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Application of Shape From Shading Technique for Side Scan Sonar Images

Abstrakt

Side scan sonar (SSS) is one of the most widely used imaging systems in the underwater environment. It is relatively cheap and easy to deploy in comparison with more powerful sensors like multibeam echosounder or synthetic aperture sonar. Although, the SSS does not provide directly the seafloor bathymetry measurements. Its outputs are usually in a form of grey level acoustic images of seafloor. However, the analysis of such images performed by human eye allows creating semi-spatial impressions on seafloor relief and morphology. The 3D shape reconstruction from 2D images using SFS approach is one of classical problems in computer vision. In the paper, some methods based on Shape From Shading (SFS) technique for SSS images processing are presented. In the first method, the 3D seafloor relief is reconstructed using the information from both the currently processed and previous ping. The second method relies on the estimating the altitude gradient of the insonified surface from sonar data, combined with the use of shadow areas dimension. It is applied for 3D objects shape reconstruction and imaging.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
Polish Maritime Research nr 20, strony 39 - 44,
ISSN: 1233-2585
Język:
angielski
Rok wydania:
2013
Opis bibliograficzny:
Bikonis K., Moszyński M., Łubniewski Z.: Application of Shape From Shading Technique for Side Scan Sonar Images// Polish Maritime Research. -Vol. 20, nr. 3 (79) (2013), s.39-44
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.2478/pomr-2013-0033
Weryfikacja:
Politechnika Gdańska

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