Image Enhancement
Mostrando 13-24 de 73 artigos, teses e dissertações.
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13. Abismos superficiais: antinomias do ornamento
The ornament in visual arts a pictorial element that functions as a complement or beauty enhancement in a visual composition - is considered the most banal, and even disposable aspect of images. But this superficiality is only apparent, masking a complexity that unfolds in a series of formal, symbolic and theoretical questions. In this way, the ornament can
Publicado em: 2010
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14. Análise de métodos de realce espectral e temporal aplicados à discriminação de classes de uso e cobertura da terra em áreas de Cerrado / Analysis methods of spectral and temporal enhancement applied to class discrimination use and land cover in areas Closed
O bioma Cerrado tem destaque nacional e internacional em virtude de sua dimensão, cerca de 205 milhões de hectares do território, além de se destacar como uma das áreas de importância global para a biodiversidade. Com 9,2% de sua área assegurada na forma de parque ou reserva ecológica, estudos do mapeamento da cobertura vegetal apontam um cenário de
Publicado em: 2010
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15. Evaluation of influence of DICOM and JPEG formats in the reproducibility of cephalometric landmarks in digital Frontal Teleradiographies / Avaliação da influência dos formatos DICOM e JPEG na reprodutibilidade de pontos cefalométricos em Telerradiografia digital em Norma Frontal
The digital image on DICOM format request a large store size capability, making difficult the transmission through internet, usually requesting the image compression via JPEG file format. The aim of this study was to evaluate the influence of DICOM and JPEG file formats on Quality Factors 100, 80 and 60, in the reproducibility intra and interexaminer at ceph
Publicado em: 2009
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16. DETECTION OF MASSES IN MAMMOGRAPHY IMAGES USING CELLULAR NEURAL NETWORKS, STATISCAL FUNCTIONS VECTOR MACHINES AND SUPPORT / DETECÇÃO DE MASSAS EM IMAGENS MAMOGRÁFICAS USANDO REDES NEURAIS CELULARES, FUNÇÕES GEOESTATÍSTICAS E MÁQUINAS DE VETORES DE SUPORTE
Breast cancer presents high occurrence frequency among the world population and its psychological effects alter the perception of the patients sexuality and the own personal image. Mammography is an x-ray of the mamma that allows the precocious detection of cancer, since it is capable to showing lesions in their initial stages, typically very small lesions i
Publicado em: 2009
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17. Realce de contraste em imagens digitais usando equalização de histograma
Nowadays devices are able to capture and process images from complex surveillance monitoring systems or from simple mobile phones. In certain applications, the time necessary to process the image is not as important as the quality of the processed images (e.g., medical imaging), but in other cases the quality can be sacrificed in favour of time.This thesis f
Publicado em: 2008
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18. Suporte a sistemas de auxílio ao diagnóstico e de recuperação de imagens por conteúdo usando mineração de regras de associação / Supporting Computer-Aided Diagnosis and Content-Based Image Retrieval Systems through Association Rule Mining
In this work we take advantage of association rule mining to support two types of medical systems: the Content-based Image Retrieval (CBIR) and the Computer-Aided Diagnosis (CAD) systems. For content-based retrieval, association rules are employed to reduce the dimensionality of the feature vectors that represent the images and to diminish the semantic gap t
Publicado em: 2008
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19. Self image and personality traits in the search for Aesthetic Plastic Surgery. / Auto-imagem e características de personalidade na busca de cirurgia plástica estética
In the last years, several researches have attempted to identify the psychological motivations associated to the ever increasing search for Aesthetic Plastic Surgery (APS). However the complexity of this subject and the methodological diversity of studies make it difficult for any evidences to be conclusive and further research is mandatory. In this context,
Publicado em: 2008
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20. Extrapolação espectral na restauração de imagens tridimensionais de microscopia ótica de fluorescência
The study of living cells, isolated or in tissues, in several applications, requires the use of microscopy techniques. The fluorescence microscopes are specially important for making possible images with enhancement of specific structures and detection of biological processes. However, microscopes, like other optical systems, corrupt images so that many deta
Publicado em: 2008
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21. Observer variability in the application of morphologic and dynamic criteria according to the Breast Imaging Reporting and Data System for MRI / Variação entre observadores na aplicação dos critérios morfológicos e cinéticos propostos pelo BI-RADS® (Breast Imaging Reporting and Data System) para ressonância magnética das mamas
OBJECTIVE. The purpose of this study was to assess the variability among observers with different degree of breast MR expertise in the use of the Breast Imaging Reporting and Data System (BI-RADS®) standardized MR lexicon and to evaluate if the variability in lesion description has any implication over lesion final category and management recommendation bef
Publicado em: 2008
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22. Radiografia digital e a tecnica de subtração no monitoramento da desmineralização e remineralização do esmalte dentario / Digital radiography and the subtraction technique for monitoring dental enamel demineralization and remineralization
O objetivo deste estudo in vitro foi comparar dois protocolos de remineralização em lesões de cárie no esmalte dentário, avaliados por meio de análises de cálcio (Ca) e fósforo (Pi), dureza do esmalte, microscopia de luz polarizada e subtração radiográfica digital (SRD); avaliar a viabilidade da utilização de dois diferentes sistemas de radiogra
Publicado em: 2008
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23. Sistema de agentes poligínicos para esteganálise de imagens digitais
In this work, we propose a multi agent system for digital image steganalysis, based on the poliginic bees model. Such approach aims to solve the problem of automatic steganalysis for digital media, with a case study on digital images. The system architecture was designed not only to detect if a file is suspicious of covering a hidden message, as well to extr
Publicado em: 2007
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24. Caracterização fisica de ambientes carsticos atraves de sensoriamento remoto e SIG : o caso do Parque Nacional Cavernas do Peruaçu - Januaria/ Itacarambi, MG / Characterization of karstic environments by means of remote sensing and GIS : the case of Cavernas do Peruaçu National Park, Januaria/ Itacarambi, Minas Gerais State, Brazil
This dissertation deals with the characterization of karstic environments through the use of remote sensing and GIS techniques, using as a case study the Cavernas do Peruaçu National Park, located in Januária and Itacarambi counties, Minas Gerais State, Brazil. The selection of this area was due to its relevance in terms of the speleological, archeological
Publicado em: 2007