Deep Single-Exposure HDR Imaging Approaches

Abstract

The purpose of single-exposure HDR image reconstruction is to recover the missing information in the saturated region of the LDR image, and use neural network to reconstruct the HDR image. In recent years, single-exposure HDR imaging using deep learning (DL) has made significant progress. In this study, the latest development of deep single-exposure HDR imaging method was comprehensively and deeply investigated and analyzed. At present, there are five main methods for deep single-exposure HDR imaging: direct learning from a single LDR image, generating bracketed LDR image stacks, computationally efficient learning, learning camera imaging pipeline, and learning neural sensors. Importantly, this study reviewed the limitations and future work of each category. In addition, this study also discussed the potential and future trends of each category constructively.