PROCESSING APPARATUS AND PROCESSING METHOD FOR IMAGE SIGNAL, AND IMAGE DISPLAY APPARATUS UTILIZING THEREOF

摘要

PROBLEM TO BE SOLVED: To provide an image processing apparatus for enhancing the image quality of an edge part when enhancement processing or the like is applied to the edge part.

SOLUTION: A level of a flat part close to an edge part of an image signal V1 after enhancement processing is changed. The image processing apparatus detects a maximum value MAX and a minimum value MIN for a plurality of pixel data of an image signal V2 before the enhancement processing located in the vicinity of a target position in the image signal V1. A waveform discrimination part 158 discriminates a degree of complicatedness of the waveform of the image signal V2 on the basis of a plurality of the pixel data of the image signal V2 located in the vicinity of the target position in the image signal V1 to obtain a discrimination result α. The flat part close to the edge part provides a small discrimination result α. When a value x of the pixel data at the target position in the image signal V1 satisfies a relation of x>MAX or xCOPYRIGHT: (C)2004,JPO&NCIPI