منابع مشابه
The NEAR Multispectral Imager
he Multispectral Imager, one of the primary instruments on the Near Earth Asteroid Rendezvous (NEAR) spacecraft, uses a five-element refractive optics telescope, an eight-position filter wheel, and a charge-coupled device detector to acquire images over its sensitive wavelength range of ≈400–1100 nm. The camera operates at a frame rate of 1 Hz, and the detector is passively cooled. The primary ...
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Hyperspectral remote sensing is used in precision agriculture to remotely and quickly acquire crop phenotype information. This paper describes the generation of a digital orthophoto map (DOM) and radiometric calibration for images taken by a miniaturized snapshot hyperspectral camera mounted on a lightweight unmanned aerial vehicle (UAV). The snapshot camera is a relatively new type of hyperspe...
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Multispectral imaging or imaging spectroscopy obtains spectral content of an object by dividing the image data, pixel by pixel, into wavelength (color) bands. The resulting 3D data cube (x, y, λ) allows materials to be identified by their pixel spectral content at multiple wavelengths in addition to their spatial characteristics. A new class of multispectral imaging systems are being developed ...
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In November 2002, the 28, at 06:07am GMT, was launched the 1 Algerian satellite from the cosmodrome of Plesetsk in Russia into a 700 km sun synchronous orbit. Alsat-1 is an enhanced earth observation microsatellite (<100kg), stabilised in 3 axes for image acquisition mode. It was designed for disaster monitoring and is part of the international constellation dedicated to Disaster Monitoring (DM...
متن کاملDesign and experimental validation of a snapshot polarization contrast imager.
We present a degree of polarization imaging system based on a Wollaston prism and a single CCD camera. This architecture eliminates technical inaccuracies and noise sources that are present in experimental setups containing a polarization switching element. After the acquisition of two images corresponding to two orthogonal states of polarization, one can compute the orthogonal state contrast i...
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ژورنال
عنوان ژورنال: Optical Engineering
سال: 2011
ISSN: 0091-3286
DOI: 10.1117/1.3552665