To provide a technique capable of estimating a camera position without having high
processing performance.SOLUTION: An
optical wireless communication
system includes a plurality of light sources, a receiving device including an event camera, and an
information processing device. Each of the plurality of light sources transmits an
optical wireless communication
signal. The receiving device receives the
optical wireless communication
signal via the event camera. The optical
wireless communication
signal includes position-related information for identifying a position in an absolute coordinate
system of a transmission source of the optical
wireless communication signal. The
information processing device identifies a
signal region of the optical
wireless communication signal in an
image plane coordinate
system of an
image plane obtained by the event camera to acquire a
light source image position indicating a position at which each of the plurality of light sources is projected in the
image plane coordinate system, acquires a
light source absolute position indicating a position at which each of the plurality of light sources is located in the absolute coordinate system on the basis of the position-related information included in the optical wireless communication signal, and uses the
light source image position and the light source absolute position to estimate a position and a direction of the event camera in the absolute coordinate system.SELECTED DRAWING: Figure 1