Visual liveness detection

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United States of America Patent

PATENT NO 9626575
SERIAL NO

14821258

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Abstract

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In an approach for visual liveness detection, a video-audio signal related to a speaker speaking a text is obtained. The video-audio signal is split into a video signal which records images of the speaker and an audio signal which records a speech spoken by the speaker. Then a first sequence indicating visual mouth openness is obtained from the video signal, and a second sequence indicating acoustic mouth openness is obtained based on the text and the audio signal. Synchrony between the first and second sequences is measured, and the liveness of the speaker is determined based on the synchrony.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Min Beijing, CN 711 7105
Liu, Wen Beijing, CN 137 1389
Qin, Yong Beijing, CN 84 1172
Su, Zhong Beijing, CN 165 2000
Zhang, Shi Lei Beijing, CN 54 709
Zhao, Shiwan Beijing, CN 76 340

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