2D cross-correlation using Fortran.

This function calculates the 2D cross-correlation of two matrices `a` and `b` using compiled Fortran subroutine.

Usage

xcorr2D_f(a, b)

Arguments

a

A matrix (2D array) of values.

b

A matrix (2D array) of values.

Value

A matrix representing the 2D cross-correlation of the input matrices.

Author

Ahmed Homoudi

Examples

a <- matrix(c(1, 2, 3, 4), ncol = 2)
b <- matrix(c(5, 6, 7, 8), ncol = 2)
xcorr2D_f(a, b)
#>      [,1] [,2] [,3]
#> [1,]    8   30   18
#> [2,]   23   70   39
#> [3,]   14   38   20