Color Quantization
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Mistura de cores: uma nova abordagem para processamento de cores e sua aplicação na segmentação de imagens / Colors mixture: a new approach for color processing and its application in image segmentation
Inspired on the techniques used by painters to overlap layers of various hues of paint to create oil paintings, and also on observations of the distribution of cones in human retina for the interpretation of these colors, this thesis proposes an image processing technique based on color mixing. This is a static color quantization method that expresses the mi
Publicado em: 2009
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2. Development of areal time color classifier to robotics applications / Desenvolvimento de um sistema de classificação de cores em tempo real para aplicações robóticas
In computer vision, the detection of objects is a task of great importance. We can verify this by the existence of several methods proposed in the literature. Each one of these methods is based on some characteristics present in the image to reach an eficient performance. Considering environments that make use of colors for determining the objects present in
Publicado em: 2008
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3. Mapa auto-organizÃvel com campo receptivo adaptativo local para segmentaÃÃo de imagens
A new self-organizing map with variable topology is introduced for image segmentation. The proposed network, called Local Adaptive Receptive Field Self-organizing Map (LARFSOM) is based on the Self-organizing Map (SOM) and Grow When Required (GWR). The model main features are: adaptive final number of nodes, variable topology, new node insertion based on sim
Publicado em: 2007
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4. Proposal of a perception color histogram as characteristic for content-based image retrieval / Proposta de um histograma perceptual de cores como característica para recuperação de imagens baseada em conteúdo
This work aims at establishing a digital image classification methodology based on perceptual colors, by generating a feature vector that allows retrieving images from a database by their content. In related works the methodologies of grouping the diverse possible colors of an image do not allow associate digitized colors and those colors perceived by human
Publicado em: 2006
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5. Compressão Seletiva de Imagens Coloridas com Detecção Automática de Regiões de Interesse
There has been an increasing tendency on the use of selective image compression, since several applications make use of digital images and the loss of information in certain regions is not allowed in some cases. However, there are applications in which these images are captured and stored automatically making it impossible to the user to select the regions o
Publicado em: 2006
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6. Anti-inflamatory effect of the S-nitroso-N-acetyleysteine (SNAC) on left ventricular hypertrophy in hypercholesterolemic LDLr/mice / Efeito antiinflamatorio da S-nitroso-N-acetilcisteina (SNAC) na hipertrofia ventricular esquerda (HVE) em camundongos hipercolesterolemicos knockout para o receptor de LDL (LDLr-/-)
Recently, it has been that S-nitroso-N-acetylcysteine (SNAC) attenuate in 55% the plaque development in low-density lipoprotein-receptor-deficient (LDLr-/-) mice fed a hypercholesterolemic diet for 15 days. The present study was designed to verify whether deletion of the low-density lipoprotein (LDL) receptor gene may affect the hemodynamic profile and adren
Publicado em: 2006