FourierCrossCorrImg

DESCRIPTION

Computes the cross correlation of two images in the frequency domain by multiplying the first input times the conjugate of the second and dividing throughout by the DC component of the first input. The inputs must be frequency domain images in the packed format produced by the ForwardFFTImg module (see format description in ForwardFFTImg documentation). The Fourier transformation and the cross correlation are discussed in:

Digital Image Processing, Gonzales, R.C., Wintz, P., Addison Wesley, Second Edition, 1987, pp 61--137.

INPUTS

Port: First Img In
Type: Lattice
Constraints: 1..3-D
First frequency domain image.

Port: Second Img In
Type: Lattice
Constraints: 1..3-D
Second frequency domain image.

WIDGETS

OUTPUTS

Port: Img Out
Type: Lattice
Constraints: 1..3-D
Cross correlation in frequency domain.

KNOWN PROBLEMS

SEE ALSO

ForwardFFTImg, InverseFFTImg.
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© The Numerical Algorithms Group Ltd, Oxford UK. 2000