Provided is an examination apparatus including a target image acquiring section that acquires a target image obtained by capturing an examination target; a target image masking section that masks a portion of the target image; a masked region predicting section that predicts an image of a masked region that is masked in the target image; a reproduced image generating section that generates a reproduced image using a plurality of predicted images predicted respectively for the plurality of masked regions; and a difference detecting section that detects a difference between the target image and the reproduced image.