1 : An information processing apparatus comprising: an image acquisition unit that acquires a real space image including an image of another apparatus; a coordinate system generation unit that generates a spatial coordinate system of the real space image acquired by the image acquisition unit; and a transmission unit that transmits spatial information constituting the spatial coordinate system generated by the coordinate system generation unit to the other apparatus sharing the spatial coordinate system; and an acquisition unit that acquires the spatial coordinate of the other apparatus and a spatial coordinate of its own apparatus, wherein the transmission unit transmits the other spatial coordinate and the spatial coordinate of its own apparatus to the other apparatus as the spatial information.