Object Coding
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. O empreendedorismo de base tecnológica no complexo público de pesquisa em Minas Gerais: um olhar pelo calidoscópio da Teoria Ator-Rede
This thesis aimed at understanding how and under which circumstances researchers and the Public Institutions of Science and Technology (PIST) in the state of Minas Gerais interact to develop a technology-based entrepreneurship (TBE) that takes place at the Public Complex of Scientific Research (PCSR). Thus, this work sought to describe the actions that lead
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/08/2011
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2. Video segmentation based on motion coherence of particles in a video sequence
This work describes an approach for object-oriented video segmentation based on motion coherence. Using a tracking process based on adaptively sampled points (namely, particles), 2-D motion patterns are identified with an ensemble clustering approach. Particles are clustered to obtain a pixel-wise segmentation in space and time domains. The segmentation resu
Publicado em: 2011
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3. SOCRATES : Sistema Orientado a objetos para CaRActerização de refaToraçõES / Object oriented system for characterization of refactorings
Refactoring is the activity of modifying a computer program s source code without changing its external behavior. In other words, it consists of changing a software system s structure without affecting its functionalities. The changes are done in order to let the code more understandable for humans that might work on it. In this sense, its goal is to lower m
Publicado em: 2006
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4. CONTRIBUIÇÕES ÀS ABORDAGENS SA-DCT E DCT BASEADA EM BLOCOS PARA CODIFICAÇÃO DE IMAGENS ORIENTADA POR OBJETO / CONTRIBUTIONS TO THE SA-DCT AND BLOCK-BASED DCT APPROACHES FOR OBJECT-ORIENTED IMAGE CODING
Esta tese examina e apresenta contribuições para a codificação de textura intra-quadro na codificação de imagens baseada em objeto. Duas abordagens de codificação são focadas: a DCT baseada em blocos e a DCT adaptativa à forma (SA-DCT). São propostos indicadores morfológicos para extrair características de forma e textura intrínsecas ao objeto
Publicado em: 2004
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5. CODIFICACIÓN DE FORMA ARBITRARIA A TRAVÉS DE DWT Y SPIHT ADAPATAD A LA FORMA / ARBITRARILY SHAPED OBJECT CODING USING SHAPE-ADAPTATIVE DWT AND SHAPE-ADAPTATIVE SPIHT / CODIFICAÇÃO DE OBJETOS DE FORMA ARBITRÁRIA ATRAVÉS DE DWT E SPIHT ADAPTATIVOS À FORMA
Codificação de objetos de forma arbitrária extraídos de imagens regulares é um dos assuntos de maior desafio nos mais recentes padrões de codificação de vídeo (MPEG-4). Neste estudo, é proposta uma nova estratégia de codificação de objetos envolvendo maior eficiência na decomposição e quantização de sub-bandas. A técnica de transformação
Publicado em: 2001
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6. Uma arquitetura de software baseada em padrões de projeto para o desenvolvimento de aplicações concorrentes confiaveis
Complex computer systems are prone to errors of many kinds, and the most reasonable way of dealing with them is to accept that any complex system has faults and to employ appropriate features for tolerating them during run time. We claim that the most beneficial way of achieving fault tolerance in complex systems is to use system structuring which has fault
Publicado em: 2001
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7. MATHEMATICAL AND EXPERIMENTAL APPROACHES IN SHAPE-ADAPTATIVE VIDEO CODING / ABORDAGENS MATEMÁTICAS E EXPERIMENTAIS EM CODIFICAÇÃO DE VÍDEO ADAPTATIVA À FORMA
This thesis investigates shape adaptative coding of arbitrarily shaped segments. The texture and contour coding efficiency is discussed and solutions to tackle the associated problems are proposed. The presented methods are evaluated using standard image sequences. A mathematical approach for shape-adaptative transforms using linear operators is developed, f
Publicado em: 2000
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8. Spatial-area selective retrieval of multiple object–place associations in a hierarchical cognitive map formed by theta phase coding
The human cognitive map is known to be hierarchically organized consisting of a set of perceptually clustered landmarks. Patient studies have demonstrated that these cognitive maps are maintained by the hippocampus, while the neural dynamics are still poorly understood. The authors have shown that the neural dynamic “theta phase precession” observed in t
Springer Netherlands.
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9. Olfactory computation and object perception.
Animals that are primarily dependent on olfaction must obtain a description of the spatial location and the individual odor quality of environmental odor sources through olfaction alone. The variable nature of turbulent air flow makes such a remote sensing problem solvable if the animal can make use of the information conveyed by the fluctuation with time of
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10. Different Spatial Scales of Shape Similarity Representation in Lateral and Ventral LOC
We investigated the relationship between stimulus similarity for a set of parameterized shapes and the spatial scale of neural representation within subregions of the lateral occipital complex (LOC) using a carryover functional magnetic resonance imaging design. In ventral but not lateral LOC, a linear recovery from adaptation proportional to shape dissimila
Oxford University Press.
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11. Neuronal Encoding of Texture in the Whisker Sensory Pathway
A major challenge of sensory systems neuroscience is to quantify brain activity underlying perceptual experiences and to explain this activity as the outcome of elemental neuronal response properties. Rats make extremely fine discriminations of texture by “whisking” their vibrissae across an object's surface, yet the neuronal coding underlying texture se
Public Library of Science.
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12. Shape perception reduces activity in human primary visual cortex
Visual perception involves the grouping of individual elements into coherent patterns that reduce the descriptive complexity of a visual scene. The physiological basis of this perceptual simplification remains poorly understood. We used functional MRI to measure activity in a higher object processing area, the lateral occipital complex, and in primary visual
National Academy of Sciences.