Dance to the Beat : Enhancing Dancing Performance in Video

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In this paper we introduce a video postprocessing method that enhances the rhythm of a dancing performance, in the sense that the dancing movements are more cohesive with the beat of the music. The dancing performance as observed in a video is analyzed and segmented into motion intervals delimited by motion-beats. We present an image-space method to extract the motion-beats of a video by detecting frames at which there is a significant change in direction or motion stops. The motion-beats are then synchronized with the music-beats such that as many beats as possible are matched with as little as possible time-warping distortion to the video. We show two applications for this cross-media synchronization; one where a given dance performance is enhanced to be better synchronized with its original music, and one where a given dance video is automatically adapted to be synchronized with different music.

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DOI: 10.1007/s41095-018-0115-y

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