Signal Processing Toolbox |

Estimate the two-dimensional cross-correlation

**Syntax**

**Description**

returns the cross-correlation of matrices ```
C = xcorr2(A,B)
```

`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.

is the autocorrelation matrix of input matrix ```
xcorr2(A)
```

`A`

. It is identical to `xcorr2(A,A)`

.

**See Also**

xcorr | xcov |