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Portable Multispectral System Based on Color Detector for the Analysis of Homogeneous Surfaces

A. Martínez-Olmos, P. M. Olmos, M. M. Erenas, P. Escobedo
2019 Journal of Sensors  
In this way, the size of the image is reduced to one pixel. The wavelength selection is carried out by means of a LED array disposed surrounding the color detector.  ...  The imaging device is reduced to a small digital color detector with an active area of 3×2 mm2.  ...  Escobedo wants to thank the Spanish Ministry of Education, Culture and Sport (MECD) for a predoctoral grant (FPU13/05032).  ... 
doi:10.1155/2019/1519753 fatcat:fwl2bmhvmvaeznutscv4ux4xse

Multi-technique characterization of madder lakes: A comparison between non- and micro-destructive methods

Beatrice Campanella, Emanuela Grifoni, Montserrat Hidalgo, Stefano Legnaioli, Giulia Lorenzetti, Stefano Pagnotta, Francesco Poggialini, Laura Ripoll-Seguer, Vincenzo Palleschi
2018 Journal of Cultural Heritage  
In the final procedure, the chromophores-containing molecules were separated using a sample preparation procedure based on acid hydrolysis and solvent extraction, and analysed by high-pressure liquid chromatography  ...  The chemical characterization of paint material is paramount for the understanding of painting techniques, provenance studies and for assessing conservation strategies.  ...  Most of them are based on High Pressure Liquid Chromatography coupled with Diode-Array, Fluorescence or Mass Spectrometric Detectors (HPLC-DAD-FD-MS) [5, 6] , but also 3D Fluorescence and Surface Enhanced  ... 
doi:10.1016/j.culher.2018.01.013 fatcat:vpmbmdsbebgqtkqvy7jnxill2y


P. Tiano, C. Riminesi
2017 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
of the state of conservation of the monumental stone surfaces.  ...  In this context, the determination of the surface water absorption, moisture content, colour variation and mechanical properties are important parameters for the control, and the monitoring over time,  ...  Anna Galluccio, Scientific Attache' Italian Embassy in Canada, 275 Slater Street, Ottawa, Ontario K1P 5H9, for the financial support for the organization of the session "Italian Research in Cultural Heritage  ... 
doi:10.5194/isprs-archives-xlii-2-w5-665-2017 fatcat:voso7bll3jaujfjfqhxjzwo6xe

Verification and Validation of Hybridspectral Radiometry Obtained from an Unmanned Surface Vessel (USV) in the Open and Coastal Oceans

Stanford B. Hooker, Henry F. Houskeeper, Randall N. Lind, Raphael M. Kudela, Koji Suzuki
2022 Remote Sensing  
The hardware and software capabilities of the compact-profiling hybrid instrumentation for radiometry and ecology (C-PHIRE) instruments on an unmanned surface vessel (USV) are evaluated.  ...  The hybridspectral C-PHIRE instruments consist of an array of 18 multispectral microradiometers with 10 nm wavebands spanning 320–875nm plus a hyperspectral compact grating spectrometer (CGS) with 2048  ...  Acknowledgments: The high level of success achieved in the field work used for this study established a foundation of understanding that was the direct consequence of commitments from individuals who contributed  ... 
doi:10.3390/rs14051084 fatcat:ngaowhw75babtasbox74sjpkfm

Vicarious Radiometric Calibration of a Multispectral Camera on Board an Unmanned Aerial System

Susana Del Pozo, Pablo Rodríguez-Gonzálvez, David Hernández-López, Beatriz Felipe-García
2014 Remote Sensing  
Combinations of unmanned aerial platforms and multispectral sensors are considered low-cost tools for detailed spatial and temporal studies addressing spectral signatures, opening a broad range of applications  ...  check surfaces, respectively.  ...  The authors thank Jesús Ferná ndez-Herná ndez for kindly providing the UFLIP software. Furthermore, the authors would like to thank the reviewers for their helpful comments.  ... 
doi:10.3390/rs6031918 fatcat:kjdo2rvfwfbavminqu5rx345me

