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Two-dimensional projection of a hyperspectral cube. Hyperspectral imaging collects and processes information from across the electromagnetic spectrum. [1] The goal of hyperspectral imaging is to obtain the spectrum for each pixel in the image of a scene, with the purpose of finding objects, identifying materials, or detecting processes.
HyMap data has 126 spectral bands spanning the wavelength interval 0.45–2.5 μm, and 5 metres spatial resolution. It is one of the few hyperspectral sensors that has been commercially deployed, and is thus the subject of a great deal of research in the earth observation field at present.
Integral field spectrography (IFS) techniques were the first snapshot hyperspectral imaging techniques to be developed. Since then, other snapshot hyperspectral imaging techniques, based for example on tomographic reconstruction [1] or compressed sensing using a coded aperture, [2] have been developed. [3]
The on-board data processing system performs numerous real-time processing functions including data acquisition and recording, raw data correction, target detection, cueing and chipping, precision image geo-registration, and display and dissemination of image products and target cue information. [25] ARCHER has three methods for locating targets:
Hyperspectral data is often used to determine what materials are present in a scene. Materials of interest could include roadways, vegetation, and specific targets (i.e. pollutants, hazardous materials, etc.). Trivially, each pixel of a hyperspectral image could be compared to a material database to determine the type of material making up the ...
With the arrival of large-format detector arrays in the late 1980s and early 1990s, a series of new snapshot hyperspectral imaging techniques were developed to take advantage of the new technology: a method which uses a fiber bundle at the image plane and reformatting the fibers in the opposite end of the bundle to a long line, [4] viewing a ...
HICO collected hyperspectral satellite imagery of the Earth's surface from the ISS. [1] [2] [3] HICO was a pathfinder or proof-of-concept mission for hyperspectral imaging of the oceans, particularly for optically complex coastal waters. [4] The dataset collected by HICO serves as an example dataset for future hyperspectral satellite missions ...
It records data via a Sun-synchronous orbit at a height of 653 km above the Earth. The satellite provides a high resolution hyperspectral imager capable of resolving 230 spectral bands from 420 to 2450 nm with a ground resolution of 30 m x 30 m. The swath width amounts to 30 km at a maximum swath length of up to 5000 km a day.
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