An Airborne Offner Imaging Hyperspectrometer with Radially-Fastened Primary Elements [PDF]
Sensors, 2020 We propose a new layout for the Offner imaging hyperspectrometer that is utilized onboard small space vehicles. The layout is based on a method of adjusting the adaptive temperature-dependent optical scheme by moving just two coaxial optical components ...
Nikolay Ivliev +2 more
exaly +7 more sources
3U CubeSat-Based Hyperspectral Remote Sensing by Offner Imaging Hyperspectrometer with Radially-Fastened Primary Elements [PDF]
SensorsThis paper presents findings from a spaceborne Earth observation experiment utilizing a novel, ultra-compact hyperspectral imaging camera aboard a 3U CubeSat.
Nikolay Ivliev +2 more
exaly +4 more sources
Visualization of Subcutaneous Blood Vessels Based on Hyperspectral Imaging and Three-Wavelength Index Images [PDF]
Sensors, 2023 Blood vessel visualization technology allows nursing staff to transition from traditional palpation or touch to locate the subcutaneous blood vessels to visualized localization by providing a clear visual aid for performing various medical procedures ...
Mohammed Hamza +2 more
doaj +2 more sources
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2014 Hyperspectral imaging has been widely applied in remote sensing scientific fields. For this study, hyperspectral imaging data covering the spectral region from 400 to 1000 nm were collected from an unmanned aerial vehicle visible/near-infrared imaging ...
Ning Wang, Yaokai Liu, Lingling Ma
exaly +4 more sources
Spectral Diffractive Lenses for Measuring a Modified Red Edge Simple Ratio Index and a Water Band Index [PDF]
Sensors, 2021 We propose a novel type of spectral diffractive lenses that operate in the ±1-st diffraction orders. Such spectral lenses generate a sharp image of the wavelengths of interest in the +1-st and –1-st diffraction orders.
Veronika Blank +3 more
doaj +2 more sources
Hyperspectral Monitoring of Powdery Mildew Disease Severity in Wheat Based on Machine Learning [PDF]
Frontiers in Plant Science, 2022 Powdery mildew has a negative impact on wheat growth and restricts yield formation. Therefore, accurate monitoring of the disease is of great significance for the prevention and control of powdery mildew to protect world food security.
Zi-Heng Feng +9 more
doaj +2 more sources
Extraction and Dyeing Techniques of Traditional Vegetable Dyestuffs.
Int J Anal Chem, 2022 In order to explore the influencing factors of the extraction of vegetable dyes, a research method for the extraction and dyeing of traditional vegetable dyes was proposed. In this paper, the effects of extraction temperature, extraction time, and the ratio of solid to liquid on the extraction effect were discussed through orthogonal experiments.
Li G.
europepmc +2 more sources
Alignment and study of prototypes of the Offner hyperspectrometer
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016 A prototype of the hyperspectrometer based on the Offner scheme has been tested. Drawings have been produced and the main mirror elements of the hyperspectrometer including diffraction grating on a convex spherical surface have been fabricated.
S. V. Karpeev +3 more
doaj +3 more sources
The Small-Scale Satellite Modular Hyperspectrometer
Приборы и методы измерений, 2019 Recently in the world practice of aerospace monitoring of the Earth there has been an increasingly active using of methods and devices of hyperspectral imaging.
A. O. Martinov +4 more
doaj +3 more sources
Modeling of image formation with a space-borne Offner hyperspectrometer [PDF]
Компьютерная оптика, 2020 In this paper, we developed a mathematical model of image formation that allows a predictive hyperspectral image to be generated. The model takes into account the formation of an optical image using a matrix photodetector.
Andrey Rastorguev +2 more
doaj +2 more sources