1. A method for displaying image elements, composed of computer-generated pixels and reflected on a non-planar reflective surface, for a substantially distortion-free display the method comprising the acts of: calculating pre-distorted image data by a computer unit in an operating phase, based on distortion characteristics of the reflected surface, from original image data of the image elements in accordance with pre-distortion parameters related to a display; transferring the pre-distorted image data to a display device, and projecting image elements onto the reflective surface; in order to obtain the pre-distortion parameters related to the display device, in a calibration phase recording at least two image data records captured from at least one of different camera positions and camera angles, the recorded at least two image data records resulting from a projection of at least one image element that is pre-distorted and projected in a form of original image data using a same procedure as in an operating phase, wherein the recorded at least two image data sets is compared with the original image data.