A High Resolution Image Space
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Inclusão de MRI e informação multigrid a priori para inferência bayesiana de fontes de M/EEG / MRI image and multigrid a priori information for bayesian M/EEG source localization
Functional Neuroimaging has evolved in the last few decades with the introduction of techniques such as Positron Emission Tomography or PET and Functional Magnetic Ressonance Image or fMRI [Belliveau et al., 1991]. These allow observing brain activity with a resolution of a few millimeters and, due to the nature of the signal, a time resolution of the order
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/04/2011
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2. Modelo cartográfico digital temático para simulação e previsão de inundações no município de Porto Alegre - RS
Desastres naturais sempre fizeram parte da vida dos seres humanos, porém nos últimos anos devido ao crescimento dos grandes centros urbanos, da dificuldade de aplicação e cumprimento de políticas de preservação ambiental e de alterações climáticas crescentes, as catástrofes naturais estão se tornando comuns, e no caso particular deste estudo os d
Publicado em: 2011
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3. Sistema de alto desempenho para compressão sem perdas de imagens mamográficas
The usage of mammographic image databases in digital form and the practice of telemedicine require to store and to transmit large amounts of data. The image digitization from a single mammographic exam with appropriate resolution can take up to 120MB of space in disk, which becomes even more critical when considering the large number of exams per day on a cl
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/04/2010
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4. 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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5. Extração de atributos de forma e seleção de atributos usando algoritmos genéticos para a classificação de regiões / Shape feature extraction and feature selection using genetic algorithm for region classification
Discrimination power of earth surface targets has been continuously bettered with the increasing remote sensors technological advances. Urban systems applications are one of the areas that recently took benefit of these advances, particularly when using high resolution remote sensing data. In this scale, however, it is often necessary to take into account th
Publicado em: 2007
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6. USE OF THE GEOPROCESSING AND THE HIGH-RESOLUTION IMAGE FOR THE ECOTOURISM PLANNING IN MORRO DO ELEFANTE - SANTA MARIA/RS / UTILIZAÇÃO DO GEOPROCESSAMENTO E IMAGEM DE ALTA RESOLUÇÃO PARA O PLANEJAMENTO DO ECOTURISMO NO MORRO DO ELEFANTE - SANTA MARIA/RS
The present paper has applied geoprocessing techniques in association with space high-resolution images in order to develop an experimental work by generating thematic maps which may be useful for the planning process of the ecotourism. The generated cartographic products were: ecotourism map, use of the land and vegetal covering, clinographic, hypsometric,
Publicado em: 2006
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7. Avaliação da geometria do produto Ikonos Geo / Geometric evaluation of Ikonos Geo product
Geometric correction of satellite images is relevant to cartographic applications and to integrate these images in geographic information systems. Image correction consists in the distortion elimination, caused by the sensor and by the observed object, through models of image geometry and ancillary information such as digital terrain model and control points
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/09/2005
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8. Estimação da resolução espacial da câmera CCD dos satélites CBERS 1 e 2 / Spatial resolution estimation of CBERS CCD camera
The first China-Brazil Earth Resources Satellite (CBERS-1) was launched in 1999 and was substituted on 2003 by CBERS-2. CBERS- 1 and CBERS-2 have the same specifications and carry three sensors: a Wide Field Imager (WFI), a High Resolution CCD Camera (CCD) and an Infrared Multispectral Scanner (IRMSS). Due to the limitations of the sensor components (diffrac
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/03/2005
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9. Sistema semi-automático de registro e mosaico de imagens / Automaticregistrationandmosaickingsystemforremotely.
Image registration is an important operation in remote sensing applications that basically involves the identification of many control points in the images. As the manual identification of control points may be time-consuming and tedious several automatic techniques have been developed. This paper describes a system for automatic registration and mosaic of r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/08/2002
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10. Sistema semi-automático de registro e mosaico de imagens / Automaticregistrationandmosaickingsystemforremotely.
Image registration is an important operation in remote sensing applications that basically involves the identification of many control points in the images. As the manual identification of control points may be time-consuming and tedious several automatic techniques have been developed. This paper describes a system for automatic registration and mosaic of r
Publicado em: 2002
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11. Optical sectioning of microbial biofilms.
Scanning confocal laser microscopy (SCLM) was used to visualize fully hydrated microbial biofilms. The improved rejection of out-of-focus haze and the increased resolution of SCLM made it preferable to conventional phase microscopy for the analysis of living biofilms. The extent of image improvement was dependent on the characteristics of individual biofilms
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12. Dynamic contrast-enhanced magnetic resonance imaging reveals stress-induced angiogenesis in MCF7 human breast tumors.
The mechanism of contrast enhancement of tumors using magnetic resonance imaging was investigated in MCF7 human breast cancer implanted in nude mice. Dynamic contrast-enhanced images recorded at high spatial resolution were analyzed by an image analysis method based on a physiological model, which included the blood circulation, the tumor, the remaining tiss