A mobile terminal, comprising: a communicator configured to communicate with a display, the display comprising a plurality of panels (111, 112, 113, 114) and being configured to output optical information; an image capturing device configured to obtain an image of the display; a memory configured to store information in which light-emission characteristics of models of displays are mapped to response characteristics of models of image capturing devices of mobile terminals, and a processor configured to: compensate the obtained image using a response characteristic of the image capturing device, the response characteristic of the image capturing device being a characteristic of a camera, included in the image capturing device, configured to recognize optical information from the display, and generate, using the compensated image, an adjustment signal to adjust the output of the optical information, wherein the communicator is further configured to transmit the adjustment signal to the display to permit the display to adjust the output of the optical information, and wherein the processor is further configured to obtain information indicating the response characteristic of the image capturing device of the mobile terminal that is mapped to a light-emission characteristic of the display from the memory by identifying a model of the display and a model of the mobile terminal, and compensate the obtained image using the obtained information. a communicator configured to communicate with a display, the display comprising a plurality of panels (111, 112, 113, 114) and being configured to output optical information; an image capturing device configured to obtain an image of the display; a memory configured to store information in which light-emission characteristics of models of displays are mapped to response characteristics of models of image capturing devices of mobile terminals, and a processor configured to: compensate the obtained image using a response characteristic of the image capturing device, the response characteristic of the image capturing device being a characteristic of a camera, included in the image capturing device, configured to recognize optical information from the display, and generate, using the compensated image, an adjustment signal to adjust the output of the optical information, compensate the obtained image using a response characteristic of the image capturing device, the response characteristic of the image capturing device being a characteristic of a camera, included in the image capturing device, configured to recognize optical information from the display, and generate, using the compensated image, an adjustment signal to adjust the output of the optical information, wherein the communicator is further configured to transmit the adjustment signal to the display to permit the display to adjust the output of the optical information, and wherein the processor is further configured to obtain information indicating the response characteristic of the image capturing device of the mobile terminal that is mapped to a light-emission characteristic of the display from the memory by identifying a model of the display and a model of the mobile terminal, and compensate the obtained image using the obtained information.