Patent ID: 8115852
Filing Date: 2012-02-14
Classification: H04N

Abstract:
1. An image display apparatus comprising: a display which displays an image based on an image signal; an ambient light measuring unit which measures the intensity of ambient light around the display; a brightness distribution measuring unit which measures a brightness distribution for each of a plurality of areas included in a scene, each of the plurality of areas including a predetermined number of pixels, when the image signal is obtained; a parameter calculator which calculates, for each of the plurality of areas, a correction parameter for correcting a partial contrast of the image based on the ambient light intensity and brightness distribution of each of the plurality of areas in the scene; and a contrast correction unit which corrects a partial contrast of the image by correcting the image signal for each of the plurality of areas by using the correction parameter calculated for each of the plurality of areas, wherein an area of the plurality of areas is (A) shifted in a horizontal direction by predetermined pixels each time the contrast correction for the area is completed, and (B) shifted in a vertical direction by predetermined pixels each time the contrast correction in the horizontal direction is completed.