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29-Jun-2016 20:27

Periodicity Detection (Motion Analysis)“It seems reasonable to assume that sex scenes in video can be characterized by a periodic motion pattern,” observe Jansohn and colleagues.“Figure 1: Periodicity detection (PERWIN): a video scene with its mean motion signal in x-direction (top) and the classifier score (bottom).

Indeed, a 2009 paper from a handful of researchers in Germany, , outlines the most popular ways to automatically detect inappropriate content, many of which are mature technologies that have been around for years.- and then the system evaluates the frequency with which these visual words show up.Apparently, when you plot the frequency of visual words, they cluster distinctively in pornographic material.