ORIENTATION AND/OR POSITION ESTIMATION SYSTEM, ORIENTATION AND/OR POSITION ESTIMATION METHOD, AND ORIENTATION AND/OR POSITION ESTIMATION APPARATUS

The orientation and/or position estimation system includes: a movable operating unit configured to be held by a user and having an image capturing section; and a stereoscopic image providing unit including a display portion configured to display a stereoscopic image, a contact portion configured to come into contact with a part of a face of a user who is viewing the stereoscopic image, and a detection subject portion configured to be captured by the image capturing section. A detection subject portion image in the image captured by the image capturing section is detected and the position and the orientation of the movable image capturing unit are estimated on the basis of the detection subject portion image. On the basis of a result of the estimation, the stereoscopic image is generated and displayed.