A Single Image Enhancement Technique Using Dark Channel Prior

• DOI: 10.3390/app11062712
• Publication Date: 2021-03-18T15:41:06Z
• Authors: Cong Wang; Mingli Ding; Yongqiang Zhang; Lina Wang
• Keywords: Diffuse sky radiation

In this paper, we propose a novel single image enhancement technique for defogging by using dark channel prior. The traditional prior methods have problems of high time complexity, edge effect, and failure To overcome the complexity firstly, four-point weighting algorithm is proposed to estimate atmospheric light value accurately, used rough transmittance. Then, gray-scale input refine After that, an scattering model designed restore fog-free image. solve problem that can not process brightness area, combination detection maximum inter-class variance segment sky area non-sky area. Finally, improved method processing via sequential decomposition handling Extensive experiments show only reduce but also effectively improve effect. At same time, it