Resultados de búsqueda - "optics"

The use of remote sensing data for drought assessment and monitoring in southwest Asia por Thenkabail, Prasad S., Gamage, M.S.D.Nilantha, Smakhtin, Vladimir U.

“…The unique feature of the study is the development of regression relationships between drought-related indices obtained from MODIS and AVHRR data, which have different pixel-resolution and optical characteristics. The goal is to make the system available, via Internet, to all stakeholders in the region.…”
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Inundations in the Sri Lanka: monitoring and analysis from MODIS [Moderate Resolution Imaging Spectroradiometer] and ALOS [Advanced Land Observing Satellite] instrument por Amarnath, Giriraj, Alahacoon, Niranga, Inada, Yoshiaki

“…This study is focused on the mapping of flood inundation together with flood recurrent based on both optical (MODIS) and microwave (ALOS/PALSAR) satellite images. …”
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Discriminación de trigo y cebada empleando imágenes satelitales ópticas y radar. Estudio de caso: partido de Coronel Rosales (Argentina) por Marini, Mario Fabian

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Computer vision in Agriculture por Blasco, José, Aleixos, Nuria

“…Finally, the future possibilities of optical technology in agriculture are explored.…”
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Dissolved organic carbon in water f luxes of Eucalyptus grandis plantations in northeastern Entre Ríos Province, Argentina = Carbono orgánico disuelto en flujos hídricos de planta... por Teson, Natalia, Conzonno, Víctor H., Arturi, Marcelo Fabian, Frangi, Jorge L.

“…Regression parameters from DOC concentration vs optical density were useful for DOC chemical composition analyses and interpretation of DOC changes. …”
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Carbonaceous aerosols and trace metal deposition in high-latitude snow : a comparative study in Sweden and Alaska por Pinzner, Anika

“…This study measured and characterized carbonaceous particles (CPs) in snow-filtered PM using three different optical analytical methods: a Particle Soot Absorption Photometer (PSAP), a Thermo-Optical Transmittance (TOT) analyser, and a Light-Absorbing Heating Method (LAHM) instrument. …”

ECOSat (Estimation of carbon offsets with satellites) - Final report por Schulthess, Urs, Fonteyne, Simon, Gardeazabal Monsalve, Andrea

“…This study aimed to assess whether radar (Sentinel-1) and optical (Sentinel-2) satellite data could detect residue management practices and differentiate between conventional, minimal, and no tillage fields in Guanajuato, Mexico. …”
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The family Lohmanniidae (Acari, Oribatida) II: two new Oribatid mites, Meristacarus perikopesis sp. n. from Costa Rica and Torpacarus eidikoterai sp. n. from Kenya por Fernandez, Nestor, Theron, Pieter Daniel, Leiva, Sergio Dante, Jordaan, Anine

“…Two very particular new species of the family Lohmanniidae were studied and described using optical and Scanning Electron Microscopy (SEM). Meristacarus perikopesis sp. n. displays complex cuticular microsculpture with cross-shaped grooves and pusticulate porose areas; ten transversal bands, with reticulate-foveate microsculpture; S4, S5, S7, S10 not crossing medial notogastral plane, amongst other characters. …”
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Study of light penetration depth of a Vis-NIR hyperspectral imaging system for the assessment of fruit quality. A case study in persimmon fruit por García-García, José, Rodríguez-Ortega, Alejandro, Aleixos, Nuria, Blasco, José, Albert, Francisco, Munera, Sandra

“…Hyperspectral imaging (HSI) is one of the most studied optical techniques to estimate the internal quality of fruits and vegetables. …”
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The spatial data and knowledge gateways at the International Water Management Institute (IWMI) por Thenkabail, Prasad S., Biradar, Chandrashekhar M., Noojipady, Praveen, Islam, Aminul, Velpuri, Naga Manohar, Vithanage, Jagath, Kulawardhana, Wasantha, Jie, Li Yuan, Venkateswarlu, Dheeravath, Gunasinghe, Sarath, Alankara, Ranjith

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A global map of rainfed cropland areas at the end of last millennium using remote sensing and geospatial techniques por Biradar, Chandrashekhar M., Thenkabail, Prasad S., Turral, Hugh, Noojipady, Praveen, Jie, Li Yuan, Velpuri, Naga Manohar, Dheeravath, Venkateswarlu, Vithanage, Jagath, Schull, M., Cai, X.L., Gumma, Murali K., Rishiraj, D.

