Original file (5,850 × 3,615 pixels, file size: 1.75 MB, MIME type: image/jpeg)
Summary edit
| Description |
The Golden Laplacian Pyramid. To represent the edges of the image at different levels, we may use a simple recursive approach constructing progressively a set of images of decreasing sizes, from a base to the summit of a pyramid. Using simple down-scaling and up-scaling operators we may approximate well a Laplacian operator. This is represented here by stacking images on a Golden Rectangle, that is where the aspect ratio is the golden section $\phi \eqdef \frac{1+\sqrt{5}}{2}$. We present here the base image on the left and the successive levels of the pyramid in a clockwise fashion (for clarity, we stopped at level $8$). Note that here we also use $\phi^2$ (that is $\phi+1$) as the down-scaling factor so that the resolution of the pyramid images correspond across scales. Note at last that coefficient are very kurtotic: most are near zero, the distribution of coefficients has long tails. | ||
|---|---|---|---|
| Source |
reproducible at https://github.com/bicv/LogGabor/blob/master/LogGabor.ipynb | ||
| Date | |||
| Author |
| ||
| Permission (Reusing this file) |
See below.
|
Licensing edit
   | This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 License. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:53, 5 October 2017 | | 5,850 × 3,615 (1.75 MB) | LaurentPerrinet (talk | contribs) | The Golden Laplacian Pyramid. To represent the edges of the image at different levels, we may use a simple recursive approach constructing progressively a set of images of decreasing sizes, from a base to the summit of a pyramid. Using simple down-scal... |
You cannot overwrite this file.
