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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

Estudo e implementação de \'Software\' dedicado para um sistema de visualização de imagens. / Study and implementation of dedicated Software for an image visualization system.

Traina, Agma Juci Machado 08 July 1991 (has links)
Este trabalho descreve o desenvolvimento de um sistema de \"software\" para processamento, visualização e manipulação de imagens tomográficas obtidas por RM. Primeiramente, foi desenvolvido um sistema para uma estação de trabalho Interpro 32&#176C, da Intergraph. Este sistema foi desenvolvido de forma amigável, utilizando-se janelas e \"menus\", para efetuar a interação com o usuário. Foram analisadas e implementadas várias operações de processamento de imagens, tais como: filtros digitais, manipulação da imagem através do seu histograma e medidas estatísticas sobre regiões da imagem. A experiência e o conhecimento obtido com esta implementação, (oram utilizados para definir e desenvolver um novo ambiente gráfico, para uma arquitetura de \"hardware\" baseada no processador gráfico TMS34010 da Texas Instruments, previamente desenvolvida no Laboratório de Instrumentação Eletrônica (LIE). Este ambiente, que suporta menus e janelas, foi desenvolvido utilizando-se das instruções gráficas inerentes à família TMS340. Foram desenvolvidas rotinas de comunicação com o hospedeiro, as quais permitem, por exemplo, que as imagens armazenadas no hospedeiro sejam transmitidas para a arquitetura dedicada. As mesmas rotinas foram utilizadas para depurar e validar o sistema gráfico. / The present work describes the development of a software system to process, visualize and manipulate Magnetic Resonance Images. First an application software W8S developed for an Interpro 32&#176C Intergraph workstation. In this menu and window based 8Oftware, image operations such as filters, transformations and image manipulation based on histograms with statistical data was implemented and evaluated. The knowledge and experience obtained with this implementation was subsequently used to define and design a new graphic environment for a dedicated TMS340 based hardware architecture previously developed in our laboratory. This new toolkit provides window and menu support, and was developed through extensive use of the powerful TMS340 native graphics instructions. Debugging and tracing routines were developed based on an implemented host (PC) - graphics processor board communication system. The same communication software was also used in the examples to perform menu selected downloads of images and functions from the host.
2

Estudo e implementação de \'Software\' dedicado para um sistema de visualização de imagens. / Study and implementation of dedicated Software for an image visualization system.

Agma Juci Machado Traina 08 July 1991 (has links)
Este trabalho descreve o desenvolvimento de um sistema de \"software\" para processamento, visualização e manipulação de imagens tomográficas obtidas por RM. Primeiramente, foi desenvolvido um sistema para uma estação de trabalho Interpro 32&#176C, da Intergraph. Este sistema foi desenvolvido de forma amigável, utilizando-se janelas e \"menus\", para efetuar a interação com o usuário. Foram analisadas e implementadas várias operações de processamento de imagens, tais como: filtros digitais, manipulação da imagem através do seu histograma e medidas estatísticas sobre regiões da imagem. A experiência e o conhecimento obtido com esta implementação, (oram utilizados para definir e desenvolver um novo ambiente gráfico, para uma arquitetura de \"hardware\" baseada no processador gráfico TMS34010 da Texas Instruments, previamente desenvolvida no Laboratório de Instrumentação Eletrônica (LIE). Este ambiente, que suporta menus e janelas, foi desenvolvido utilizando-se das instruções gráficas inerentes à família TMS340. Foram desenvolvidas rotinas de comunicação com o hospedeiro, as quais permitem, por exemplo, que as imagens armazenadas no hospedeiro sejam transmitidas para a arquitetura dedicada. As mesmas rotinas foram utilizadas para depurar e validar o sistema gráfico. / The present work describes the development of a software system to process, visualize and manipulate Magnetic Resonance Images. First an application software W8S developed for an Interpro 32&#176C Intergraph workstation. In this menu and window based 8Oftware, image operations such as filters, transformations and image manipulation based on histograms with statistical data was implemented and evaluated. The knowledge and experience obtained with this implementation was subsequently used to define and design a new graphic environment for a dedicated TMS340 based hardware architecture previously developed in our laboratory. This new toolkit provides window and menu support, and was developed through extensive use of the powerful TMS340 native graphics instructions. Debugging and tracing routines were developed based on an implemented host (PC) - graphics processor board communication system. The same communication software was also used in the examples to perform menu selected downloads of images and functions from the host.
3

Adaptivní regulátory s prvky umělé inteligence / Adaptive Controllers with Elements of Artificial Intelligence

Šulová, Markéta January 2009 (has links)
The aim of the thesis is to improve the control quality of the adaptive systems (Self Tuning Controllers). The thesis mainly deals with problematical identification part of the adaptive system. This part demonstrates a weak point for existing adaptive systems. Paradoxically, the quality of the adaptive system depends mainly on the identification part because on the basis of the process model obtained by identification are worked out parameters of a control part, afterwards the control action plan is established. Knowledge of the modern control methods is used and a new identification algorithm for closed loop identification is proposed. This simple, fast and efficient algorithm overcomes all disadvantages of current classical identification methods based on least mean-square algorithms. The possibility of the choice of a short sample time, one tuning parameter ability to adjust the control process, the ability to identify processes in real use belong to its main goals. This algorithm was built in the adaptive system and then it was tested on a set of simulation and real models with surprisingly excellent results. The successful implementation of the algorithm into the programmable logic controller was also realized. One part of the thesis introduces a new universal graphics environment for testing and verifying control algorithms.

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