Using RFT, we distinguished angular features that cannot be resolved with either OrientationJ, Skeletonize or AFT. Figure shows a synthetic image of two overlapping sinusoidal patterns obtained by 25° and 50° rotated waveforms. With AFT, OrientationJ, and Skeletonize we calculated individual angles that depend on the chosen window size and relative overlap of sampling windows. The angles were binned to generate histograms (Fig. ). RFT calculates an intensity for each angle, as shown in the plotted curve (Fig. ). OrientationJ and AFT both find only a single angle, preferring the 50° orientation angle. Skeletonize does find some 25° angles but at a lower intensity compared to 50°.