Temporal surface frame anomalies for deepfake video detection

Looking at a video sequence where a foreground person is represented is not as time ago anymore. Deepfakes have revolutionized our way to watch at such contents and nowadays we are more often used to wonder if what we are seeing is real or is just a mystification. In this context of generalized disinformation, the need for reliable solutions to help common users, and not only, to make an assessment on this kind of video sequences is strongly upcoming. In this paper, a novel approach which leverages on temporal surface frame anomalies in order to reveal deepfake videos is introduced. The method searches for possible discrepancies, induced by deepfake manipulation, in the surfaces belonging to the captured scene and in their evolution along the temporal axis. These features are used as input of a pipeline based on deep neural networks to perform a binary assessment on the video itself. Experimental results witness that such a methodology can achieve significant performance in terms of detection accuracy.