Sökning: "eye detection"

Visar resultat 1 - 5 av 49 avhandlingar innehållade orden eye detection.

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

    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

  2. 2. Reading expectations : How expectations influence our reading, eye movements, opinions, and judgments

    Detta är en avhandling från Centre for Languages and Literature, Lund University

    Författare :Alexander Strukelj; Lund University.; Lunds universitet.; [2018]
    Nyckelord :HUMANIORA; HUMANITIES; antonyms; cognitive linguistics; confirmation bias; expectations; experimental pragmatics; eye movements: reading; eye tracking; headlines; implicit and explicit detection of incongruities; myside bias; opinion shift; paragraph reading; processing; reading; sentence judgment; visual analog scale;

    Sammanfattning : The way we view the world is constantly affected by our expectations. The aim of this book is to determine how expectations affect the way we read. This will help us better understand how we process information, and how our expectations may change the way we read. The research is situated in experimental pragmatics and reading research. LÄS MER

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

    Detta är en avhandling från Centre for Languages and Literature, Lund University

    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

  4. 4. Optics for Low Vision Enabling

    Detta är en avhandling från Certec, Lund University

    Författare :Jörgen Gustafsson; Lund University.; Lunds universitet.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Eccentric viewing; Low vision optics; Low vision rehabilitation; People with low vision; Preferred retinal; locus PRL ; Resolution; Visual acuity; Ophtalmology; Medicinsk teknik; Medical technology; Rehabilitering medicinsk och social ; rehabilitation; revalidation; kinesitherapy; Oftalmologi; Physical medicine; Contrast sensitivity; Detection; Eccentric correction; CFL ; Central visual field loss; Central scotoma; Aberrations; Astigmatism;

    Sammanfattning : For people with central visual field loss, eccentric vision is all that they have to rely on. Even for those who learn how to correctly utilize their eccentric vision, it will never be as good as the central for two entirely different reasons: the off-axis optics of the eye can result in large refractive errors, and the low function of the peripheral retina. LÄS MER

  5. 5. Evaluating strategies for visual search and stimulus discrimination: Implications for training eye movements

    Detta är en avhandling från Certec, Lund University

    Författare :Richard Dewhurst; [2009]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; saccades; attention; eye movements; training; fixations;

    Sammanfattning : Eight experiments are described exploring the consequences of training eye-movements. Training is related to Findlay & Walker’s (1999) model of saccade generation, and consists of strategies for visual search and stimulus discrimination. LÄS MER