Light field reconstruction from projection modeling of focal stack
Chang Liu, Jun Qiu, Ming Feng Jiang · Optics Express · 2017
This paper aims to reconstruct the object-side light field from the focal stack focusing on different imaging planes. In the forward problem, the focal stack was modeled as projections of the light field. Based on projection modeling, both the filtered-backprojection(FBP) method and the Landweber iterative scheme of solving the inverse problem regarding light field reconstruction from focal stack were derived by applying the methods of computerized tomography(CT). The experimental results show that the high-precision light field can be reconstructed via FBP and Simultaneous-Algebraic-Reconstruction-Technique(SART) algorithm, and depth and surface of the scene can be reconstructed via the reconstructed light field.