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Search: L773:9783540745488

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  • Faraj, Maycel Isaac, 1979-, et al. (author)
  • Speaker and Digit Recognition by Audio-Visual Lip Biometrics
  • 2007
  • In: Advances in biometrics. - Berlin : Springer. - 9783540745488 ; , s. 1016-1024
  • Conference paper (pop. science, debate, etc.)abstract
    • This paper proposes a new robust bi-modal audio visual digit and speaker recognition system by lip-motion and speech biometrics. To increase the robustness of digit and speaker recognition, we have proposed a method using speaker lip motion information extracted from video sequences with low resolution (128 ×128 pixels). In this paper we investigate a biometric system for digit recognition and speaker identification based using line-motion estimation with speech information and Support Vector Machines. The acoustic and visual features are fused at the feature level showing favourable results with digit recognition being 83% to 100% and speaker recognition 100% on the XM2VTS database.
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2.
  • Teferi, Dereje, et al. (author)
  • Pyramid Based Interpolation for Face-Video Playback in Audio Visual Recognition
  • 2007
  • In: Advances in Biometrics. - Berlin : Springer Berlin/Heidelberg. - 9783540745488 ; , s. 868-877
  • Conference paper (peer-reviewed)abstract
    • Biometric systems, such as face tracking and recognition, are increasingly being used as a means of security in many areas. The usability of these systems depend not only on how accurate they are in terms of detection and recognition but also on how well they withstand attacks. In this paper we developed a text-driven face-video signal from the XM2VTS database. The synthesized video can be used as a means of playback attack for face detection and recognition systems. We use Hidden Markov Model to recognize the speech of a person and use the transcription file for reshuffling the image sequences as per the prompted text. The discontinuities in the new video are significantly minimized by using a pyramid based multi-resolution frame interpolation technique. The playback can also be used to test liveness detection systems that rely on lip-motion to speech synchronization and motion of the head while posing/speaking. Finally we suggest possible approaches to enable biometric systems to stand against this kind of attacks. Other uses of our results include web-based video communication for electronic commerce.
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  • Result 1-2 of 2
Type of publication
conference paper (2)
Type of content
pop. science, debate, etc. (1)
peer-reviewed (1)
Author/Editor
Bigun, Josef, 1961- (1)
Bigun, Josef (1)
Teferi, Dereje (1)
Faraj, Maycel Isaac, ... (1)
University
Halmstad University (2)
Language
English (2)
Research subject (UKÄ/SCB)
Engineering and Technology (2)
Year
2007 (2)

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