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An Approach on Determining the Displacements of the Pelvic Floor during Volunta...

The present study was conducted in order to establish a methodology based on the finite element method to simulate the contraction of the pelvic floor (PF) muscles. In the generated finite element model, a downward pressure of 90 cm H2O was applied, while actively contracting the PF muscles with different degrees of muscular activation (10, 50 and 100%). The finite element methodology of the active contraction ...

Métodos de segmentação para modelação 3D do ouvido a partir de imagens

O objectivo principal deste artigo centra-se na apresentação de métodos de segmentação de imagem adequados para a construção de modelos geométricos 3D das estruturas do ouvido a partir de imagens médicas de Tomografia Computorizada (TC), sendo discutidas as vantagens e desvantagens de cada um. Os métodos são classificados de acordo com as técnicas utilizadas; nomeadamente, em métodos de thresholding, de cluster...

Segmentation and simulation of objects represented in images using physical pri...

An Introduction to the Level Set Methods and its Applications

Determination of objects contours using physical principles

Segmentation and Simulation of Objects in Pedobarography images using Physical ...

The goals of the present work are to automatically extract the contour of an object and to simulate its deformation using a physical approach. Thus, to segment an object represented in an image, an initial contour is manually defined for it that will then automatically evolve until it equals the border of the desired object. The contour is modelled by a physical formulation, and its evolution to the desired fin...

Segmentation and Simulation of the Deformation of Objects Represented in Images...

The goal of this work is to automatically extract the contour of an object and to simulate its deformation using a physical approach. In this work, to segment an object represented in an image, an initial contour is manually defined for it that will then automatically evolve until it equals the border of the desired object. In our approach, the contour is modelled by physical formulation, using the Finite Eleme...

Segmentação e Simulação de Contornos em Imagens através de Processos Físicos

O objectivo principal deste trabalho é, a partir de duas imagens de um mesmo objecto em dois instantes distintos, simular as formas intermédias que o objecto assume quando o seu comportamento é guiado por princípios físicos. Para tal, é preciso começar por segmentar o objecto nas duas imagens em questão extraindo o seu contorno, após definição manual de um contorno inicial em cada uma delas. Seguidamente, cada ...

Using Physical Principles in the Segmentation of Objects Represented in Images

Usually, image segmentation is the first high-level task to extract information from an image, which can constitute one of the first steps to build a solid model of an organ and other structures of the human body, for example. Region segmentation distinguishes different areas of an image, and contour segmentation delimits the different regions by their frontiers. The main goal of this work is to extract the con...

International Journal for Computational Vision and Biomechanics, Vol. 2, No. 1,...