Patent ID: 9489900
Filing Date: 2016-11-08
CPC Classification: G02F,G09G

Claim Text:
1. A display device comprising: a two-dimensional display to display a display image that is observed by an observer; a camera which takes an image of a side on which the display image of the display is displayed; a face image detection circuit which detects a face image of the observer, from a taken image that is taken by the camera; a range specifying circuit which specifies a visual field of a reflected object on a front surface of the display, wherein the visual field is visually recognizable by the observer, wherein the visual field is specified based on positional relation between the front surface of the display and the camera, and wherein the range specifying circuit specifies a position of the face image in the taken image; a reflection brilliance estimation circuit which estimates a reflection brilliance distribution, based on brilliance information of the taken image in the visual field, the reflection brilliance distribution indicating a reflection brilliance of the reflected object at each point of the front surface of the display; and a display brilliance correction circuit which corrects a display brilliance of the display image to be displayed on the display, such that an unevenness of the reflection brilliance is reduced, based on the reflection brilliance distribution estimated by the reflection brilliance estimation circuit, wherein the camera performs the image taking at least at a proper exposure and a lower exposure than the proper exposure, the face image detection circuit detects the face image of the observer, using a taken image taken at the proper exposure by the camera, the reflection brilliance estimation circuit estimates the reflection brilliance distribution, using a taken image taken at the lower exposure than the proper exposure by the camera, the display brilliance correction circuit corrects the display brilliance in accordance with a certain characteristic curve regardless of the reflection brilliance distribution, and the dynamic range of the certain characteristic curve is compressed, relative to a characteristic curve in an ordinary display.