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Automatic Time Skew Detection and Correction

By Danil Korchagin


Abstract—In this paper, we propose a new approach for the automatic time skew detection and correction for multisource audiovisual data, recorded by different cameras/recorders during the same event. All recorded data are successfully tested for potential time skew problem and corrected based on ASR-related features. The core of the algorithm is based on perceptual time-quefrency analysis with a precision of 10 ms. The results show correct time skew detection and elimination in 100 % of cases for a real life dataset of 32 broken sessions and surpass the performance of fast cross correlation while keeping lower system requirements. Keywords-time-quefrency analysis; time synchronisation; pattern matchin

Year: 2011
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