The present invention provides an information processing device that acquires a captured image including depth information that is captured by an image capturing device including a depth sensor, and determines whether a positional relationship between a person being watched over and a region of a bed satisfies a predetermined condition, based on the depth for each pixel. In the case where a state in which the depth for each pixel within the captured image cannot be acquired by the depth sensor continues for a given period of time or longer, the information processing device notifies that there is a possibility that watching over of the person being watched over is not being performed normally.
