A method for the inspection of a, in particular, flat, object comprising - a texture with an imprinted predetermined color gradient, and - a transparent plastic layer with a relief-like course corresponding to the color gradient, which is arranged over the texture, for determining, whether the texture and the plastic layer lie exactly on top of each other, a) wherein the object is illuminated with unpolarized light, which is radiated at the Brewster-angle (θ B), at most with a deviation of maximally 10°, onto the object, b) wherein the object is acquired from the opposite side by means of an acquisition unit, the optical axis of which is at the Brewster angle (θ B), at most with a deviation of maximally +/- 10°, to the surface of the object, and wherein the optical axis of the acquisition unit and direction of radiation of the radiated light lie in a plane, c) wherein with the acquisition unit a first image (B 1) of the object is created, wherein for the image acquisition only light is used with a polarization perpendicular to the plane of incidence, d) wherein with the acquisition unit a second image of the object is created, wherein for the image acquisition only light is used with a polarization parallel to the plane of incidence, e) wherein the two images (B 1, B 2) are compared with each other by correlation and a displacement of the two images (B 1, B 2) to each other is determined on the basis of the result of the correlation, f) wherein the thus determined displacement is compared with a predetermined threshold value and when the threshold value is exceeded by the displacement it is ascertained that the texture and the plastic layer do not lie exactly on top of each other, g) wherein to determine the displacement the cross-correlation function is determined for the two images (B 1, B 2), and h) wherein two maxima independent of each other are searched for in the cross-correlation function, and the distance between the two maxima is determined as the displacement. - a texture with an imprinted predetermined color gradient, and - a transparent plastic layer with a relief-like course corresponding to the color gradient, which is arranged over the texture, a) wherein the object is illuminated with unpolarized light, which is radiated at the Brewster-angle (θ B), at most with a deviation of maximally 10°, onto the object, b) wherein the object is acquired from the opposite side by means of an acquisition unit, the optical axis of which is at the Brewster angle (θ B), at most with a deviation of maximally +/- 10°, to the surface of the object, and wherein the optical axis of the acquisition unit and direction of radiation of the radiated light lie in a plane, c) wherein with the acquisition unit a first image (B 1) of the object is created, wherein for the image acquisition only light is used with a polarization perpendicular to the plane of incidence, d) wherein with the acquisition unit a second image of the object is created, wherein for the image acquisition only light is used with a polarization parallel to the plane of incidence, e) wherein the two images (B 1, B 2) are compared with each other by correlation and a displacement of the two images (B 1, B 2) to each other is determined on the basis of the result of the correlation, f) wherein the thus determined displacement is compared with a predetermined threshold value and when the threshold value is exceeded by the displacement it is ascertained that the texture and the plastic layer do not lie exactly on top of each other, g) wherein to determine the displacement the cross-correlation function is determined for the two images (B 1, B 2), and h) wherein two maxima independent of each other are searched for in the cross-correlation function, and the distance between the two maxima is determined as the displacement.