Sökning: "Biometric recognition"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Biometric recognition.

  1. 1. Lip-motion biometrics for audio-visual identity recognition

    Detta är en avhandling från Göteborg : Chalmers university of technology

    Författare :Maycel Isaac Faraj; Högskolan i Halmstad.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Information technology Image analysis; TEKNIKVETENSKAP Informationsteknik Bildanalys; Biometrics; Lip motion; Audio-visual signals; Speech recognition; Speaker recognition; Digit recognition;

    Sammanfattning : Biometric recognition systems have been established as powerful security tools to prevent unknown users from entering high risk systems and areas. They are increasingly being utilized in surveillance and access management (city centers, banks, etc.) by using individuals' physical or biological characteristics. LÄS MER

  2. 2. Lip-motion and speech biometrics in person recognition

    Detta är en avhandling från Göteborg : Department of Signals and Systems, Chalmers University of Technology

    Författare :Maycel Isaac Faraj; Högskolan i Halmstad.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TECHNOLOGY Information technology Image analysis; TEKNIKVETENSKAP Informationsteknik Bildanalys; Audio-visual recognition; biometrics; Biometric recognition; Speaker verification; Speaker authentication; Person identification; Lip movements; Motion; Structure tensor; Orientation; Optical flow; Hidden Markov Model; Gaussian Markov Model; Lip-motion;

    Sammanfattning : Biometric identification techniques are frequently used to improve security, e.g. in financial transactions, computer networks and secure critical locations. The purpose of biometric authentication systems is to verify an individual by her biological characteristics including those generating characterisitic behaviour. LÄS MER

  3. 3. Improving fingerprint biometrics by local symmetry and fusion

    Detta är en avhandling från Göteborg : Department of Signals and Systems, Chalmers University of Technology

    Författare :Hartwig Fronthaler; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Alignment; Matching; Minutiae Extraction; Image Restoration; Multi-expert Fusion; Biometrics; Symmetry Features; Structure Tensor; Quality Assessment; Fingerprint Recognition; Image Pyramid; Enhancement; Rotational Symmetry; Cascaded Fusion; Monomodal Fusion; Fingerprint;

    Sammanfattning : Fingerprint recognition and biometrics in general have been significantly gaining attention within the last years, not least due to the biometric passport that has been introduced all over Europe and the American immigration management system US-VISIT. The tasks of fingerprint recognition can be broken down to smaller entities, i.e. LÄS MER

  4. 4. Audio-video synthesis methods for improving performance of biometric systems

    Detta är en avhandling från Gothenburg : Department of Signals and Systems, Chalmers University of Technology

    Författare :Dereje Teferi Lemma; Teferi Dereje; Högskolan i Halmstad.; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY; TEKNIKVETENSKAP; Biometrics; Audio-Video synthesis; Image segmentation; XM2VTS; DXM2VTS;

    Sammanfattning : System security is important for any automation. It is even more so in the case of biometric systems due to the sensitive nature of the data it uses for enrollment and authentication - the subjects physical or biological trait. LÄS MER

  5. 5. Recognition and Evaluation by Video Synthesis Methods and Symmetry Features

    Detta är en avhandling från Gothenburg : Department of Signals and Systems, Chalmers University of Technology

    Författare :Dereje Teferi Lemma; [2009]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Biometrics; eye detection; video synthesis; liveness detection; camera calibration; damascening; Generalized Structure Tensor; symmetry codes;

    Sammanfattning : Biometrics is being increasingly utilized for person authentication. It requires little or no efforts from the user as compared to traditional non-biometric systems where the user has to memorize PIN codes and passwords or carry pass cards and keys that can be easily forgotten or lost. LÄS MER