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Auflistung nach Schlagwort "Iris"

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  • Textdokument
    Improving Very Low-Resolution Iris Identification Via Super-Resolution Reconstruction of Local Patches
    (BIOSIG 2017, 2017) Alonso-Fernandez,Fernando; Farrugia,Reuben A.; Bigun,Josef
    Relaxed acquisition conditions in iris recognition systems have significant effects on the quality and resolution of acquired images, which can severely affect performance if not addressed properly. Here, we evaluate two trained super-resolution algorithms in the context of iris identification. They are based on reconstruction of local image patches, where each patch is reconstructed separately using its own optimal reconstruction function. We employ a database of 1,872 near-infrared iris images (with 163 different identities for identification experiments) and three iris comparators. The trained approaches are substantially superior to bilinear or bicubic interpolations, with one of the comparators providing a Rank-1 performance of ∼88% with images of only 15×15 pixels, and an identification rate of 95% with a hit list size of only 8 identities.
  • Konferenzbeitrag
    Iris - Unterstützung kooperativer Dokumentenbearbeitung in Weitverkehrsnetzen
    (Computer Supported Cooperative Work (CSCW) in großen Unternehmungen, 1996) Koch, Michael; Köhler, Daniel
    Dieser Beitrag beschreibt das Konzept und den aktuellen Stand von IRIS; einer Umgebung zur Unterstützung kooperativer Dokumentenbearbeitung. Besonders interessant für den Einsatz in großen Unternehmungen macht das System seine Einsetzbarkeit in Weitverkehrsumgebungen.