Patent ID: 8103119
Filing Date: 2012-01-24
Classification: G06T,H04N

Abstract:
1. An image processing device comprising: a parameter calculation unit that obtains a plurality of values after gradation conversion respectively based on a plurality of different gradation conversion characteristics for a target pixel in image data; a weighting unit that performs predetermined weighting on the plurality of values obtained by the parameter calculation unit; and a gradation correction unit that performs gradation correction of the target pixel in the image data based on a result of the weighting by the weighting unit, wherein: the weighting unit obtains an average brightness of neighboring pixels of the target pixel, performs the predetermining weighting on the plurality of values obtained by the parameter calculation unit according to the average brightness of the neighboring pixels, and generates a converted value by combining the plurality of values having performed the predetermined weighting; and the gradation correction unit includes a gain coefficient calculation unit that calculates a gain coefficient of the target pixel based on a value of the target pixel and the converted value, and performs the gradation correction of the target pixel in the image data according to the gain coefficient calculated by the gain coefficient calculation unit.