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Diffstat (limited to 'doc/filters.texi')
| -rw-r--r-- | doc/filters.texi | 35 |
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diff --git a/doc/filters.texi b/doc/filters.texi index 070e57d40f..7aa541f42b 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -9695,6 +9695,41 @@ Negate input video. It accepts an integer in input; if non-zero it negates the alpha component (if available). The default value in input is 0. +@section nlmeans + +Denoise frames using Non-Local Means algorithm. + +Each pixel is adjusted by looking for other pixels with similar contexts. This +context similarity is defined by comparing their surrounding patches of size +@option{p}x@option{p}. Patches are searched in an area of @option{r}x@option{r} +around the pixel. + +Note that the research area defines centers for patches, which means some +patches will be made of pixels outside that research area. + +The filter accepts the following options. + +@table @option +@item s +Set denoising strength. + +@item p +Set patch size. + +@item pc +Same as @option{p} but for chroma planes. + +The default value is @var{0} and means automatic. + +@item r +Set research size. + +@item rc +Same as @option{r} but for chroma planes. + +The default value is @var{0} and means automatic. +@end table + @section nnedi Deinterlace video using neural network edge directed interpolation. |