Journal Article10.1016/0034-4257(90)90085-Z
Calculating the vegetation index faster
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TL;DR: The NIR versus red "infrared percentage vegetation index", NIR/(NIR + Red), is functionally and linearly equivalent to the normalized difference vegetation index, (NIR-Red)/(NIR+Red), which is both computationally faster and never negative as discussed by the authors.
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About: This article is published in Remote Sensing of Environment. The article was published on 01 Oct 1990. The article focuses on the topics: Normalized Difference Vegetation Index.
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References
A soil-adjusted vegetation index (SAVI)
TL;DR: In this article, a transformation technique was presented to minimize soil brightness influences from spectral vegetation indices involving red and near-infrared (NIR) wavelengths, which nearly eliminated soil-induced variations in vegetation indices.
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Derivation of leaf-area index from quality of light on the forest floor
TL;DR: The Leaf—area index of a forest can be measured by determining the ratio of light at 800 μm to that at 675 μm on the forest floor, based on the principle that leaves absorb relatively more red than infrared light.
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•Journal Article
Distinguishing vegetation from soil background information
A J Richardsons,A L Wiegand +1 more
TL;DR: In this article, a study of the soil reflectance that supplies the background signal of vegetated surfaces is presented, taking into account a study reported by Kauth and Thomas (1976) and the determination of Kauth's plane of soils, sun angle effects, vegetation index modeling, and evaluation of vegetation indexes.
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