1. A position recognition method, comprising: transmitting an indicator signal to a plurality of light emitters, wherein the plurality of light emitters are located in a predetermined image-capturing region for an image-capturing unit, are arranged irregularly, and each have identification information, and wherein the indicator signal includes a light emission signal for enabling at least one target light emitter of the plurality of light emitters to emit light and identification information of the at least one target light emitter, and the indicator signal includes no position information of the at least one target light emitter; obtaining a spatial image by capturing an image of the image-capturing region; detecting at least one light source from the at least one target light emitter which emits the light in response to the transmitted indicator signal by analyzing the spatial image; calculating at least one spatial coordinate corresponding to the detected at least one light source; and correlating the at least one spatial coordinate with the transmitted identification information of the at least one target light emitter.