1. A display control method executed by a computer, the display control method comprising: acquiring an image captured by a camera; displaying first object data corresponding to a reference object on a screen, when an image of the reference object is detected as being included in a first range in the captured image; and transitioning to a mode of continuously displaying the first object data corresponding to the reference object, when the image of the reference object is continuously detected as being included in a second range in the captured image for a predetermined time, even after the image of the reference object is no longer detected as being included in the first range in the captured image.