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MIPS
2.0 - Medical/Microscopy Image Processing Software
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SPECTRUM VIEW
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Discrete
Fourier Transform
/ Spectrum
In this window we can perform image conversion to spectral domain, spectral filtering and back transformation. Since the Fast Fourier Transform algorithm is one of the most
time consuming operations implemented in MIPS 2.0, the Progress Bar was used as a graphical indicator of the operation's progress.
When moving the mouse over the window with the centred spectrum, it is possible to observe the values of the Fourier transform coefficients in the bottom bar. Their form can be set in Options. The Scale
value changes the dynamic range of the brightness of the points representing the Fourier transform coefficients.
In addition to displaying the coefficients when moving the mouse cursor on the bottom bar, you can also use a special window to display them. After entering the coordinates, the real and imaginary components, absolute value and phase are displayed.
Window Save coefficents allows you to save the values of the selected coefficients in an ASCI file so that the results of the Fourier transform can be analyzed later. Preview
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Spectrum view
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DFT settings
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Window for coefficients view
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Saving of selected coefficients to the file
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Examples
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Image spectrum
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Backward-transformed image - normal mode
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Backward-transformed image - constant amplitude |
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Backward-transformed image - constant phase |
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