Journal Article10.1016/0034-4257(90)90085-Z
Calculating the vegetation index faster
579
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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Citations
Assessing the Water Status and Leaf Pigment Content of Olive Trees: Evaluating the Potential and Feasibility of Unmanned Aerial Vehicle Multispectral and Thermal Data for Estimation Purposes
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Examining the relationships between land cover and greenhouse gas concentrations using remote-sensing data in East Asia
TL;DR: In this paper, the authors analyzed the relationship between land cover and GHG concentrations, and concluded that on a yearly scale, land cover types are not closely correlated with GHG.
Ranking of the Territory of Sochi by the Risk of Infection with HFRS Using the Method of Maximum Entropy
E. V. Chehvalova,E. A. Manin,A. N. Kulichenko +2 more
- 06 Jan 2024
TL;DR: Assessment of the epidemiological significance of the territory of the city of Sochi for the risk of infection with HFRS based on the maximum entropy method using a geographical information system and superimposing the points of occurrence of the species (reservoir and carrier of HFRS) on maps of abiotic environmental factors affecting its spread.
Application of a spatial risk model of the crystalline spider mite (Oligonychus sp.) to avocado crop damage using remote sensing
Harry Wilson Báñez Aldave,Ledyz Cuesta Herrera,Juan Ygnacio López Hernández,Jesús Enrique Andrades-Grassi,Hugo Alexander Torres Mantilla +4 more
TL;DR: Spatial risk model of the crystalline spider mite (Oligonychus sp.) applied to avocado crop damage using remote sensing. The model shows that the mite presents a stationary process in second order with spatial dependence of less than 10 m.
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.
6.8K
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.
1.5K