Earth-observing satellite intercomparison using the Radiometric Calibration Test Site at Railroad Valley

Jeffrey Czapla-Myers, Joel McCorkel, Nikolaus Anderson, Stuart Biggar
2017 Journal of Applied Remote Sensing  
The current results show that all sensors agree with the Radiometric Calibration Test Site (RadCaTS) to within AE5% in the solar-reflective regime, except for one band on VIIRS that is within AE6%.  ...  The period of this study is 2012 to 2016 for MODIS, VIIRS, and ETM+, 2013 to 2016 for OLI, and 2015 to 2016 for MSI.  ...  Finally, the authors would like to thank the reviewers of this paper for their thoughtful comments and suggestions.  ... 
doi:10.1117/1.jrs.12.012004 fatcat:xt2z6aeyjzdlvfg26vl4lffczq

Current Status of Optical Systems for Measuring Lycopene Content in Fruits: Review

Marcos-Jesús Villaseñor-Aguilar, José-Alfredo Padilla-Medina, José-Enrique Botello-Álvarez, Micael-Gerardo Bravo-Sánchez, Juan Prado-Olivares, Alejandro Espinosa-Calderon, Alejandro-Israel Barranco-Gutiérrez
2021 Applied Sciences  
, Raman spectroscopy, and the systems of multispectral imaging (MSI) and hyperspectral imaging (HSI).  ...  Optical systems are used for analysing the internal composition and the external properties in food.  ...  For the analysis, an advantages and disadvantages comparison of the following optical systems is presented: the colorimeter, multispectral and hyperspectral imaging systems, high-performance liquid chromatography  ... 
doi:10.3390/app11199332 fatcat:4cuiarmlxfe4vjtveh2rl4so7a

Fast multispectral diffuse optical tomography system for in vivo three-dimensional imaging of seizure dynamics

Jianjun Yang, Tao Zhang, Hao Yang, Huabei Jiang
2012 Applied Optics  
We describe a multispectral continuous-wave diffuse optical tomography (DOT) system that can be used for in vivo three-dimensional (3-D) imaging of seizure dynamics.  ...  Fast 3-D data acquisition is realized through a time multiplexing approach based on a parallel lighting configuration -our system can achieve 0.12ms per source per wavelength and up to 14Hz sampling rate  ...  Acknowledgments This research was funded in part by an NIH grant (R01 NS069848), and by the J. Crayton Pruitt Family Endowment.  ... 
doi:10.1364/ao.51.003461 pmid:22695584 pmcid:PMC3553592 fatcat:5r7t6i7qnvehfeigbtqmkdli54

Airborne video systems for agricultural assessment

J.H. Everitt, D.E. Escobar, R. Villarreal, J.R. Noriega, M.R. Davis
1991 Remote Sensing of Environment  
This paper reviews the status and development of airborne video imaging systems and their application for resource management, with special emphasis on agriculture.  ...  The digitization and computer processing of video imagery has also been demonstrated.  ...  Moreover, the electronic format of video data makes it compatible with microcomputer-based image processing systems, thus allowing for classification procedures similar to the ones used with satellite  ... 
doi:10.1016/0034-4257(91)90015-x fatcat:boazamwxozhkbg2m5ecscvqcga

Magnetic resonance-guided near-infrared tomography of the breast

Ben Brooksby, Shudong Jiang, Hamid Dehghani, Brian W. Pogue, Keith D. Paulsen, Christine Kogel, Marvin Doyley, John B. Weaver, Steven P. Poplack
2004 Review of Scientific Instruments  
The design and implementation of a multispectral, frequency-domain near infrared tomography system is outlined, which operates in a MRI magnet for utilization of MR-guided image reconstruction of tissue  ...  Photomultiplier tube detector gain levels are electronically controlled on a time scale of 200 ms, thereby allowing rapid switching of the source to locations around the tissue.  ...  Absorption and reduced scattering coefficient ͑mm −1 ͒ reconstructions in (c) are obtained without utilizing the internal structure of (b).  ... 
doi:10.1063/1.1819634 fatcat:ekxprmwtzrbdlfdsd4qkyrv2em

