| Abstract
|
<p>A technique evaluating liveness i … <p>A technique evaluating liveness in face image sequences is presented. To ensure the actual presence of a live face in contrast to a photograph (playback attack), is a significant problem in face authentication to the extent that anti-spoofing measures are highly desirable. The purpose of the proposed system is to assist in a biometric authentication framework, by adding liveness awareness in a non-intrusive manner. Analyzing the trajectories of certain parts of a live face reveals valuable information to discriminate it against a spoofed one. The proposed system uses a lightweight novel optical flow, which is especially applicable in face motion estimation based on the structure tensor and inputs of a few frames. For reliable face part detection, the system utilizes a model-based local Gabor decomposition and SVM experts, where selected points from a retinotopic grid are used to form regional face models. Also the estimated optical flow is exploited to detect a face part. The whole procedure, starting with three images as input and finishing in a liveness score, is executed in near real-time without special purpose hardware. Experimental results on the proposed system are presented on both a public database and spoofing attack simulations.</p>and spoofing attack simulations.</p>
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| Author
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Klaus Kollreider +
, Hartwig Fronthaler +
, Josef Bigun +
|
| DOI
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http://dx.doi.org/10.1016/j.imavis.2007.05.004 +
|
| Diva
|
http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:239398
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| EndPage
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244 +
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| Issue
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3 +
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| Journal
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Image and Vision Computing +
|
| PublicationType
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Journal Paper +
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| Publisher
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Elsevier +
|
| StartPage
|
233 +
|
| Title
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Non-intrusive liveness detection by face images +
|
| Volume
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27 +
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| Year
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2009 +
|
| Has queryThis property is a special property in this wiki.
|
Publications:Non-intrusive liveness detection by face images +
, Publications:Non-intrusive liveness detection by face images +
, Publications:Non-intrusive liveness detection by face images +
, Publications:Non-intrusive liveness detection by face images +
, Publications:Non-intrusive liveness detection by face images +
, Publications:Non-intrusive liveness detection by face images +
, Publications:Non-intrusive liveness detection by face images +
, Publications:Non-intrusive liveness detection by face images +
, Publications:Non-intrusive liveness detection by face images +
, Publications:Non-intrusive liveness detection by face images +
|
| Categories |
Publication +
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| Modification dateThis property is a special property in this wiki.
|
30 September 2016 20:39:07 +
|
