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SE Iowa | Preach! haha
In the visible bands of light, the plant absorbs 90% of the sunlight and only reflects 10% back to a camera. In the NIR, that is flip-flopped.
No matter what index you are using for RGB (false-NDVI, VARI, etc.) you can't counteract this problem.
“Applying NDVI methods willy-nilly to any old image and expecting instant science is just plain lazy; and justification of your methods in the context of repeatable research would be an uphill climb. Frankly, if usurping visible spectrum for near infrared made sense, then they'd stop putting those fancy, expensive sensors on Landsat. The image is the image; and the old adage of "garbage in garbage out" certainly applies here. Know your land. Question your own methods. Check your work!” | |
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Why False NDVI is not accurate....
