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Vegetation indices classification is a system in which two or more spectral bands are combined through defined statistical algorithms to reflect the spatial properties of a vegetation cover. Most of these indices make use of the relationship between red and near-infrared (NIR) bands of satellite images to generate vegetation properties. Several ...
The normalized difference vegetation index (NDVI) is a widely-used metric for quantifying the health and density of vegetation using sensor data. It is calculated from spectrometric data at two specific bands: red and near-infrared. The spectrometric data is usually sourced from remote sensors, such as satellites.
It was originally developed for military target identification and reconnaissance. Early space-based imaging platforms incorporated multispectral imaging technology [1] to map details of the Earth related to coastal boundaries, vegetation, and landforms. [2] Multispectral imaging has also found use in document and painting analysis. [3] [4]
Aerial photograph interpretation is a method of extrapolating geological details of the ground surface from aerial images. [1] It allows geologists to analyze the distinguishing geological features and structures, plant cover, past history of the site, soil properties, and topography of the study area. [1][2] It is crucial in the early stage of ...
These thematic mappers take images in multiple wavelengths of electromagnetic radiation (multi-spectral) and are usually found on Earth observation satellites, including (for example) the Landsat program or the IKONOS satellite. Maps of land cover and land use from thematic mapping can be used to prospect for minerals, detect or monitor land ...
Satellite crop monitoring is the technology which facilitates real-time crop vegetation index monitoring via spectral analysis [ 1] of high resolution satellite images for different fields and crops which enables to track positive and negative dynamics of crop development. [ 2][ 3] The difference in vegetation index informs about single-crop ...
Here are two examples for plankton and glacier mapping. The bloom of photosynthesizing phytoplankton is an ecological proxy to favorable environmental conditions. [ 20 ] Satellite remote sensing in VNIR wavelength region help locate sporadic event of change in ocean colour due to relative increase in related absorption in spectral curve. [ 20 ]
6- monthly NDVI average for Australia, 1 Dec 2012 to 31 May 2013 [1] A vegetation index (VI) is a spectral imaging transformation of two or more image bands designed to enhance the contribution of vegetation properties and allow reliable spatial and temporal inter-comparisons of terrestrial photosynthetic activity and canopy structural variations.