Method and apparatus for enhancing a digital image by applying an inverse histogram-based pixel mapping function to pixels of the digital image

摘要

A method and associated device wherein an inverse histogram based pixel mapping step is combined with an edge enhancement step such as unsharp masking. In such an arrangement the inverse histogram based pixel mapping step improves the performance of the unsharp masking step, serving to minimize the enhancement of noise components while desired signal components are sharpened.