An information processing apparatus includes a self-position/self-orientation calculation unit calculating self-position and/or self-orientation in the predetermined coordinate system based on a marker in acquired imaged image data when it is determined that the marker exists within a predetermined area and the marker is imaged in the imaged image data and based on received position information and physical amounts measured by sensors for measuring the physical amounts to be used for autonomous navigation when the marker does not exist within the predetermined area or the marker is not imaged in the imaged image data.
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