EVALUATION OF PLANAR FRACTAL IMAGES BY OPTICAL AUTOCORRELATION

Optical autocorrelation of two-dimensional fractal images is discussed . Coherent and incoherent optical autocorrelations, depending upon the illumination mode, are analysed in the specific context of the evalua tion of fractal dimensions. The newly proposed methods are alternative s to the classical diffraction-based approaches and their complementar y character is emphasized. The results of the experiments with two-dim ensional maps of regular and statistical self-similar fractals are als o presented and the abilities of the two methods are comparatively dis cussed.