Impulse Noise Reduction: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
{{1:1}} | {{1:1}} | ||
Suppresses | Suppresses salt-and-pepper noise - sudden white and black pixels which remind one of salt and pepper sprinkled over a photo. This is done after demosaicing. | ||
Salt-and-pepper noise may look similar to hot or dead pixels, but they occur for a very different reason and should be handled using the [[Preprocessing#Hot.2FDead_Pixel_Filter|Hot/Dead Pixel Filter]], which works before demosaicing. | |||
The slider adjusts the threshold which must be exceeded for the suppression to be applied. | |||
Revision as of 19:05, 12 June 2018
The effects of this tool are only visible at a preview scale of 1:1 or more. Use a detail window (click on the 
icon under the main preview panel) to inspect a part of the image, or zoom the main preview to 100% (also called 1:1) 
.
Suppresses salt-and-pepper noise - sudden white and black pixels which remind one of salt and pepper sprinkled over a photo. This is done after demosaicing.
Salt-and-pepper noise may look similar to hot or dead pixels, but they occur for a very different reason and should be handled using the Hot/Dead Pixel Filter, which works before demosaicing.
The slider adjusts the threshold which must be exceeded for the suppression to be applied.