Abstract: An estimate image is generated from a position and an angle of a camera and the estimate image is stored. A collating unit collates an estimate image with a scenery image, and corrects estimate values of a position and angles of the camera according to a result of the collation. An indication image generating unit generates an indication image by processing indication information stored in an indication information storing unit, based on position information that shows a position of the camera and angle information that shows angles of the camera after the correction processing stored in a position and angle information storing unit.

Abstract: An estimate image generating unit (26) generates an estimate image corresponding to estimate values of a position and an angle of a camera (10) stored in a position and angle information storing unit (25), and stores the estimate image into an estimate image storing unit (27). A collating unit (28) collates an estimate image with a scenery image, and corrects estimate values of a position and angles of the camera (10) according to a result of the collation. An indication image generating unit (29) generates an indication image by processing indication information stored in an indication information storing unit (23), based on position information that shows a position of the camera (10) and angle information that shows angles of the camera (10) after the correction processing stored in a position and angle information storing unit (25).