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Near InfraRed

Question asked by nouse111 on Jan 30, 2014
Latest reply on Feb 21, 2014 by geonetadmin
Hey,

i need NDVI for my work (in ArcGis and ecognition).Till now, i have always worked with four band digital imagery - but for this work i have three band orthophotos and "three" band near InfraRed orthophotos.

All channels together (near InfraRed Ortho)

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just the red channel (InfraRed Ortho)
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My question: which channel should i take for the NDVI calculation? (NIR-Red)/(NIR+RED)?

NIR = all three channels together, or just the red one???

Thanks for any help!

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