VISILAB at MediaEval 2013: Fight Detection.
Ismael Serrano, Óscar Déniz, Gloria Bueno · 2013
Fight detection from video is a task with direct application in surveillance scenarios like prison cells, yards, mental institutions, etc. Work in this task is growing, although only a few datasets for fight detection currently exist. The Violent Scene Detection task of the MediaEval initiative offers a practical challenge for detecting violent video clips in movies. In this working notes paper we will briefly describe our method for fight detection. This method has been used to detect fights within the above-mentioned violent scene detection task. Inspired by results that suggest that kinematic features alone are discriminative for at least some actions, our method uses extreme acceleration patterns as the main feature. These extreme accelerations are efficiently estimated by applying the Radon transform to the power spectrum of consecutive frames.