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-rw-r--r--doc/filters.texi4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi
index d16a8b8..fb1dd8f 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -11442,8 +11442,12 @@ Available values are:
Use values from the nearest defined point.
@item linear
Interpolate values using the linear interpolation.
+@item cosine
+Interpolate values using the cosine interpolation.
@item cubic
Interpolate values using the cubic interpolation.
+@item spline
+Interpolate values using the spline interpolation.
@end table
@end table
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