1. An image display device comprising: a detecting portion that detects a motion amount of an input image signal; and an edge enhancing portion that executes edge enhancement processing to the input image signal, and increasing an edge enhancement level of the edge enhancement processing to an area having a larger motion amount of the input image signal, wherein a control portion is included that reduces the edge enhancement level of the edge enhancement processing or does not execute the edge enhancement processing if it is recognized that a high-frequency component included in the input image signal is not attenuated in the course of generation of the input image signal even in the area having a larger motion amount of the input image signal based on genre information indicative of a content type that the input image signal belongs to.