Results 41 to 50 of about 1,051,339 (291)

A spectral and spatial transformer for hyperspectral remote sensing image super-resolution

open access: yesInternational Journal of Digital Earth
Due to the generally low spatial resolution of hyperspectral images (HSIs), early multispectral images lacked corresponding panchromatic bands, and as a result, fusion methods could not be used to enhance resolution.
Bingqian Wang   +5 more
doaj   +1 more source

A Three-Dimensional Conceptual Model for Estimating the Above-Ground Biomass of Winter Wheat Using Digital and Multispectral Unmanned Aerial Vehicle Images at Various Growth Stages

open access: yesRemote Sensing, 2023
The timely and accurate estimation of above-ground biomass (AGB) is crucial for indicating crop growth status, assisting management decisions, and predicting grain yield. Unmanned aerial vehicle (UAV) remote sensing technology is a promising approach for
Yongji Zhu   +7 more
doaj   +1 more source

Phytoplankton community dynamic detection from the chlorophyll-specific absorption coefficient in productive inland waters

open access: yesActa Limnologica Brasiliensia, 2017
Aim: In this research, we investigated the spectral variability of the specific phytoplankton absorption coefficient, a*φ, measured in a tropical meso-to-hypertrophic reservoir, aiming to find spectral features associated with the chlorophyll-a (chla ...
Fernanda Sayuri Yoshino Watanabe   +5 more
doaj   +1 more source

An Efficient Cloud Classification Method Based on a Densely Connected Hybrid Convolutional Network for FY-4A

open access: yesRemote Sensing, 2023
Understanding atmospheric motions and projecting climate changes depends significantly on cloud types, i.e., different cloud types correspond to different atmospheric conditions, and accurate cloud classification can help forecasts and meteorology ...
Bo Wang   +6 more
doaj   +1 more source

Versatile spectral imaging with an algorithm-based spectrometer using highly tuneable quantum dot infrared photodetectors [PDF]

open access: yes, 2011
We report on the implementation of an algorithm-based spectrometer capable of reconstructing the spectral shape of materials in the mid-wave infrared (MWIR) and long-wave infrared (LWIR) wavelengths using only experimental photocurrent measurements from ...
Attaluri, R.S.   +7 more
core   +2 more sources

Spectral features and masses in the PeV region [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2003
An analysis is made of the masses and spectral features for cosmic rays in the PeV region, insofar as they have a bearing on the problem of the interaction of cosmic ray particles. In our Single Source Model we identified two 'peaks' seen in a summary of the world's data on primary spectra, and claimed that they are probably due to oxygen and iron ...
Erlykin, A. D., Wolfendale, A. W.
openaire   +2 more sources

Spectral properties of weathered and fresh rock surfaces in the Xiemisitai metallogenic belt, NW Xinjiang, China

open access: yesOpen Geosciences, 2017
Surfaces weathering of rocks in which mineral materials may be similar to or quite different from the minerals in the underlying parent rock completely control the reflectance spectra of the terrain.
Zhou Ke-Fa, Wang Shan-Shan
doaj   +1 more source

Clinical Insights Into Hypercalcemia of Malignancy in Childhood

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Hypercalcemia of malignancy (HCM) is a rare but life‐threatening metabolic emergency in children that occurs in less than 1% of pediatric cancer cases, with a reported incidence ranging from 0.4% to 1.0% across different studies. While it is observed in 10%–20% of adult malignancies, pediatric HCM remains relatively uncommon.
Hüseyin Anıl Korkmaz
wiley   +1 more source

Conventional to Deep Ensemble Methods for Hyperspectral Image Classification: A Comprehensive Survey

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Hyperspectral image classification (HSIC) has become a hot research topic. Hyperspectral imaging (HSI) has been widely used in a wide range of real-world application areas due to the in-depth spectral information stored within each pixel. Noticeably, the
Farhan Ullah   +5 more
doaj   +1 more source

A double-layer model for improving the estimation of wheat canopy nitrogen content from unmanned aerial vehicle multispectral imagery

open access: yesJournal of Integrative Agriculture, 2023
The accurate and rapid estimation of canopy nitrogen content (CNC) in crops is the key to optimizing in-season nitrogen fertilizer application in precision agriculture. However, the determination of CNC from field sampling data for leaf area index (LAI),
Zhen-qi LIAO   +7 more
doaj   +1 more source

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