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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

[en] REVERSE ENGINEERING FOR CAD MODELS USING SHAPE DESCRIPTORS AND SUPPORT VECTOR MACHINE / [pt] ENGENHARIA REVERSA EM MODELOS CAD UTILIZANDO DESCRITORES DE FORMA E MÁQUINA DE VETORES DE SUPORTE

ANDRE DE SOUZA MOREIRA 23 February 2016 (has links)
[pt] Modelos CAD 3D têm desempenhado um importante papel no gerenciamento de projetos de engenharia. Em vários desses modelos é perceptível a presença de diversos objetos com representações implícitas sendo representados por malhas triangulares. Ainda que apropriada para o rendering, a utilização de malhas triangulares traz consigo algumas desvantagens, como a ambiguidade em objetos pouco discretizados. A engenharia reversa visa a reconstrução dessa representação discreta em sua representação contínua original. Neste trabalho, propomos uma metodologia para a reconstrução de geometrias em modelos CAD utilizando Support Vector Machines e Descritores de Forma. / [en] 3D CAD Models have played an important role in engineering projects management. It is noticeable in many of these files the presence of several objects with implicit representation that end up being represented as triangular meshes. Although suitable for rendering, the triangular mesh representation brings some drawbacks, such as the ambiguity in objects with low discretization rate. The reverse engineering aims to reconstruct this discrete representation to its original continuous representation. In this work, we propose a novel methodology for geometry reconstruction in CAD models using Support Vector Machines and Shape Descriptors.

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