A method for correcting a gaze direction of a user in an image, the method comprising the steps of: detecting a face of the user in the image; detecting a gaze direction of the face of the user as an angle of the face estimated by using the detected face, eyes and nose; detecting contour points of a contour of an eye area in the detected face; changing the contour points of the detected eye area in the image to contour points that correspond to a gaze direction toward a reference camera; and correcting the gaze direction of the user in the image by transforming the eye area according to the changed contour points, wherein detecting the contour points of the contour 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 each contour point of a previously-set eye model from center coordinates of the eye area, as a contour point of the eye area; wherein transforming the eye area comprises performing texture mapping on the eye area by using a forward warping technology or a backward warping technology; and wherein the texture mapping is performed within an oval mask including the changed contour points of the eye area; and wherein the method further comprises the step of correcting the gaze direction if a distance between both detected eyes in the image is less than or equal to a previously-set threshold depending on the size of the face; or, if the distance between the detected eyes in the image is greater than the previously-set threshold depending on the size of the face, correcting the gaze direction until the detection of the face, eyes and nose fails. detecting a face of the user in the image; detecting a gaze direction of the face of the user as an angle of the face estimated by using the detected face, eyes and nose; detecting contour points of a contour of an eye area in the detected face; changing the contour points of the detected eye area in the image to contour points that correspond to a gaze direction toward a reference camera; and correcting the gaze direction of the user in the image by transforming the eye area according to the changed contour points, wherein detecting the contour points of the contour 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 each contour point of a previously-set eye model from center coordinates of the eye area, as a contour point of the eye area; wherein transforming the eye area comprises performing texture mapping on the eye area by using a forward warping technology or a backward warping technology; and wherein the texture mapping is performed within an oval mask including the changed contour points of the eye area; and wherein the method further comprises the step of correcting the gaze direction if a distance between both detected eyes in the image is less than or equal to a previously-set threshold depending on the size of the face; or, if the distance between the detected eyes in the image is greater than the previously-set threshold depending on the size of the face, correcting the gaze direction until the detection of the face, eyes and nose fails.