Patent ID: 7916158

Claim:
An image display apparatus for controlling image quality based on an image signal comprising: a chroma adjustment unit which adjusts chroma of the image signal; a detection unit which detects color histogram information and average brightness level information from the image signal; a control unit which controls the chroma adjustment unit and calculates an amount of chroma adjustment based on an incidence rank of a predetermined amplitude part in the detected color histogram information, and the detected average brightness level information; and a display unit which displays an image based on the image signal subjected to the amount of chroma adjustment; wherein the control unit calculates the amount of chroma adjustment so as to decrease color saturation of the image signal when the detected average brightness level information is lower than a first predetermined value and an incidence of a large amplitude part in the detected color histogram information is lower than a second predetermined value or an incidence of a small amplitude part in the detected color histogram information is higher than the second predetermined value.