An electronic device that is provided in a vehicle, the electronic device, comprising: an interface unit configured to electrically connect to a first camera and a second camera; wherein the first camera has a first coordinate system and the second camera has a second coordinate system different from the first coordinate system of the first camera; and a processor configured to: receive, via the interface unit, a forward view image including an object from the first camera; receive, via the interface unit, information about the object from the second camera; convert the information about the object in the second coordinate system of the second camera with respect to the first coordinate system of the first camera; generate an augmented reality, AR, graphic object corresponding to the object based on the converted information about the object; display the AR graphic object overlaid on the forward view image; wherein the processor is further configured to: control the first camera so as to capture the forward view image including the object at a first point in time, acquire information about a point in time when information about the object captured at the first point in time by the second camera is received from the second camera, compute a time difference between the first point in time and the point in time when the information about the object is received, and overlay the AR graphic object on the forward view image based on the time difference, wherein the time difference is the sum of time taken to generate information about the object and the time taken to transfer the information about the object to the interface unit. an interface unit configured to electrically connect to a first camera and a second camera; wherein the first camera has a first coordinate system and the second camera has a second coordinate system different from the first coordinate system of the first camera; and a processor configured to: receive, via the interface unit, a forward view image including an object from the first camera; receive, via the interface unit, information about the object from the second camera; convert the information about the object in the second coordinate system of the second camera with respect to the first coordinate system of the first camera; generate an augmented reality, AR, graphic object corresponding to the object based on the converted information about the object; display the AR graphic object overlaid on the forward view image; receive, via the interface unit, a forward view image including an object from the first camera; receive, via the interface unit, information about the object from the second camera; convert the information about the object in the second coordinate system of the second camera with respect to the first coordinate system of the first camera; generate an augmented reality, AR, graphic object corresponding to the object based on the converted information about the object; display the AR graphic object overlaid on the forward view image; wherein the processor is further configured to: control the first camera so as to capture the forward view image including the object at a first point in time, acquire information about a point in time when information about the object captured at the first point in time by the second camera is received from the second camera, compute a time difference between the first point in time and the point in time when the information about the object is received, and overlay the AR graphic object on the forward view image based on the time difference, wherein the time difference is the sum of time taken to generate information about the object and the time taken to transfer the information about the object to the interface unit. control the first camera so as to capture the forward view image including the object at a first point in time, acquire information about a point in time when information about the object captured at the first point in time by the second camera is received from the second camera, compute a time difference between the first point in time and the point in time when the information about the object is received, and overlay the AR graphic object on the forward view image based on the time difference, wherein the time difference is the sum of time taken to generate information about the object and the time taken to transfer the information about the object to the interface unit.