Human Eye Movements Reveal Video Frame Importance.

Human eye movements indicate important spatial information in static images as well as videos. Yet videos contain additional temporal information and convey a storyline. Video summarization is a technique that reduces video size, but maintains the essence of the storyline. Here, the authors explore whether eye movement patterns reflect frame importance during video viewing and facilitate video summarization. Eye movements were recorded while subjects watched videos from the SumMe video summarization dataset. The authors find more gaze consistency for selected than unselected frames. They further introduce a novel multi-stream deep learning model for video summarization that incorporates subjects' eye movement information. Gaze data improved the model's performance over that observed when only the frames' physical attributes were used. The results suggest that eye movement patterns reflect cognitive processing of sequential information that helps select important video frames, and provide an innovative algorithm that uses gaze information in video summarization.