1. A method of correcting a gaze of a user in an image, the method comprising: setting first eye outer points that define a first eye region including an iris and sclera of an eye bounded by eyelids of the user in an original image; transforming the first eye outer points to second eye outer points corresponding to a predetermined reference camera gaze direction; and transforming the first eye region of the original image based on the second eye outer points, wherein transforming the first eye region of the original image comprises: transforming the first eye region inside of the first eye outer points to a second eye region inside of the second eye outer points.