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