Image filtering method

摘要

A method of filtering an input image (50) is provided. In a creating action, a boolean tone map is created (56) based on the input image (50) and an array of tone nodes (54). In a determining action, it is determined (60) whether or not a target pixel (92) is in a tone region by examining the target pixel (92) and a neighboring region of pixels. If the target pixel (92) is in a tone region (62), in a selecting action, a first base-filter is selected (64) for the tone region. A method of resolution dependent filtering is also provided.