ISIS Application Documentation
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Apply an Inverse Fourier Transform on a magnitude/phase pair of cubes
| Overview | Parameters | Example 1 |
DescriptionThis program accepts two cubes, most likely acquired from the fft program, containing the magnitude and phase angle data of a Fourier transformed image and returns the inverse. The output cube will contain an AlphaCube group if the input cube to the fft program contained one. For exmaple, if a cube was cropped and then run through the fft program, the output cube from this program will contain the original AlphaCube group. CategoriesRelated Objects and DocumentsApplicationsHistory
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| U.S. Department of the Interior | U.S. Geological Survey ISIS | Privacy & Disclaimers | Astrogeology Research Program To contact us, please post comments and questions on the USGS Astrogeology Discussion Board To report a bug, or suggest a feature go to: ISIS Github File Modified: 02/21/2025 19:28:11 |
Parameter GroupsFiles
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| U.S. Department of the Interior | U.S. Geological Survey ISIS | Privacy & Disclaimers | Astrogeology Research Program To contact us, please post comments and questions on the USGS Astrogeology Discussion Board To report a bug, or suggest a feature go to: ISIS Github File Modified: 02/21/2025 19:28:11 |
Files: MAGNITUDE
Description
The input cube containing the image magnitude data.
| Type | cube |
|---|---|
| File Mode | input |
| Filter | *.cub |
Files: PHASE
Description
The input cube containing the image phase angle data.
| Type | cube |
|---|---|
| File Mode | input |
| Filter | *.cub |
Files: TO
Description
The result of the inverse transform.
| Type | cube |
|---|---|
| File Mode | output |
| Filter | *.cub |
Example 1ifft example Description
Example of the inverse Fourier transform.
Command Line
ifft magnitude=peaks_magnitude.cub phase=peaks_phase.cub to=peaks.cub
Compute the inverse Fourier transform of peaks_magnitude.cub and peaks_phase.cub and store the result in peaks.cub .
GUI Screenshot
Input Images
Output Image
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![ifft GUI](javascript:popUpNewWindow ("assets/image/ifftGui.jpg",512, 512))
![Magnitude image](javascript:popUpNewWindow ("assets/image/ifftMag.jpg",512, 512))
![Phase image](javascript:popUpNewWindow ("assets/image/ifftPhase.jpg",512, 512))
![Output image](javascript:popUpNewWindow ("assets/image/peaks.jpg",512, 512))
| U.S. Department of the Interior | U.S. Geological Survey ISIS | Privacy & Disclaimers | Astrogeology Research Program To contact us, please post comments and questions on the USGS Astrogeology Discussion Board To report a bug, or suggest a feature go to: ISIS Github File Modified: 02/21/2025 19:28:11 |