IMAGE PROCESSOR, IMAGE PROCESSING METHOD, PROGRAM FOR EXECUTING THE SAME METHOD AND RECORDING MEDIUM HAVING THE RECORDED PROGRAM

摘要

PROBLEM TO BE SOLVED: To improve the image quality by determining image regions, based on band-divided coefficient signals and applying an optimum process to every attribute. SOLUTION: A filtering means 3 detects the feature quantity of characters or mesh dots using band-divided coefficient signals, and corrects the frequency characteristics suited to the characters or the dots, thereby controlling the sharpness of the characters.