1. A processor, comprising: a first image processing unit which extracts, from each of a plurality of captured image data respectively captured with different focused object distances, a plurality of focused object image data which includes image data of the focused object included in each of the plurality of captured image data but does not include image data of unfocused object therein, in accordance with each of the different focused object distances; and a second image processing unit which generates a plurality of corrected object image data by correcting brightness of the extracted plurality of focused object image data so that a brightness of the focused object image data corresponding to a first focused object distance becomes smaller than a brightness of the focused object image data corresponding to a second focused object distance that is shorter than the first focused object distance; generates a plurality of shifted corrected object image data by shifting a position of an object of the plurality of corrected object image data by parallax amounts corresponding to the respective focused object distances; and generates different eye image data with a different eye from an eye of the captured image data by synthesizing the plurality of shifted corrected object image data according to shifted positions of the shifted corrected objects.