TY - JOUR
T1 - A Multi-Exposure Variational Method for Retinex
JO - East Asian Journal on Applied Mathematics
VL - 1
SP - 156
EP - 171
PY - 2018
DA - 2018/02
SN - 7
DO - http://doi.org/10.4208/eajam.310816.161216a
UR - https://global-sci.org/intro/article_detail/eajam/10741.html
KW - Retinex, reflectance, illumination, multi-exposure images, alternating minimization algorithm.
AB - <p style="text-align: justify;">Retinex theory explains how the human visual system perceives colors. The
goal of retinex is to decompose the reflectance and the illumination from the given
images and thereby compensating for non-uniform lighting. The existing methods for
retinex usually use a single image with a fixed exposure to restore the reflectance of the
image. In this paper, we propose a variational model for retinex problem by utilizing
multi-exposure images of a given scene. The existence and uniqueness of the solutions
of the proposed model have been elaborated. An alternating minimization method is
constructed to solve the proposed model and its convergence is also demonstrated. The
experimental results show that the proposed method is effective for reflectance recovery
in retinex problem.</p>