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International Water Management Institute's Data Storehouse Pathway (IWMIDSP): A unique data and knowledge gateway of spatial data with emphasis on river basins por Thenkabail, Prasad S., Biradar, Chandrashekhar M., Noojipady, Praveen, Islam, Aminul, Vithanage, Jagath, Velpuri, Naga Manohar, Dheeravath, Venkateswarlu, Kulawardhana, Wasantha, Jie, Li Yuan, Gunasinghe, Sarath, Alankara, Ranjith

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Caracterización del polen de especies de los géneros Passiflora y Dilkea por Barrios Arango, L, Caetano, C.M., Cardozo Conde, Carlos Iván, Coppens d'Eeckenbrugge, Geo, Arroyave, José A., Olaya, Cristian A.

“…The samples were analyzed by using optical and scanning electron microscopy D. margaritae has a pollen of medium size, but in an inferior range, prolate to subprolate, and tricolporate, while D. acuminata has a pollen of medium size, oblate-spherical, 4-partially 5-colporate. …”
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Mapping the irrigated rice cropping patterns of the Mekong delta, Vietnam, through hyper-temporal SPOT NDVI image analysis por Nguyen, T.T.H., Bie, C.A.J.M. de, Ali, A., Smaling, E.M.A., Hoanh, Chu Thai

“…Our study demonstrates the high potential of optical hyper-temporal images, taken on a daily basis, to differentiate and map a high variety of irrigated rice cropping patterns and crop calendars at a high level of accuracy in spite of cloudy conditions.…”
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Allometric relationships for biomass estimation of persimmon trees using a field robot, LiDAR and photogrammetry por Rodríguez, Alejandro, Morales, J., rey, B., Cubero, Sergio, Aleixos, Nuria, Blasco, José

“…Fast and non-destructive alternatives based on optical sensors can perform the nutritional status of plants in the field [1]. …”
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Bot-graphy: An original technique for plant anatomy study based o metallography por Montero, Ricardo, Gomez, Fernando, Setten, Lorena, Favret, Eduardo Alfredo, Torres, Dario

“…The standard technique consists of mounting the specimen in a castable resin (liquid polymer film), followed by grinding the sample with abrasive papers of different granulometry and observing the sample surface with optical reflection microscopy [2]. In this work, an example is shown, the basal internodes of 2.5 to 3 cm in diameter of sugarcane, harvested in Famaillá, Tucumán, Argentina.…”
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Natural infection in Pampas fox (Lycalopex gymnocercus) by Lagochilascaris major Leiper, 1910 (Nematoda: Ascarididae) in Buenos Aires, Argentina por Scioscia, Nathalia, Olmos, Leandro Hipólito, Gorosabel, Antonella, Bernad, Lucía, Pedrana, Julieta, Denegri, Guillermo

“…The diagnosis was made by observing the different stages with optical microscopy, by scanning electron microscopy of adult males and coproparasitological analysis. …”
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Revision of the family Carabodidae (Acari, Oribatida) XII. Yoshiobodes camerunensis sp. n. and Rugocepheus costaricensis sp. n. por Fernandez, Nestor, Theron, Pieter Daniel, Leiva, Sergio Dante, Tiedt, Louwrens

“…Both species are described and illustrated based on adult specimens, studied by means of optical and SEM microscopy.…”
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Development of a Hyperspectral Computer Vision System Based on Two Liquid Crystal Tuneable Filters for Fruit Inspection. Application to Detect Citrus Fruits Decay por Gómez-Sanchís, Juan, Lorente, Delia, Soria-Olivas, Emilio, Aleixos, Nuria, Cubero, Sergio, Blasco, José

“…To ensure reliable and repeatable results using this kind of optical sensors, the intensity shown by the objects in the different spectral images must be independent from the differences in sensitivity of the system for the different wavelengths. …”
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Development of an open source tool to analyze Vegetation Index from Remote Sensing data: Internship report por Frelat, Romain

“…I have also developed a tool to conduct automated analysis of Normalized Diference Vegetation Index (NDVI) from diferent optical satellite instruments AVHRR, Spot Vegetation). …”
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