1. A method for correcting a gaze direction of a user in an image captured by a camera, the method comprising the steps of: detecting a face of the user in the captured image; detecting contour points of an eye area in the detected face, the eye area being defined by an eye contour connecting the contour points; changing the contour points of the detected eye area in the captured image to contour points corresponding to a gaze direction toward the camera by moving at least some of the detected contour points; and correcting the gaze direction of the user in the captured image by transforming the eye area according to a changed eye contour which connects the changed contour points, wherein detecting the contour points of the eye area in the detected face comprises setting a point having a largest change in a brightness value of a pixel in a direction of a vector passing through a contour point of a previously-set eye model, as a contour point of the eye area.