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Detecting violence on movie excerpts - A machine-learning approach based on audio and video features

Dias, LD ; Brandão, T. ; Batista, M.

Detecting violence on movie excerpts - A machine-learning approach based on audio and video features, Proc Inforum - Simpósio de Informática, Lisbon, Portugal, Vol. --, pp. -- - --, September, 2016.

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Abstract
Violence in movies and its relation to children’s behavior has been a subject of many social studies, especially in today’s world where parents have less control on the multimedia contents accessed by their children. This paper presents a study on the automatic detection of violence on movie excerpts using machine-learning algorithms. The proposed approach explores audio and visual features extracted from the movie excerpts combined with the widely used machine learning classifiers – Support Vector Machine (SVM) and Neural Network – in order to detect the presence of violence in a movie excerpt. The impact of using audio and visual features, independently or combined, is analyzed. After experimenting different combinations of audio and video features, interesting conclusions have been drawn: the use of audio features seems to be imperative in this task and, from the video signal, the most representative features seem to be the ones related to motion.