Patent ID: 6853935

Claim:
An information processing apparatus that derives the calibration information needed to measure the position and/or orientation of a measuring object based on the output values of a position and/or orientation sensor, comprising: a real image input unit, which is mounted on the measuring object, adapted to input a real image; a virtual image generation unit adapted to generate a virtual image of indices using geometry information of the indices to be captured by said real image input unit, and a predetermined position and/or orientation of said measuring object; a position and/or orientation sensor mounted directly or indirectly on the measuring object; an input unit adapted to input a user's instruction indicating that a position and/or orientation, which changes according to movement of a mixed reality display device, of the indices on the real image input by said real image input unit has been matched with a position and/or orientation of the indices on the virtual image generated by said virtual image generation unit; an acquisition unit adapted to acquire the output values from the position and/or orientation sensor according to the input by said input unit; and an operation unit adapted to derive the calibration information, based on the predetermined position and/or orientation and the output values of the position and/or orientation sensor acquired by said acquisition unit.