Face recognition systems require the ability to efficiently scan an existing database of faces to locate a match for a newly acquired face. The large number of faces in real world databases makes computationally intensive algorithms impractical for scanning entire databases. We propose the use of more efficient algorithms to "prescreen" face databases, determining a limited set of likely matches that can be processed further to identify a match. We use both radial symmetry and shape to extract five features of interest on 3D range images of faces. These facial features determine a very small subset of discriminating points which serve as input to a prescreening algorithm based on a Hausdorff fraction. We show how to compute the Haudorff fraction in linear O(n) time using a range image representation. Our feature extraction and prescreening algorithms are verified using the FRGC v1.0 3D face scan data. Results show 97% of the extracted facial features are within 10 mm or less of manually marked ground truth, and the prescreener has a rank 6 recognition rate of 100%.


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    Title :

    A Prescreener for 3D Face Recognition Using Radial Symmetry and the Hausdorff Fraction


    Contributors:
    Koudelka, M.L. (author) / Koch, M.W. (author) / Russ, T.D. (author)


    Publication date :

    2005-01-01


    Size :

    308380 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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