Patent ID: 7467061

Claim:
An information processing method for calculating the position and orientation of an imaging device for capturing images of a scene, the information processing method comprising: a first image input step of inputting a first image captured by the imaging device; a second image input step of inputting a second image captured by bird's-eye-view imaging means for performing image capturing from a bird's-eye view position of the imaging device; an orientation input step of inputting a measured orientation value from an orientation sensor for measuring information concerning the orientation of the imaging device; a first detecting step of detecting, from the first image input in the first image input step, a first-index image-coordinate feature value concerning the image coordinates of a first index disposed in the scene; a second detecting step of detecting, from the second image input in the second image input step, a second-index image-coordinate feature value concerning the image coordinates of a second index disposed on the imaging device; and a position-and-orientation calculating step of calculating the position and orientation of the imaging device by using the first-index image-coordinate feature value detected in the first detecting step, the second-index image-coordinate feature value detected in the second detecting step, and the measured orientation value input in the orientation input step.