CONF Korchagin_ICSAP_2011/IDIAP Automatic Time Skew Detection and Correction Korchagin, Danil pattern matching time synchronisation time-quefrency analysis EXTERNAL http://publications.idiap.ch/attachments/papers/2010/Korchagin_ICSAP_2011.pdf PUBLIC http://publications.idiap.ch/index.php/publications/showcite/Korchagin_Idiap-RR-42-2010 Related documents Proceedings International Conference on Signal Acquisition and Processing Singapore 2011 Martigny, Switzerland February 2011 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. REPORT Korchagin_Idiap-RR-42-2010/IDIAP Automatic Time Skew Detection and Correction Korchagin, Danil EXTERNAL http://publications.idiap.ch/attachments/reports/2010/Korchagin_Idiap-RR-42-2010.pdf PUBLIC http://publications.idiap.ch/index.php/publications/showcite/Korchagin_ICSAP_2011 Related documents Idiap-RR-42-2010 2010 Idiap Martigny, Switzerland December 2010 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.