Update: 08 January 2010
The Inverse Discrete Fourier Transform (I-DFT) translates two frequency-domain images into one spatial-domain image. Mathematically speaking, this a complex transformation. Both input images are either the real and the imaginary parts, or the modulus and the argument of a DFT. All other image couples will produce an unpredictable - and likely false - result.
Hence, both input images shall :
For more information on the DFT_ORD and the DFT_TYPE
keywords, refer to the Discrete Fourier Transform
command.
The result of the I-DFT processing will be displayed and saved in the
current image directory as "image.fit".
If there were a file with the
very same name, its content will be overridden.
The output image
is encoded with unsigned 16-bits words.