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Filtragem de sinograma tomográfico afetado por ruído Poisson utilizando wavelets anisotrópicas
(Universidade Federal de São Carlos, 2017-02-07)
The diagnostic imaging by computed tomography has become popular in recent decades. As the image acquisition method is effected by exposing the human body to X-ray dose (ionizing radiation), the frequent realization of ...
Novas propostas em filtragem de projeções tomográficas sob ruído Poisson
(Universidade Federal de São Carlos, 2010-05-24)
In this dissertation we present techniques for filtering of tomographic projections with Poisson noise. For the filtering of the tomogram projections we use variations of three filtering techniques: Bayesian estimation, ...
Abordagens não-locais para filtragem de ruído Poisson
(Universidade Federal de São Carlos, 2014-05-23)
A common problem to applications such as positron emission tomography, low-exposure X-ray imaging, fluorescence microscopy, optical and infrared astronomy, and others, is the degradation of the original signal by Poisson ...
Análise quantitativa de culturas de neurônios em matrizes de microeletrodos por meio do processamento de imagens de microscopia confocal de fluorescência
(Universidade Federal de São Carlos, 2015-03-09)
Microelectrode arrays (MEA) are devices that allow chemical and electrical stimulation and recording of the extracellular electrical activity from entire neuronal cultures over long periods of time, such as several weeks. ...
Otimização inteligente da decomposição de elemento estruturante em morfologia matemática binária
(Universidade Federal de São Carlos, 2014-03-14)
When working with binary images, mathematical morphology provides powerful tools for analyzing them. Along with genetic algorithms, it allows various computational tasks that are performed autonomously. In recent decades, ...
Sistema de auxílio à navegação para portadores de deficiência visual
(Universidade Federal de São Carlos, 2014-12-16)
Aid to navigation systems can be used to help the visually impaired to perform daily tasks, such as their mobility and orientation. The objective of this project is to develop a prototype of an aid to navigation system for ...
Redução de dimensionalidade usando agrupamento e discretização ponderada para a recuperação de imagens por conteúdo
(Universidade Federal de São Carlos, 2012-11-19)
This work proposes two new techniques of feature vector pre-processing to improve CBIR and image classification systems: a method of feature transformation based on the k-means clustering approach (Feature Transformation ...
Método de processamento digital de imagens para inferência da qualidade de materiais preparados com fibras vegetais
(Universidade Federal de São Carlos, 2013-08-02)
This Dissertation presents a method development based on image processing techniques, which enables the verification and quality analysis of organic fibers mixture in thermoplastic starch (TPS). In order to do this analysis, ...
Análise da evolução da dinâmica de uma cultura de neurônios dissociados em matriz de microeletrodos usando Coerência Parcial Direcionada e Redes Complexas
(Universidade Federal de São Carlos, 2012-08-18)
Multi-Electrode Array, MEA, was developed more than thirty years ago. This planar device of multiple microelectrodes has been used to detect local electric potential variations created by the ion movement through the protein ...
Simulador de arquitetura para processamento de imagens usando programação genética cartesiana
(Universidade Federal de São Carlos, 2013-12-20)
The tools offered by the area of Mathematical Morphology are very effective when applied to the analysis of binary images, which it is of great importance in areas such as: robotic vision, visual inspection, among others. ...