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Título:
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High dynamic range imaging method for interferometry
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Autores:
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Quiroga Mellado, Juan Antonio ;
Vargas, Javier ;
Restrepo, R. ;
Belenguer Dávila, Tomás
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Tipo de documento:
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texto impreso
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Editorial:
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Elsevier Science B. V., 2011-08-15
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Optica
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Tipo = Artículo
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Resumen:
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We demonstrate a method to easily and quickly extend the dynamic range imaging capabilities of the camera in a typical interferometric approach. The camera dynamic range is usually low and limited to 256 gray levels. Also, it is well known that one may have over or under-exposed regions in the interferogram (due to non-uniform illumination) which makes these image regions not reliable. In our proposed method it is not necessary to obtain or use the non-linear camera response curve in order to extend the camera dynamic range. We obtain a sequence of differently exposed interferograms, typically five or six; after that, we compute the corresponding normalized fringe patterns and modulation maps using a typical normalization method. These normalized patterns are combined through a temporal weighted average using as weights the corresponding modulation maps. We show a set of experimental results that prove the effectiveness of the proposed method.
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En línea:
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https://eprints.ucm.es/id/eprint/22204/1/QuirogaJA08.pdf
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