From 3225bc37a361c1c02effebf4c981c837d8468a70 Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefasab@gmail.com>
Date: Sun, 11 Mar 2012 03:05:42 +0100
Subject: lavfi: add bbox filter

Also add bbox.h and bbox.c files, based on the remove-logo filter by
Robert Edele. These files are useful for sharing code with the pending
removelogo port.
---
 doc/filters.texi | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'doc')

diff --git a/doc/filters.texi b/doc/filters.texi
index 063cc13605..dc3e5c09fb 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -761,6 +761,16 @@ video, use the command:
 ass=sub.ass
 @end example
 
+@section bbox
+
+Compute the bounding box for the non-black pixels in the input frame
+luminance plane.
+
+This filter computes the bounding box containing all the pixels with a
+luminance value greater than the minimum allowed value.
+The parameters describing the bounding box are printed on the filter
+log.
+
 @section blackdetect
 
 Detect video intervals that are (almost) completely black. Can be
-- 
cgit v1.2.3