Image display device and method of correcting image data

An image display device including a display unit including a plurality of right-eye pixels for displaying a right-eye image and a plurality of left-eye pixels for displaying a left-eye image, the image display device being for displaying a stereoscopic image based on image data including gradation values of a plurality of pixels including the plurality of right-eye pixels and the plurality of left-eye pixels, the image display device comprising:

• a plurality of correction tables storing correction values corresponding to combinations of a gradation value of a processing target pixel and a gradation value of an adjacent pixel that is a pixel adjacent to the processing target pixel;
• a correction table selection unit configured to select one correction table from the plurality of correction tables depending on conditions;
• and
• a gradation value correction unit configured to take the plurality of pixels one by one as the processing target pixel, and to correct the gradation value of the processing target pixel based on the correction table selected by the correction table selection unit.