DI-Retinex: Digital-Imaging Retinex Theory for Low-Light Image Enhancement

arXiv:2404.03327v1 Announce Type: new
Abstract: Many existing methods for low-light image enhancement (LLIE) based on Retinex theory ignore important factors that affect the validity of this theory in digital imaging, such as noise, quantization error, non-linearity, and dynamic range overflow. In this paper, we propose a new expression called Digital-Imaging Retinex theory (DI-Retinex) through theoretical and experimental analysis of Retinex theory in digital imaging. Our new expression includes an offset term in the enhancement model, which allows for pixel-wise brightness …

abstract arxiv cs.cv digital digital imaging dynamic eess.iv error image imaging light low noise overflow paper quantization theory type