Derivative analysis of hyperspectral oceanographic data [chapter]

Elena Torrecilla, Jaume Piera, Meritxell Vilasec
2009 Advances in Geoscience and Remote Sensing  
Changes in the thermal response of these systems are due to the silicon used for the arrays of detectors.  ...  Derivative of hyperspectral data can yield more information than traditional analysis based on ratios of discrete spectral bands (multispectral approaches).  ...  In practice, remote sensing is the stand-off collection through the use of a variety of devices for gathering information on a given object or area.  ... 
doi:10.5772/8316 fatcat:wdix5winhrhbxiempwup2bxvym

Multispectral Imaging and p-XRF for the Non-Invasive Characterization of the Anonymous Devotional Painting 'Maria Santissima delle Grazie' from Mirabella Imbáccari (Sicily, Italy)

Antonella Privitera, Maria Francesca Alberghina, Elèna Privitera, Salvatore Schiavone
2021 Heritage  
XRF spectrometry analysis is performed for the identification of the chemical elements constituting the pigments (inorganic chromophores).  ...  Multispectral imaging techniques (IR Reflectography, UV-induced visible Fluorescence, X-ray) are carried out for the study of the execution technique, the identification of underlying remakes, sketch drawing  ...  The authors want to thank in a special way the bishop Mons. Calogero Peri of the Caltagirone diocese for having granted the scientific investigations on the painting.  ... 
doi:10.3390/heritage4030131 fatcat:bev4m2tixfhdbnvjibemu2q7xe

Practical Applications of a Multisensor UAV Platform Based on Multispectral, Thermal and RGB High Resolution Images in Precision Viticulture

Alessandro Matese, Salvatore Di Gennaro
2018 Agriculture  
The applicability of a UAV platform to use RGB, multispectral and thermal sensors was tested for specific purposes in precision viticulture and was demonstrated to be a valuable tool for fast multipurpose  ...  The intra-vineyard variability was assessed in terms of characterization of the state of vines vigor using a multispectral camera, leaf temperature with a thermal camera and an innovative approach of missing  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/agriculture8070116 fatcat:rijrfyxz5zaunbiqoljrj2muqm

A Combined Non-Destructive and Micro-Destructive Approach to Solving the Forensic Problems in the Field of Cultural Heritage: Two Case Studies

Michela Ricca, Maria F. Alberghina, Luciana Randazzo, Salvatore Schiavone, Antonio Donato, Maria P. Albanese, Mauro F. La Russa
2021 Applied Sciences  
Overall, the benefits of on-site forensic investigations are multiple, including the potential to increase substantially the speed and efficacy of the criminal justice system.  ...  The present paper shows data from the non-destructive and micro-destructive analysis of different artworks and objects provided by the Cosenza Carabinieri Unit for the Protection of Cultural Heritage and  ...  Acknowledgments: We thank the Cosenza Carabinieri Unit for the Protection of Cultural Heritage and Anti-Counterfeiting (Calabria, Italy) that provided objects for the analysis.  ... 
doi:10.3390/app11156951 doaj:90ee86b279cb4a2789f1100880da5707 fatcat:edhslr5i55eurd2w7atuueudhu

Machine vision detection of pests, diseases, and weeds: A review

Chiranjeevi Muppala, Velmathi Guruviah
2020 Journal of Phytology  
Machine vision is a potential technique for surveillance of crop health which can pinpoint the geolocation of crop stress in the field.  ...  Early statistics on crop health can hasten prevention strategies such as pesticide, fungicide applications to reduce the pollution impact on water, soil, and air ecosystems.  ...  Multispectral and hyperspectral imaging systems [4] use the texture and color of the crops for problem identification.  ... 
doi:10.25081/jp.2020.v12.6145 fatcat:lbidocmc6rebdnjadeghwccbk4
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