Patent ID: 9460651
Filing Date: 2016-10-04
CPC Classification: G09G

Claim Text:
1. An image processing apparatus, comprising: an image input unit configured to receive input image data from an external image source to obtain grayscale values for a display image; a modeling unit configured to calculate a luminance change ratio of a display image for each grayscale value according to a change of an on-pixel ratio of a display panel and a final luminance reflected by the luminance change ratio; a grayscale re-mapping unit configured to determine a compensation grayscale value for compensating a luminance change ratio according to the on-pixel ratio of the input image data to display a target luminance corresponding to a predetermined grayscale value included in grayscale values; and an image output unit configured to output output image data compensating the input image data by the compensation grayscale value, wherein the grayscale re-mapping unit is configured to calculate the compensation grayscale value corresponding to the grayscale value of the input image data according to the on-pixel ratio of the input image data, and wherein the compensation grayscale value is calculated by applying a compensation constant to offset an error by the on-pixel ratio that is changed according to a characteristic of the display panel by grayscale compensation.