In two identical superimposed random dot fields, local autocorrelation between dots is supposed to be at the basis of the appearance of circular Moirè fringes when one field rotates. Now, the autocorrelation function of a dot with the all the other dots generate a delta function, so that the autocorrelation of all the dots of the field generate a cluster of delta functions. Is it correct to assume that the stronger the autocorrelation function in the area of separated pairs of dots, the higher the peak of the corresponding delta functions? Thanks to all.

Carlo