Power-constrained contrast enhancement using locality-preserving histogram equalization

As mobile devices become more widespread, consumers increasingly demand greater image quality and longer battery lives. However, improving photo capabilities comes at the expense of battery life. In this paper, a power-constrained contrast enhancement method formulated as an optimization problem is proposed. The proposed locality condition is used to improve the conventional histogram equalization, whereas power constraint is used to reduce the power consumption of the enhanced image. The experiment results show that the proposed method effectively enhances the quality of the images.