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Graze anatomy

by cfastie almost 2 years ago | 8 | 1,500 | 4


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Calibration cogitation

by cfastie almost 2 years ago | 11 | 1,253 | 5

Normalized difference vegetation index (NDVI) has been computed from satellite and airborne data ...

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Pole NDVI of deer grazing

by cfastie almost 2 years ago | 4 | 1,847 | 6

This month Nature published an article with the following assertions: There is three time...

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Infragram Point & Shoot; Time-lapse Difficulty

by balsip almost 2 years ago | 3 | 986 | 1

I would like to set up the code on the camera to shoot on a time-lapse interval (120 seconds). ...

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NDVI to Assess Forage Quality, Question.

by AFairbairn about 2 years ago | 16 | 1,949 | 3

Hello everyone, I am posting this because some may find it interesting and I need some assistanc...

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NDVI Research with an Analytical Grow Chamber

by JohnsonC about 2 years ago | 15 | 2,076 | 7

My goal is to develop a series of experiments that accurately prove that the NDVI values of grow...

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NDVI from PiNoir with a blue filter

by carolccarvalho about 2 years ago | 1 | 2,840 | 2

Hi! I'm using a PiNoir camera with a blue filter to take ngb pictures. As I need to do a colo...

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NDVI from infrared and visible-light

by Rayishido about 2 years ago | 15 | 2,344 | 1

Hi! I am using a Picam and a PiNOIR to take visible-light and infrared picture at the same tim...

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Plant health NDVI Red vs Blue filter

by Claytonb about 2 years ago | 9 | 3,518 | 5

While testing Ned Horning's calibration plugin([Ned's plugin](https://publiclab.org/notes/nedhorn...

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MidOpt Dual Bandpass and Event38 filter testing

by Claytonb about 2 years ago | 2 | 1,965 | 2

I recently had Jason Dougherty with Midwest Optical Systems ([MidOpt](http://midopt.com/filters/...

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