Illumination Estimation for Nature Preserving low-light image enhancement

In this paper, we proposed a new low-light image enhancement

approach to overcome the above limitations. The

proposed algorithm is named as Nature Preserving Lowlight

Image Enhancement (NPLIE). NPLIE estimates initial

illumination and performs optimal refinement. The proposed

algorithm computes the reflectance component through an

element-wise division of input image by illumination. The enhanced image is obtained as a product of adjusted illumination and reflectance component. In this work, we estimate initial

illuminance from structure-aware smoothening of a low-light

image using guided filters of variable box sizes. We compute

refined illumination by solving the proposed multi-objective