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Showing 1 to 13 of 13 for “"VNIR"”.
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Mapping Smallholder Forest Plantations in Andhra Pradesh, India using Multitemporal Harmonized Landsat Sentinel-2 S10 Data
… and inter-annual) visible and near-infrared (VNIR) bands from the Sentinel-2 MultiSpectral Instruments (MSIs). Dependency on and scarcity of wood products have driven the deforestation and degradation of natural forests in Southeast Asia. At the same time, forest plantations have been …
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Land Surface Phenologies and Seasonalities Using Cool Earthlight in Temperate and Tropical Croplands
… they can complement visible to near infrared (VNIR) and thermal infrared (TIR) data. Passive microwave data are less sensitive to atmospheric effects, cloud contamination, and solar illumination constraints resulting in finer temporal resolution suitable to track the temporal progression of …
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Generating A Characterization Method Utilizing The Visible (0.6-1.0 μm) Peak Feature To Aid In Identification Of Ordinary Chondrite Parent Bodies
<p>Surveys in the visible to near infrared (VNIR) of main belt asteroids which cut off at the 1 micron wavelength prevent adequate characterization for approximately 2500 asteroids. This project aims at surveying spectral data from RELAB and Gaffey's meteorite datasets utilizing the peak feature …
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Ground-Based Hyperspectral Imaging and Data Analysis for Near-Vertical Outcrop Surfaces
… sensors operating in visible-near infrared (VNIR) and shortwave infrared (SWIR) ranges. A workflow including data collection, sensor artifact removal, image preprocessing, and spectral data analysis was implemented. Three case studies from different geological settings were carried out to …
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NATURAL ANALOGUES OF PLANET MERCURY’S SURFACE: MINERALOGICAL AND SPECTROSCOPIC ASPECTS
… parent bodies. The visible–near infra-red (VNIR) reflectance spectra show diagnostic features that reflect both the very low FeO content (<0.4 wt%) in silicates and the minero-chemical variations among the samples. Aubrites exhibit weak mafic-related absorption bands at 0.9 μm, attributed to …
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Studio integrato di aree minerarie della Sardegna tramite telerilevamento e analisi mineralogiche
… dell’ambiente, in particolare negli intervalli VNIR(visibile-infrarosso vicino, 0,52 – 0,86 μm) e SWIR (infrarosso a corta lunghezza d’onda,1,60 – 2,43 μm). Più esattamente, nell’intervallo VNIR è possibile l’identificazione di minerali in cui sono presenti metalli di transizione come il …
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Mobile hyperspectral imaging for structural damage detection
… at a pixel in the visible and near-infrared (VNIR) portion of the electromagnetic spectrum bands. To prove its potential in discriminating complex objects, a machine learning methodology is developed with classification models that are characterized by four different feature extraction …
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A Comparison of Atmospheric Models MODTRAN and 6S Based on Top of Atmosphere Reflectances of Natural Targets as Applied to Selected Mid-resolution Sensors
… and lower towards the Visible Near-Infrared (VNIR) bands. The percentage difference in the VNIR bands for vegetated and desert sites are within 3% and 2%, respectively. The differences in SWIR bands for vegetated and desert site are within 6% and 4.5%, respectively. However, the absolute …
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Improving Identification of Area Targets by Integrated Analysis of Hyperspectral Data and Extracted Texture Features
… of spectral bands total) were used from the VNIR-SWIR portion of the electromagnetic spectrum. Haralick texture features (contrast, entropy, and correlation) were extracted from the average grey level image for each range. A maximum likelihood classifier was trained using a set of ground …
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Distribution of olivine and pyroxene in S-type asteroids throughout the inner main belt
… be constrained using visible and near-infrared (VNIR) spectroscopy. The most prominent spectral features observed over this wavelength range are due to olivine and pyroxene, the two most abundant minerals in both chondritic and achondritic meteorites. The observed ratio of these two minerals is …
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Multi-Scale Mapping of Diagenetic Processes in Sandstones Using Imaging Spectroscopy: A Case Study of the Frontier Formation (Wyoming, U.S.A.) and the Utrillas Formation (Burgos, Spain)
… Formation, Spain. Visible Near-Infrared (VNIR) and Shortwave-Infrared (SWIR) Specim® hyperspectral cameras were used to scan near vertical and well exposed outcrop walls. Reflectance spectra was analyzed and compared with high resolution laboratory spectral and hyperspectral imagining …
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Remote Sensing of Cyanobacteria in Case II Waters Using Optically Active Pigments, Chlorophyll a and Phycocyanin
… Indianapolis reservoirs using ASD Fieldspec (UV/VNIR) spectroradiometers. Groundtruth samples were analyzed for in-vitro pigment concentrations and other physical and chemical water quality parameters. Empirical algorithms by Gitelson et al. (1986, 1994), Mittenzwey et al. (1991), Dekker (1993), …
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Surface detection of alkaline ultramafic rocks in semi-arid and arid terrains using spectral geological techniques
… talc and phlogopite.<br></br><br></br> The VNIR spectra of these rocks also have distinct absorption features, but since these are caused by minerals that are common to a variety of rocks and soils, they have not been considered in this study. When weathered under arid and semi-arid …