1. A stereoscopic image generation device that generates a stereoscopic image including a right-eye image and a left-eye image, comprising: an image enlarging/reducing unit that enlarges or reduces the right-eye image and the left-eye image which constitute stereoscopic image data, wherein the image enlarging/reducing unit enlarges or reduces the right-eye image and the left-eye image on the basis of parallax amount adjustment information, which includes a position of a right-eye-image reference point and a position of a left-eye-image reference point which are respectively provided at different positions for the right-eye image and the left-eye image, and enlargement ratios of the right-eye image and the left-eye image, with reference to the right-eye-image reference point and the left-eye-image reference point, on the basis of the enlargement ratios.