UM MÉTODO PARA A CONEXÃO E APROXIMAÇÃO POLIGONAL DE ELEMENTOS DE BORDAS EM IMAGENS DIGITAIS
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Abstract
Este trabalho apresenta um método para a conexão de pixels de borda, com o
objetivo de segmentar as retas definidas pelas descontinuidades nos tons de cinza
em imagens digitais. Este método é baseado na técnica de Varredura e Rotulação,
em relação à qual foram propostos vários passos adicionais para a efetiva extração
de feições retas. O método também possui uma alternativa baseada no processo de
perseguição de contorno. Todas as modificações foram desenvolvidas após estudos
sobre imagens aéreas reais, sendo apresentados resultados obtidos com dados
sintéticos e dados reais.
A method for edge pixel connection and straight-line segmentation
in digital images
Abstract
In this paper a method for edge pixel connection is presented, aiming at the
segmentation of the straight-lines defined by gray level discontinuities in digital
images. This proposed method is based on the Scan and Label technique, with was
improved with several additional steps aiming at effective straight line extraction.
An alternative based on the edge following technique was also implemented. All the
improvements were developed after extensive experiments with real aerial images.
Some results obtained with synthetic and real data are presented.
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