Difference between revisions of "File:Fafo2test0.gif"
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| + | Test function used for the demonstration of filtering of images with the [[Fourier transform]]. |
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| − | Importing image file |
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| + | The function is defined as zero everywhere except the interior of ellipsis in vicinity of the origin of coordinates. This center is marked with the red cross. |
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| + | Values inside the ellipsis are set to unity, but the additional 3 rectangles with zero values are added. |
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| + | The lightness of the gray level is proportional to the amplitude of the function, |
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| + | [[Category:Draft]] |
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| + | [[Category:Fourier transform]] |
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Latest revision as of 10:32, 21 June 2013
Test function used for the demonstration of filtering of images with the Fourier transform.
The function is defined as zero everywhere except the interior of ellipsis in vicinity of the origin of coordinates. This center is marked with the red cross.
Values inside the ellipsis are set to unity, but the additional 3 rectangles with zero values are added.
The lightness of the gray level is proportional to the amplitude of the function,
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:50, 20 June 2013 |  | 642 × 642 (4 KB) | Maintenance script (talk | contribs) | Importing image file |
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