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		<isbn>978-85-17-00088-1</isbn>
		<label>59643</label>
		<citationkey>ZaninMartPoz:2017:CoCoAt</citationkey>
		<title>Comparação dos Contornos Ativos Paramétricos e Geométricos na Extração de Corpos D?Águas em Imagens Orbitais</title>
		<format>Internet</format>
		<year>2017</year>
		<secondarytype>PRE CN</secondarytype>
		<numberoffiles>1</numberoffiles>
		<size>894 KiB</size>
		<author>Zanin, Rodrigo Bruno,</author>
		<author>Martins, Erico Fernando de Oliveira,</author>
		<author>Poz, Aluir Porfírio Dal,</author>
		<electronicmailaddress>rodrigo.zanin@unemat.br</electronicmailaddress>
		<editor>Gherardi, Douglas Francisco Marcolino,</editor>
		<editor>Aragão, Luiz Eduardo Oliveira e Cruz de,</editor>
		<e-mailaddress>daniela.seki@inpe.br</e-mailaddress>
		<conferencename>Simpósio Brasileiro de Sensoriamento Remoto, 18 (SBSR)</conferencename>
		<conferencelocation>Santos</conferencelocation>
		<date>28-31 maio 2017</date>
		<publisher>Instituto Nacional de Pesquisas Espaciais (INPE)</publisher>
		<publisheraddress>São José dos Campos</publisheraddress>
		<pages>7574-7581</pages>
		<booktitle>Anais</booktitle>
		<organization>Instituto Nacional de Pesquisas Espaciais (INPE)</organization>
		<transferableflag>1</transferableflag>
		<abstract>The need to update information for Geographic Information Systems (GIS) and considering the ease of obtaining orbital images and Remote Sensing data, implies an increasing need to obtain tools that can translate data from Remote Sensing, normally orbital images, in information, this work has as main objective to compare the two main active contour models, which are: parametric and geometric, known as Snakes and Level Set, respectively, to extract water bodies in orbital images. The proposed methodology was to make a qualitative comparison in this work. The images used to apply the models were binarized according to the well-known method of Otsu (1979), creating the same conditions for comparisons. The application of the active contour models were initialized with points, for the Level Set and small initial contours for the Snakes, always in the same positions. The methodology was applied in clippings of a scene taken in the Pantanal region of the State of Mato Grosso, with the PAN sensor, of the satellite CBERS-4, of April 2016. The results show that the application of the contour is directly linked to Characteristic of the feature in question and show that both models have reasonable behavior, given the characteristics of the features.</abstract>
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		<type>Áreas úmidas e águas interiores</type>
		<language>pt</language>
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