• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Master's Dissertation
DOI
https://doi.org/10.11606/D.55.2018.tde-03012018-110753
Document
Author
Full name
Christian Cesar Bones
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2004
Supervisor
Committee
Bruno, Odemir Martinez (President)
Santana, Regina Helena Carlucci
Travieso, Gonzalo
Title in Portuguese
Paralelização da transformada de Hough
Keywords in Portuguese
Não disponível
Abstract in Portuguese
Este trabalho tem o objetivo de paralelizar a transformada de Hough, de modo a diminuir o tempo de execução. A transformada de Hough é um método que realiza o reconhecimento de curvas paramétricas em imagens, sendo sua mais conhecida utilização o reconhecimento de retas. Neste trabalho são consideradas algumas das estratégias de paralelização da transformada de Hough, encontradas na literatura. Estas estratégias são implementadas para as arquiteturas MIMD de memória distribuída e MIMD de memória compartilhada, utilizando as ferramentas de desenvolvimento de programas paralelos OpenMP, Pthreads e MPI. Deste modo, são analisados e comparados os algoritmos e estratégias de paralelismo da transformada de Hough sobre às arquiteturas MIMD compartilhada e MIMD distribuída. Através dos resultados e análises obtidos pelo trabalho, é possível, além de uma melhor compreensão da transformada de Hough paralela, definir as combinações entre estratégias, ferramentas e arquiteturas, que apresentam o menor tempo de execução.
Title in English
Not available
Keywords in English
Not available
Abstract in English
This work has the objective of parallelizing the Hough transform, in order to reduce its execution time. Hough transform is a method that carries through the recognition of parametric curves in images, being the recognition of straight lines its most known use. This work considers some of the parallel Hough transform strategies found in literature. These strategies are implemented for MIMD architectures with distributed memory and MIMD with shared memory, using parallel programs development tools, such as OpenMP, Pthreads and MPI. In this way, the Hough transform parallelism algorithms and strategies are analyzed and compared over shared MIMD and distributed MIMD architectures. Through the results and analysis obtained from the work, it is possible, besides a better understanding of the parallel Hough transform, to define the combinations between strategies, tools and architectures, which present the smaller execution time.
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
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.
  • BRUNO, O. M., e BONES, C. C. Análise do desempenho da transformada de Hough paralela em arquiteturas de memória compartilhada. INFOCOMP (UFLA), 2007, vol. 6, p. 75-82.
All rights of the thesis/dissertation are from the authors
CeTI-SC/STI
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2024. All rights reserved.