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%0 Conference Proceedings
%4 dpi.inpe.br/ambro/1998/05.06.14.10
%2 sid.inpe.br/banon/2001/03.30.15.55.57
%@isbn 85-244-0103-6
%T A mathematical morphology approach to the characterization of astronomical objects
%D 1996
%A Candeas, Alcione Jandir,
%A Braga Neto, Ulisses de Mendonça,
%A Carvalho Filho, Edson Costa de Barros,
%E Velho, Luiz,
%E Albuquerque, Arnaldo de,
%E Lotufo, Roberto A.,
%B Simpósio Brasileiro de Computação Gráfica e Processamento de Imagens, 9 (SIBGRAPI)
%C Caxambu
%8 29 out. - 1 nov. 1996
%I Sociedade Brasileira de Computação
%J Porto Alegre
%P 235-242
%S Anais
%1 SBC - Sociedade Brasileira de Computação; UFMG - Universidade Federal de Minas Gerais
%X We deal in this work with a broadly studied topic in astronomical imaging, namely the star/galaxy discrimination problem. Through the use of Mathematical Morphology, we propose an original approach to the characterization of these astronomical objects, which is based on gray-level shape information. The main steps in our method are image pre-processing, segmentation and feature extraction, all of which employ Mathematical Morphology tools that were implemented using the MMach toolbox for the Khoros system. We present a comparison between our segmentation results, based on the watershed method, and those of a classical software package SExtractor. The shape information is extracted through the use of the gray-level morphological pattern spectrum, which yields very satisfactory shape features, that promise to be very suitable for future work in neural-network automatic classification.
%9 Morfologia Matemática
%@language en
%3 a66.pdf


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