A false-color image of South Florida as generated by data from Landsat 5. Green represents the reflected near infrared light indicative of healthy vegetation.
Red edge refers to the region of rapid change in reflectance of vegetation in the near infrared range of the electromagnetic spectrum. Chlorophyll contained in vegetation absorbs most of the light in the visible part of the spectrum but becomes almost transparent at wavelengths greater than 700 nm. The cellular structure of the vegetation then causes this infrared light to be reflected because each cell acts something like an elementary corner reflector.[citation needed] The change can be from 5% to 50% reflectance going from 680 nm to 730 nm. This is an advantage to plants in avoiding overheating during photosynthesis. For a more detailed explanation and a graph of the photosynthetically active radiation (PAR) spectral region, see Normalized difference vegetation index § Rationale.
The phenomenon accounts for the brightness of foliage in infrared photography and is extensively utilized in the form of so-called vegetation indices (e.g. Normalized difference vegetation index). It is used in remote sensing to monitor plant activity, and it has been suggested that it could be useful to detect light-harvesting organisms on distant planets.[1]
^Seager, S.; Turner, E.L.; Schafer, J.; Ford, E.B. (2005). "Vegetation's Red Edge: A Possible Spectroscopic Biosignature of Extraterrestrial Plants". Astrobiology. 5 (3): 372–390. arXiv:astro-ph/0503302. Bibcode:2005AsBio...5..372S. doi:10.1089/ast.2005.5.372. PMID 15941381. S2CID 11589855.
Rededge refers to the region of rapid change in reflectance of vegetation in the near infrared range of the electromagnetic spectrum. Chlorophyll contained...
The normalized difference rededge index (NDRE) is a metric that can be used to analyse whether images obtained from multi-spectral image sensors contain...
David Howell Evans (born 8 August 1961), better known as the Edge or simply Edge, is a British-Irish musician, singer, and songwriter. He is best known...
before becoming a real estate agent. Savage Garden were a spin-off from RedEdge, which had formed in Brisbane as a covers band in 1992 by Daniel Jones...
weeks later, by an eruption of many smaller scaly spots; pinkish with a rededge in people with light skin and greyish in darker skin. About 20% of cases...
RPM at the inside of the disc, and approximately 200 RPM at the outside edge. The track on the CD begins at the inside and spirals outward so a disc played...
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provide psychological benefits for long-term space flight. The vegetation rededge (VRE) is a biosignature of near-infrared wavelengths that is observable...
Straight edge (sometimes abbreviated sXe or signified by XXX or X) is a subculture of hardcore punk whose adherents refrain from using alcohol, tobacco...
infrared radiation. Typically, it is taken to extend from the nominal rededge of the visible spectrum at 700 nm to 1 mm. This range of wavelengths corresponds...
growth patterns and different cultivars. Some of the most popular are rededge dracaena, Madagascar dragon tree dracaena, dragon blood tree, and tree...
It is commonly known as rededge peperomia because its leaf margins are tinged with dark red. There are varieties where this red or lighter colors are shown...
Edge of Tomorrow is a 2014 American science fiction action film directed by Doug Liman and written by Christopher McQuarrie and the writing team of Jez...
Acleris albicomana, the red-edged acleris moth, is a species of moth of the family Tortricidae. It is found in North America, where it has been recorded...
depth-first search, coloring the path red. During the traversal, whenever a rededge crosses over a blue edge, the blue edge is removed. Finally, when all vertices...
Edge detection includes a variety of mathematical methods that aim at identifying edges, defined as curves in a digital image at which the image brightness...
Red is the color at the long wavelength end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately...
later phase when the seas may have been turquoise. Microbial rhodopsin Rededge – region of rapid change in reflectance of vegetation in the near infrared...
Deudorix galathea, the red-edged playboy, is a butterfly in the family Lycaenidae. It is found in Senegal, Guinea, Sierra Leone, Liberia, Ivory Coast...
version is sold as the Edge 540T. The Zivko Edge 540 is the most common aircraft used in the Red Bull Air Race World Series. Data from Edge 540 Aerobatic Aircraft...
dark-colored dorsally and yellow-green ventrally. The male has a cherry-rededge on its operculum; females have orange coloration in this area. The adult...
examples of edge coverings in two graphs (the set C is marked with red). A minimum edge covering is an edge covering of smallest possible size. The edge covering...
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