1. An image processing method comprising: (A) converting left-eye image data into left-eye edge data, and right-eye image data into right-eye edge data; (B) extracting left-eye coordinates corresponding to a text area of a left-eye image and right-eye coordinates corresponding to the text area of a right-eye image by analyzing the left-edge data and right-edge data respectively; (C) generating by an image processor, for each left-eye coordinate, left-eye conversion data by converting the left-eye image data corresponding to the left-eye coordinate into an average of the left-eye image data corresponding to the left-eye coordinate and another left-eye image data adjacent to the left-eye image data corresponding to the left-eye coordinate, and generating by the image processor, for each right-eye coordinate, right-eye conversion data by converting the right-eye image data corresponding to the right-eye coordinate into an average of the right-eye image data corresponding to the right-eye coordinate and another right-eye image data adjacent to the right-eye image data corresponding to the right-eye coordinate; (D) generating three dimensional (3D) image data by converting the left-eye conversion data and the right-eye conversion data according to a 3D format method; and (E) displaying a 3D image corresponding to the 3D image data on a display device.