Raises the coefficients of a frequency domain image by a Power in the
log domain. The operation is equivalent to taking the logarithm of the
magnitude of the input image, raising that value to a power,
exponentiating the result, and writing the result back into the packed
complex form. This operation is useful for image sharpening. The input
must be a frequency domain image 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.
Port: Img In
Source frequency domain image.
Constant exponent value.
Port: Img Out
Powered frequency domain image.
© The Numerical Algorithms Group Ltd, Oxford UK. 2000