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the house, when one of them is hit by a can of paint, or when he walks barefoot on
crushed glass and gets hurt. Really funny, but really violent…
Now, with the violent movie content detector plug-in, finding and skipping violent
parts has never been made so easy. Clara just has to turn on the violence detection
plug-in on the Smart TV and quickly browse the movie before letting Ben watch
it. Thanks to the plug-in, she can easily recognize violent parts while watching the
movie and jump to the next nonviolent scene when necessary. Before a violence
detector could offer such possibilities, Smart TV users were provided information
mainly based on the Electronic Program guide (EPG).
In their most common forms, EPG information contains a short description of the
TV program and a parental guidance (PG) rating for the whole program (referring to
the recommended minimal age of the spectator). Unlike an EPG, the plug-in works
by analyzing directly the audio and visual content to discover scenes which a spec-
tator would consider as violent. The advantage is that, instead of discarding a whole
movie based solely on a PG rate, the plug-in can label the movie scene-by-scene or
even shot-by-shot.
At the end of the movie, Clara noticed that the plug-in was really helpful. She
thinks, “Wow, almost all violent scenes were found by that app. The kid did not see
any of those violent scenes.”
Clara checks what time it is: “Only 7? What else am I gonna do with the kid until
the parents are back?” Indeed, Ben is allowed to stay awake until 9 pm on Saturday
evenings. He likes to play games on the tablet—crushing objects, throwing birds away
and many other games—or watch funny clips on Youtube or Dailymotion—videos
sent by his schoolmates via popular social networks. Clara knows that the tablet
belongs to the parents and that they do not have any parental control filter installed
on it. Therefore, she is not very much pleased with the idea of tablet. However,
something suddenly pops in her mind. “Oh yes, that violence detection plug-in on
the TV has an equivalent application for the tablet. I remember that it can also be
downloaded for the tablet from the Internet”, she remembers.
She installs it, sets violent scene detection on, and hands the tablet to Ben. Con-
vinced by the performance of the plug-in on the TV, she is confident that Ben risks
nothing when such a feature is turned on. He can play with it until it is time to go
to bed…
11.1 Introduction
As the amount of available multimedia content becomes more and more abundant,
the use of automatic multimedia analysis solutions in order to find relevant seman-
tic search results or to identify illegal content present on the World Wide Web has
reached a critical importance. In addition, the advances in digital media manage-
ment techniques have facilitated delivering digital videos to consumers. Therefore,
accessing online movies through services such as VOD has become extremely easy.
As a result, parents are not able to constantly and precisely monitor what their
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