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author | Paul B Mahol <onemda@gmail.com> | 2015-07-04 23:19:05 +0300 |
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committer | Paul B Mahol <onemda@gmail.com> | 2015-07-08 19:02:34 +0300 |
commit | 91748662bc024294d50e2e0542d727265e331105 (patch) | |
tree | 0f0168bb085b8007f85bc812e05dd9a3185cdd3d /doc/filters.texi | |
parent | 3c63d06d81e7b4ff8f37c0a3cc344d6a80f72928 (diff) |
avfilter: add removegrain
Signed-off-by: Paul B Mahol <onemda@gmail.com>
Diffstat (limited to 'doc/filters.texi')
-rw-r--r-- | doc/filters.texi | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 7cd0635411..3fce874f5f 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -8005,6 +8005,110 @@ qp=2+2*sin(PI*qp) @end example @end itemize +@section removegrain + +The removegrain filter is a spatial denoiser for progressive video. + +@table @option +@item m0 +Set mode for the first plane. + +@item m1 +Set mode for the second plane. + +@item m2 +Set mode for the third plane. + +@item m3 +Set mode for the fourth plane. +@end table + +Range of mode is from 0 to 24. Description of each mode follows: + +@table @var +@item 0 +Leave input plane unchanged. Default. + +@item 1 +Clips the pixel with the minimum and maximum of the 8 neighbour pixels. + +@item 2 +Clips the pixel with the second minimum and maximum of the 8 neighbour pixels. + +@item 3 +Clips the pixel with the third minimum and maximum of the 8 neighbour pixels. + +@item 4 +Clips the pixel with the fourth minimum and maximum of the 8 neighbour pixels. +This is equivalent to a median filter. + +@item 5 +Line-sensitive clipping giving the minimal change. + +@item 6 +Line-sensitive clipping, intermediate. + +@item 7 +Line-sensitive clipping, intermediate. + +@item 8 +Line-sensitive clipping, intermediate. + +@item 9 +Line-sensitive clipping on a line where the neighbours pixels are the closest. + +@item 10 +Replaces the target pixel with the closest neighbour. + +@item 11 +[1 2 1] horizontal and vertical kernel blur. + +@item 12 +Same as mode 11. + +@item 13 +Bob mode, interpolates top field from the line where the neighbours +pixels are the closest. + +@item 14 +Bob mode, interpolates bottom field from the line where the neighbours +pixels are the closest. + +@item 15 +Bob mode, interpolates top field. Same as 13 but with a more complicated +interpolation formula. + +@item 16 +Bob mode, interpolates bottom field. Same as 14 but with a more complicated +interpolation formula. + +@item 17 +Clips the pixel with the minimum and maximum of respectively the maximum and +minimum of each pair of opposite neighbour pixels. + +@item 18 +Line-sensitive clipping using opposite neighbours whose greatest distance from +the current pixel is minimal. + +@item 19 +Replaces the pixel with the average of its 8 neighbours. + +@item 20 +Averages the 9 pixels ([1 1 1] horizontal and vertical blur). + +@item 21 +Clips pixels using the averages of opposite neighbour. + +@item 22 +Same as mode 21 but simpler and faster. + +@item 23 +Small edge and halo removal, but reputed useless. + +@item 24 +Similar as 23. +@end table + @section removelogo Suppress a TV station logo, using an image file to determine which |