(a) ¶(a, b) ¶(…, scale) ¶Compute the 2D cross-correlation of matrices a and b.
If b is not specified, computes autocorrelation of a, i.e.,
same as xcorr (a, a).
The optional argument scale, defines the type of scaling applied to the cross-correlation matrix. Possible values are:
No scaling.
Scales the raw cross-correlation by the maximum number of elements of a and b involved in the generation of any element of c.
Scales the raw correlation by dividing each element in the cross-correlation matrix by the number of products a and b used to generate that element.
Scales the normalized cross-correlation on the range of [0 1] so that a value of 1 corresponds to a correlation coefficient of 1.
See also: conv2, corr2, xcorr.
Package: signal