Dynamic range and depth of field extension using camera array

Abstract

Computational imaging aims to extend the capabilities of conventional imaging systems by extracting richer and more meaningful information through multiple captures or by modifying the camera’s sensors and optics. In this paper, a joint focus stacking and high dynamic range (HDR) imaging method is proposed to extend the limited depth of field and dynamic range of a typical camera. The proposed method acquires a set of input images from a camera array with varying exposure and depth of field, and performs focus stacking under exposure diversity. Experimental results show significant improvement in the dynamic range and depth of field of the final focus-stacked HDR image. Additionally, the proposed method effectively handles the ghosting artifacts during the fusion process.