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		<isbn>978-85-17-00088-1</isbn>
		<label>60086</label>
		<citationkey>DuvergerORBSVRS:2017:AlEsDi</citationkey>
		<title>Algorithm for estimating distance between waves crests using coastal images RGB from Google Earth</title>
		<format>Internet</format>
		<year>2017</year>
		<secondarytype>PRE CN</secondarytype>
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		<size>1396 KiB</size>
		<author>Duverger, Soltan Galano,</author>
		<author>Ojea, Silvia Maria Rodríguez,</author>
		<author>Rodríguez, Claudia Bolívar,</author>
		<author>Betancourt, Yudelsy Carrillo,</author>
		<author>Sanchéz, Sergio L. Lorenzo,</author>
		<author>Vasconcelos, Rodrigo Nogueira de,</author>
		<author>Rocha, Washington de Jesus Sant'Anna da Franca,</author>
		<author>Silva, Marcus Vinicius Rios da,</author>
		<author>Juvena,</author>
		<electronicmailaddress>solkan1201@gmail.com</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>1574-1581</pages>
		<booktitle>Anais</booktitle>
		<organization>Instituto Nacional de Pesquisas Espaciais (INPE)</organization>
		<transferableflag>1</transferableflag>
		<abstract>Studies about sea waves go from their structure until the effects caused by their interaction with the coast border. Energy estimation of the waves, stream direction and intern waves estimation researches with the aid of aerial and radar images are quite extensive. One of the main object of oceanology studies is the coral reef barrier due that they are ecological and physical structures that diminish a big fraction of the swell strength and also sustain high levels of marine coastal biodiversity. Actual climate change and global warming are leading to the degradation of reefs structures; so, surveillance tools for monitoring changes, degradation or loss of those important structures are more needed that ever. This study introduces an easy methodology for the analysis of the waves energy dissipation before and after they hits the reefs, extracting automatically information about wave distance, central line and width of their crests from Google Earth images and Stitch Maps program. Information from the images is extracted using just digital image processing and plane geometry tools. Despite the low spectral resolution of this kind of images, this study demonstrated that they are very useful for quick analysis of wave behavior and also to analyses its loos of energy when they collide with the reefs, also permitting to analyze, in a subjective way, changes in the coral reef.</abstract>
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		<language>en</language>
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		<url>http://marte2.sid.inpe.br/rep-/sid.inpe.br/marte2/2017/10.27.12.21</url>
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