File:160 by 160 thumbnail of 'Green Sea Shell' - 1. fourier filtered for downsampling to 40 x 40.png
Jump to navigation
Jump to search
No higher resolution available.
160_by_160_thumbnail_of_'Green_Sea_Shell'_-_1._fourier_filtered_for_downsampling_to_40_x_40.png (162 × 162 pixels, file size: 19 KB, MIME type: image/png)
Captions
Captions
Add a one-line explanation of what this file represents
Summary[edit]
| Description |
English: 160_by_160_thumbnail_of_'Green_Sea_Shell' -> fourier filtered for downsampling to 40 x 40
matlab Code: filt=zeros(160,160); filt(1:20,1:20)=1; filt(end-19:end,1:20)=1; filt(1:20,end-19:end)=1; filt(end-19:end,end-19:end)=1; x160_f(:,:,1)=ifft2(fft2(double(x160(:,:,1))).*filt); x160_f(:,:,2)=ifft2(fft2(double(x160(:,:,2))).*filt); x160_f(:,:,3)=ifft2(fft2(double(x160(:,:,3))).*filt); figure; imagesc(uint8(real((x160_f))))) % clipping/saturating to 0...255 by uint8 |
| Date | |
| Source | File:160_by_160_thumbnail_of_'Green_Sea_Shell'.png |
| Author | James Petts / shaddim |
Licensing[edit]
This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:58, 21 May 2022 | | 162 × 162 (19 KB) | Phreneticc (talk | contribs) | Reduced "weight" of the file. |
| 11:33, 3 April 2016 |  | 162 × 162 (70 KB) | Shaddim (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on ca.wikipedia.org
- Usage on en.wikipedia.org
- Usage on et.wikipedia.org
- Usage on ja.wikipedia.org
- Usage on uk.wikipedia.org
