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Previous issue date: 2001-03-10 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / This work proposes the development of an intelligent system for analysis of digital mammograms, capable to detect and to classify masses and microcalcifications. The digital mammograms will be pre-processed through techniques of digital processing of images with the purpose of adapting the image to the detection system and automatic classification of the existent calcifications in the suckles. The model adopted for the detection and classification of the mammograms uses the neural network of Kohonen by the algorithm Self Organization Map - SOM. The algorithm of Vector quantization, Kmeans it is also used with the same purpose of the SOM. An analysis of the performance of the two algorithms in the automatic classification of digital mammograms is developed. The developed system will aid the radiologist in the diagnosis and accompaniment of the development of abnormalities / Este trabalho prop?e o desenvolvimento de um sistema inteligente para an?lise de mamogramas digitais, capaz de detectar e classificar massas e microcalcifica??es. O mamograma digital ser? pr?-processado atrav?s de t?cnicas de processamento digital de imagens com finalidade de adequar a imagem ao sistema de detec??o e classifica??o autom?tica das calcifica??es existentes na mama. O modelo adotado para a detec??o de anomalias e classifica??o dos mamogramas utiliza a rede neural de Kohonen treinada pelo algoritmo Self Organization Map - SOM. O algoritmo de quantiza??o vetorial, Kmeans ? tamb?m utilizado com a mesma finalidade do SOM. Uma an?lise de desempenho dos dois algoritmos para atuarem na classifica??o autom?tica de mamogramas digitais ? desenvolvida. O sistema desenvolvido auxiliar? ao mastologista no diagn?stico e acompanhamento do desenvolvimento de anormalidades
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15265 |
| Date | 10 March 2001 |
| Creators | Soares, Heliana Bezerra |
| Contributors | CPF:10749896434, http://lattes.cnpq.br/1987295209521433, Brito J?nior, Agostinho de Medeiros, CPF:87830574472, http://lattes.cnpq.br/0958617290020120, Costa, Jos? Alfredo Ferreira, CPF:53820126449, http://lattes.cnpq.br/9745845064013172, Lotufo, Roberto de Alencar, CPF:94574570806, http://lattes.cnpq.br/9224426261471914, Carvalho, Marco Ant?nio Garcia de, D?ria Neto, Adri?o Duarte |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia El?trica, UFRN, BR, Automa??o e Sistemas; Engenharia de Computa??o; Telecomunica??es |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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