1. A stereoscopic image processing apparatus comprising: an acquiring unit operable to acquire a stereoscopic view image which includes a left eye image and a right eye image, the stereoscopic view image representing a stereoscopic image by means of parallax between the left eye image and the right eye image; an extracting unit operable to extract a subject region from the acquired stereoscopic view image, the subject region giving a stereoscopic image of a specific subject; a calculating unit operable to calculate a length of the extracted subject region in a parallax direction; and an image correcting unit operable to adjust parallax at an edge of the subject region based on the calculated length of the subject region in the parallax direction.