In order to provide high-quality image display by correcting and uniformizing the nonuniformity of electron emission characteristics, a predetermined arithmetic operation is performed by using correction values for correcting the nonuniformities of luminance caused by the electron emission devices when a predetermined voltage is applied thereto, thereby calculating correction values when the voltage having a plurality of voltage amplitude values is applied thereto. Corrected image data are calculated on the basis of the calculated correction values, and a drive signal is outputted to drive the electron emission devices on the basis of the corrected image data.