xcorr2

Signal Processing Toolbox

Two-dimensional cross-correlation.

C = xcorr2(A)
C = xcorr2(A,B)

Description

C = xcorr2(A,B)

returns the cross-correlation of matrices A and B with no scaling. xcorr2 is the two-dimensional version of xcorr. It has its maximum value when the two matrices are aligned so that they are shaped as similarly as possible.

xcorr2(A)

is the autocorrelation matrix of input matrix A. It is identical to xcorr2(A,A).

See Also


`conv2`	Two-dimensional convolution.
`filter2`	Two-dimensional digital filtering.
`xcorr`	Cross-correlation function estimate.

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