Search for dissertations about: "Face biometrics"

Found 4 swedish dissertations containing the words Face biometrics.

  2. 1. Evidence for "liveness" in face biometrics

    Author : Klaus Kollreider; Chalmers tekniska högskola; []
    Keywords : 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;

    Abstract : 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. READ MORE

  4. 2. Recognition and Evaluation by Video Synthesis Methods and Symmetry Features

    Author : Dereje Teferi Lemma; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Biometrics; eye detection; video synthesis; liveness detection; camera calibration; damascening; Generalized Structure Tensor; symmetry codes;

    Abstract : 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. READ MORE

  5. 3. Anonymizing Faces without Destroying Information

    Author : Felix Rosberg; Cristofer Englund; Eren Aksoy; Fernando Alonso-Fernandez; Vitomir Struc; Högskolan i Halmstad; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Anonymization; Data Privacy; Generative AI; Reconstruction Attacks; Deep Fakes; Facial Recognition; Identity Tracking; Biometrics;

    Abstract : Anonymization is a broad term. Meaning that personal data, or rather data that identifies a person, is redacted or obscured. In the context of video and image data, the most palpable information is the face. Faces barely change compared to other aspect of a person, such as cloths, and we as people already have a strong sense of recognizing faces. READ MORE

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

    Author : Dereje Teferi Lemma; Josef Bigun; Högskolan i Halmstad; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biometrics; Audio-Video synthesis; Image segmentation; XM2VTS; DXM2VTS; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : 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. READ MORE