Image Normalization
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. TVDI spatiotemporal pattern of a soybean growing area in humid subtropical climate
ABSTRACT The most southern Brazilian state, Rio Grande do Sul, is characterized by high crop yield and is, currently, the third leading soybean producer in the country. Therefore, agriculture is very important to the economy of the region. Because agriculture is highly dependent on variable weather parameters, the present study aimed to test the Temperature-
Bragantia. Publicado em: 2017-07
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2. Volumetric T1 and T2 magnetic resonance brain toolkit for relaxometry mapping simulation
Abstract Introduction Relaxometry images are an important magnetic resonance imaging (MRI) technique in the clinical routine. Many diagnoses are based on the relaxometry maps to infer abnormal state in the tissue characteristic relaxation constant. In order to study the performance of these image processing approaches, a controlled simulated environment is
Res. Biomed. Eng.. Publicado em: 10/10/2016
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3. Classifiers and machine learning techniques for image processing and computer vision / Classificadores e aprendizado em processamento de imagens e visão computacional
In this work, we propose the use of classifiers and machine learning techniques to extract useful information from data sets (e.g., images) to solve important problems in Image Processing and Computer Vision. We are particularly interested in: two and multi-class image categorization, hidden messages detection, discrimination among natural and forged images,
Publicado em: 2009
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4. Tableau: an environment for didactic board image processing / Tableau: um ambiente para processamento de imagens de quadros didÃticos
O uso de cÃmeras digitais, devido ao seu custo baixo, portabilidade e boa qualidade de imagem, tem se tornado cada dia mais usual. Uma das aplicaÃÃes nÃo originalmente prevista, que vem se tornando corriqueira, à a fotografia de quadros didÃticos e de reuniÃes para uso posterior. à freqÃente que fotos de quadros didÃticos englobem nÃo sà a lousa,
Publicado em: 2009
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5. Mapeamento de areas de cafe no municipio de Guaxupe/MG por meio de processamento digital de imagens Landsat / Coffee crop areas mapping in mountain relief through Principals Components Analysis
The economic importance of Brazilian coffee growing in the world market is notorious and makes up significant portion of the country s foreign trade exports. Minas Gerais stands out as the core of Brazilian coffee growing, with most of the planting areas (Coffea arabica) concentrated in the south, where it is grown in small plots widely spread throughout the
Publicado em: 2009
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6. Comparison between illumination normalization methods used to improve the rate of facial recognition / Comparação entre métodos de normalização de iluminação utilizados para melhorar a taxa do reconhecimento facial
Distinct lighting conditions in an image can produce unequal representations of the same object, compromising segmentation and pattern recognition processes, including facial recognition. Hence, the lighting distribution on an image is considered of great importance, and normalization algorithms using new techniques have still been researched. This research
Publicado em: 2008
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7. Pipeline for macro- and microarray analyses
The pipeline for macro- and microarray analyses (PMmA) is a set of scripts with a web interface developed to analyze DNA array data generated by array image quantification software. PMmA is designed for use with single- or double-color array data and to work as a pipeline in five classes (data format, normalization, data analysis, clustering, and array maps)
Brazilian Journal of Medical and Biological Research. Publicado em: 13/04/2007
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8. Spectral dynamic of the soybean crop along the vegetative cycle and its relation with the yield in the western region of Parana state / Dinamica espectral da cultura da soja ao longo do ciclo vegetativo e sua relação com a produtividade na região oeste do Parana
Estudos e pesquisas referentes ao acompanhamento da produção agropecuária têm um peso determinante e estratégico na economia do país. Nos últimos anos, essas pesquisas vêm sofrendo grandes transformações para se tornarem menos subjetivas. A associação das técnicas de sensoriamento remoto e métodos estatísticos podem proporcionar uma visão sin
Publicado em: 2007
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9. Uma ferramenta computacional para processamento de imagens obtidas por cineangiocardiografia e avaliação da função ventricular esquerda
Cineangiocardiography has been considered the most reliable technique to examine cardiac functions. Although subjective visual interpretation of ventriculography data is the most widely method used, many studies show a high interobsel Verand intraobserver variability. In order to perform a semiautomatic analysis of the left ventricle function, it has been de
Publicado em: 1993
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10. Processamento de dados multiespectrais, obtidos por plataformas orbitais da série LANDSAT, para estudos da qualidade da água na Baía de Guanabara / Processing multispectral data obtained by orbital platforms of the LANDSAT series for studies of water quality in Guanabara bay
In this paper we try to establish the grade of relationship existing among various Guanabara Bay water quality parameters and LANDSAT MSS video data. We have chosen an empirical: basis approach, but we had to select, from the available data, some parameters as follows: chlorophyll, water transparency using Secchi disk, salinity and dissolved ammonia. Only tw
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/06/1980
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11. Empirical evaluation of data transformations and ranking statistics for microarray analysis
There are many options in handling microarray data that can affect study conclusions, sometimes drastically. Working with a two-color platform, this study uses ten spike-in microarray experiments to evaluate the relative effectiveness of some of these options for the experimental goal of detecting differential expression. We consider two data transformations
Oxford University Press.
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12. Direct phase determination in protein electron crystallography: The pseudo-atom approximation
The crystal structure of halorhodopsin is determined directly in its centrosymmetric projection using 6.0-Å-resolution electron diffraction intensities, without including any previous phase information from the Fourier transform of electron micrographs. The potential distribution in the projection is assumed a priori to be an assembly of globular densities
The National Academy of Sciences of the USA.