Abstract

Given the raising interest in light-field technology andthe increasing availability of professional devices, a feasi-ble and accurate calibration method is paramount to un-leash practical applications. In this paper we propose toembrace a fully non-parametric model for the imaging andwe show that it can be properly calibrated with little effortusing a dense active target. This process produces a denseset of independent rays that cannot be directly used to pro-duce a conventional image. However, they are an ideal toolfor 3D reconstruction tasks, since they are highly redundant, very accurate and they cover a wide range of different baselines. The feasibility and convenience of the process and the accuracy of the obtained calibration are compre-hensively evaluated through several experiments.