Proposal for underwater structural analysis using the techniques of ESPI and digital holography |
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Authors: | Jose Luis Valin Rivera JM Monteiro HM Lopes MAP Vaz Francisco Palacios Edison Gonalves Gilberto Garcia del Pino Jorge Ricardo Prez |
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Institution: | Jose Luis Valin Rivera, J.M. Monteiro, H.M. Lopes, M.A.P. Vaz, Francisco Palacios, Edison Gonçalves, Gilberto Garcia del Pino,Jorge Ricardo Pérez |
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Abstract: | The purpose of this article is to study the application of the holographic interferometry techniques in the structural analysis of submarine environment. These techniques are widely used today, with applications in many areas. Nevertheless, its application in submarine environments presents some challenges. The application of two techniques, electronic speckle pattern interferometry (ESPI) and digital holography, comparison of advantages and disadvantages of each of them is presented. A brief study is done on the influence of water properties and the optical effects due to suspended particles as well as possible solutions to minimize these problems. |
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Keywords: | Digital holography Underwater inspection Phase unwrapping Filter Phase fringe pattern |
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