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Master's Dissertation
DOI
https://doi.org/10.11606/D.55.2018.tde-03012018-112511
Document
Author
Full name
Ricardo Fabbri
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2004
Supervisor
Committee
Bruno, Odemir Martinez (President)
Batista Neto, João do Espírito Santo
Costa, Luciano da Fontoura
Title in Portuguese
Comparação e desenvolvimento de algoritmos de transformada de distância euclidiana e aplicações
Keywords in Portuguese
Não disponível
Abstract in Portuguese
A Transformada de Distância (TD) é um operador geral que constitui a base de diversos algoritmos em visão computacional e geometria discreta, com grande poder de aplicação prática. No entanto, todos os diversos algoritmos ótimos para o cálculo da TD euclideana (TDE) exata surgiram apenas a partir da década de 1990. Não estava claro quais são os melhores algoritmos de de TDE exata, nem mesmo se realmente são exatos. Além disso, a implementação de tais métodos não é trivial e muitas vezes difícil de ser realizada eficientemente a partir da descrição nos artigos. Neste trabalho, são comparados experimentalmente e teoricamente os principais algoritmos de TDE, visando-se obter conclusões mais sólidas das diferenças de desempenho e exatidão de cada um. Os algoritmos também são descritos de maneira unificada e inédita nesta dissertação. Tais realizações são essenciais não só na teoria, mas também para viabilizar a aplicação prática dos algoritmos rápidos de TDE.
Title in English
Not available
Keywords in English
Not available
Abstract in English
The Distance Transform (DI') is a general operator forming the basis of many algorithms in computer vision and geometry, with great potential for practical applications. Howover, ali the various optimal optimal algorithms for the computation of the exact Euclidean DT (EDT) were proposed only in the 1990 decade. Until now, it was not clear which are the best exact EDT algorithms, nor even if they are really exact. Moreover, their implementation is non-trivial and often difficult to perform efficiently using only the descriptions in the original papers. In this work, the main EDT algorithms are compared in theory and practice. in an effort to reach more Kolid conclusions of their differeces in speed and their exactness. These realizations are essential not only in theory, but also to increase the applicability of bleeding-edge TDE algorithms.
 
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RicardoFabbri.pdf (3.92 Mbytes)
Publishing Date
2018-01-03
 
WARNING: The material described below relates to works resulting from this thesis or dissertation. The contents of these works are the author's responsibility.
  • FABBRI, Ricardo, et al. 2D Euclidean Distance Transforms: A Comparative Survey [doi:10.1145/1322432.1322434]. ACM Computing Surveys [online], 2008, vol. 40, p. 1-48.
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