Sökning: "XM2VTS"

Hittade 4 avhandlingar innehållade ordet XM2VTS.

  1. 1. 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; Högskolan i Halmstad.; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biometrics; Audio-Video synthesis; Image segmentation; XM2VTS; DXM2VTS; TECHNOLOGY; TEKNIKVETENSKAP;

    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

  2. 2. 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

  3. 3. 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

  4. 4. Evidence for "liveness" in face biometrics

    Detta är en avhandling från Göteborg : Chalmers university of technology

    Författare :Klaus Kollreider; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Motion estimation; Optical flow of lines; Quangles; Object detection; OFL; Liveness detection; Anti-spoofing measures; Structure tensor; Quantized angle features; Face biometrics;

    Sammanfattning : Aliveness or "liveness" detection is a novel but crucial topic in biometrics. In this study we will investigate it for face biometrics. The problem is given by the real-time requirements of such a system to be able to avert advanced spoofing attempts, e.g. LÄS MER