High Spatial Resolution Images
Mostrando 13-24 de 58 artigos, teses e dissertações.
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13. A clinical gamma camera-based pinhole collimated system for high resolution small animal SPECT imaging
The main objective of the present study was to upgrade a clinical gamma camera to obtain high resolution tomographic images of small animal organs. The system is based on a clinical gamma camera to which we have adapted a special-purpose pinhole collimator and a device for positioning and rotating the target based on a computer-controlled step motor. We deve
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-12
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14. Analysis of landslides susceptibility and use and landcover evolution of Paraty City - RJ / Análise da suscetibilidade a escorregamentos e as implicações da evolução do uso e cobertura do solo no município de Paraty, RJ
The city of Paraty is located between the Angra dos Reis and Ubatuba municipalities, stages of a numerous episodes of landslides. As the neighboring cities is marked by the presence of the Serra do Mar, where the shallow landslides in the form of translational movements account for most of the evolution of relief. And yet, there is no reference to deaths ass
Publicado em: 2010
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15. Investigação do uso de imagens de sensor de sensoriamento remoto hiperespectral e com alta resolução espacial no monitoramento da condição de uso de pavimentos rodoviários. / Investigation of use hyperspectral and high spatial resolution images from remote sensing in pavement surface condition monitoring.
Segundo a Agência Nacional de Transportes Terrestres (ANTT) em seu Anuário Estatístico dos Transportes Terrestres AETT (2008), o Brasil em todo o seu território possui 211.678 quilômetros de rodovias pavimentadas. O valor de serventia do pavimento diminui com o passar do tempo por dois fatores principais: o tráfego e as intempéries (BERNUCCI et al., 2
Publicado em: 2010
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16. Estudo de materiais magnéticos através de técnicas fototérmicas : efeito magnetocalórico e filmes finos / Study of magnetic materials using photothermal techniques : magnetocaloric effect and thin films
The magnetocaloric effect (MCE) has been widely studied because of its possible application in magnetic refrigeration. The search for suitable materials has intensified over the last decade, with a demand not only for the preparation of new materials but also for their complete characterization. The aim of this work is to apply the photothermal techniques to
Publicado em: 2010
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17. Methodological approaches to planar and volumetric scintigraphic imaging of small volume targets with high spatial resolution and sensitivity
Single-photon emission computed tomography (SPECT) is a non-invasive imaging technique, which provides information reporting the functional states of tissues. SPECT imaging has been used as a diagnostic tool in several human disorders and can be used in animal models of diseases for physiopathological, genomic and drug discovery studies. However, most of the
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-08
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18. Estimation of retangular objects in high resolution images using template matching / Estimação de objetos retangulares em imagens de alta resolução utilizando casamento de modelos
The study of urban environment arouses great interest on remote sensing, given the social and economic implications of such application. Technological advances have increased the images generation with great capacity to discriminate Earth surface targets, which have been used to gather information about these areas. Every scene comprehension system has a set
Publicado em: 2009
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19. Orthoretification of high-resolution images for application in rural technical cadastral and mapping of permanent preservation and legal reserve areas / Ortorretificação de imagens de alta resolução para aplicação em cadastro técnico rural e mapeamento de áreas de preservação permanente e reservas legais
Besides the vast interpretative information generated after being submitted to geometric corrections, high spatial resolution orbital images allow extracting geometric information (angles, distances and areas). Different correction methods can be used for this purpose. If the method used corrects relief influence, it carries out image orthoretification, and
Publicado em: 2009
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20. Target detection on sea surface using orbital SAR images / Detecção de alvos na superfície do mar utilizando imagens SAR orbitais
Target detection over ocean surface is very important to national security, once that Brazilian legal waters are the entrance for thounsands foreign ships every year, representing almost totally the Brazilian international trade. However, due to Brazilian coast size approximately 7,500 km is undoable to patrolling whole coastline only with Brazilian Navy (Ma
Publicado em: 2009
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21. Analise espacial de especies arboreas pertencentes a floresta estacional semidecidual e ao cerradão baseada em imagemns de alta resolução espacial / Spatial analysis of tree species from semi-deciduous seasonal forest and savana forest based on images with high sptaial resolution
O surgimento de sensores de alta resolução espacial permitiu que o nível de detalhamento das imagens de satélite chegasse ao ponto em que estudos de ecologia florestal pudessem ser realizados, através deste instrumento, com base em informações de espécies e indivíduos arbóreos. Tal tema de pesquisa é um campo promissor, já que a possibilidade de
Publicado em: 2009
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22. Classificação da cobertura da terra e do uso do solo urbano utilizando o sistema InterIMAGE e imagens do sensor QuickBird / Urban land cover and land use classification using the InterIMAGE system and QuickBird imagery
The object-based image analysis approach is presently the state of art for the classification of high spatial resolution imagery, specially in urban areas. Nevertheless, the cost of licenses of commercial software packages for these tasks is very high. InterIMAGE is an open source knowledge-based classification system whose image analysis concept is highly f
Publicado em: 2009
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23. Uso de imagens de alta e media resolução espacial no estudo de areas cafeeiras / Use of high and medium spatial resolution images in the study of coffee areas
O café sempre foi sinônimo de progresso e contribuiu de maneira decisiva para a industrialização do Brasil sendo, ainda hoje, um dos seus produtos agrícolas mais importantes. A obtenção de informações precisas, em tempo hábil e com baixo custo, sobre a extensão e o rendimento da cultura, são instrumentos valiosos para um planejamento adequado da
Publicado em: 2009
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24. ANÁLISE DE UM COMPÓSITO PULTRUDADO: MICROSCOPIA DIGITAL, CARACTERIZAÇÃO MECÂNICA E ENVELHECIMENTO / ANALYSIS OF A PULTRUDED COMPOSITE: DIGITAL MICROSCOPY, MECHANICAL CHARACTERIZATION AND AGING
A glass fiber-reinforced polymer-matrix pultruded composite was characterized by digital microscopy, image analysis, mechanical tests, and aging by water absorption and UV exposure. Both longitudinal and transverse samples were obtained from a composite plate and prepared for the several experiments. Mosaics of images obtained by Scanning Electron Microscopy
Publicado em: 2008