Approximation and blind reconstruction of volumetric light field

Recovering the real light field, including the light field intensity distributions and continuous volumetric data in the object space, is an attractive and important topic with the developments in light-field imaging. In this paper, a blind light field reconstruction method is proposed to recover the intensity distributions and continuous volumetric data without the assistant of prior geometric information. The light field reconstruction problem is approximated to be a summation of the localized reconstructions based on image formation analysis. Blind volumetric information derivation is proposed based on backward image formation modeling to exploit the correspondence among the deconvoluted results. Finally, a light field is blindly reconstructed via the proposed inverse image formation approximation and wave propagation. We demonstrate that the method can blindly recover the light field intensity with continuous volumetric data. It can be further extended to other light field imaging systems if the backward image formation model can be derived.