Lightfield super-resolution through turbulence

Juan M. Trujillo-Sevilla; Juan J. Fernández-Valdivia; Luis F. Rodríguez-Ramos; Óscar G. Cárdenes; José G. Marichal-Hernández; Bahram Javidi; José M. Rodríguez-Ramos

doi:10.1117/12.2177295

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22 May 2015 Lightfield super-resolution through turbulence

Juan M. Trujillo-Sevilla, Juan J. Fernández-Valdivia, Luis F. Rodríguez-Ramos, Óscar G. Cárdenes, José G. Marichal-Hernández, Bahram Javidi, José M. Rodríguez-Ramos

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Proceedings Volume 9495, Three-Dimensional Imaging, Visualization, and Display 2015; 94950Q (2015) https://doi.org/10.1117/12.2177295
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, Maryland, United States

Abstract

In this paper, we use information from the light field to obtain a distribution map of the wavefront phase. This distribution is associated with changes in refractive index which are relevant in the propagation of light through a heterogeneous or turbulent medium. Through the measurement of the wavefront phase from a single shot, it is possible to make the deconvolution of blurred images affected by the turbulence. If this deconvolution is applied to light fields obtained by plenoptic acquisition, the original optical resolution associated to the objective lens is restored, it means we are using a kind of superresolution technique that works properly even in the presence of turbulence. The wavefront phase can also be estimated from the defocused images associated to the light field: we present here preliminary results using this approach.

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Juan M. Trujillo-Sevilla, Juan J. Fernández-Valdivia, Luis F. Rodríguez-Ramos, Óscar G. Cárdenes, José G. Marichal-Hernández, Bahram Javidi, and José M. Rodríguez-Ramos "Lightfield super-resolution through turbulence", Proc. SPIE 9495, Three-Dimensional Imaging, Visualization, and Display 2015, 94950Q (22 May 2015); https://doi.org/10.1117/12.2177295

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