Bounding function for fast computation of transmission in single image dehazing

Abstract

There exist multiple dehazed images corresponding to a single hazy image due to ill-posed nature of single image dehazing (SID), making it a challenging problem. Usually, the SID used atmospheric scattering model (ASM) to obtain haze-free image from a hazy image. According to ASM, recovery of lost visibility depends upon accurate transmission. The proposed method presents a linear multiplicative bounding function (MBF) for estimation of difference channel (DC) to compute the value of transmission. The results obtained by the MBF has been compared with renowned SID methods. The accuracy of the proposed MBF has been proved by visual and objective evaluation of the dehazed images.