Our aim is to approximate the nonlinear function by a piecewise linear function as follows: (1) where is th subset in partitioning of as. As we know, this partitioning has bel- low properties: 1) 2) ...

The canonical representation of piecewise-linear (PWL) functions provides a global compact formulation of continuous PWL functions, which has significant advantages in the research and applications ...

As digital cameras have become popular in recent years, image enhancement for dark pictures is widely applied in post-processing. We propose a method to not only enhance the contrast entirely with ...