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diff --git a/doc/filters.texi b/doc/filters.texi index b405cc5dfb..03ca9ae7f0 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -12957,6 +12957,44 @@ greyedge=difford=1:minknorm=0:sigma=2 @end itemize +@section guided filter +Apply guided filter for edge-preserving smoothing, dehazing and so on. + +The filter accepts the following options: +@table @option +@item radius +Set the radius in pixels. +Allowed range is 1 to 20. Default is 3. + +@item eps +Set regularization parameter. +Allowed range is 0 to 1. Default is 0.1. + +@item planes +Set planes to filter. Default is first only. +@end table + +@subsection Commands +This filter supports the all above options as @ref{commands}. + +@subsection Examples +@itemize +@item +Edge-preserving smoothing with guided filter: +@example +ffmpeg -i in.png -i in.png -filter_complex guided out.png +@end example + +@item +Dehazing, structure-transferring filtering, detail enhancement with guided filter. +For the generation of guidance image, +see @url{http://kaiminghe.com/publications/pami12guidedfilter.pdf}. +@example +ffmpeg -i in.png -i guidance.png -filter_complex guided out.png +@end example + +@end itemize + @anchor{haldclut} @section haldclut |