Sökning: "Ring artifact"

Hittade 4 uppsatser innehållade orden Ring artifact.

  1. 1. Augmented Reality-spel för att motverka social isolering

    Kandidat-uppsats, Stockholms universitet/Institutionen för data- och systemvetenskap

    Författare :Egil Österlind; Axel Ingelsson Fredler; [2023]
    Nyckelord :Augmented Reality; Intellectual Disability; Autism; Development of social interactions; Adult individuals; Social isolation; Augmented Reality; Intellektuell funktionsnedsättning; Autism; Utveckling av sociala interaktioner; Vuxna individer; Social Isolering;

    Sammanfattning : hälsotillstånd. Individer med intellektuell funktionsnedsättning, autism, eller båda nedsättningar, har ofta högre risk att hamna i social isolering än individer utan dessa funktionsnedsättningar. LÄS MER

  3. 2. Deep Ring Artifact Reduction in Photon-Counting CT

    Master-uppsats, KTH/Fysik

    Författare :Konstantinos Liappis; [2022]
    Nyckelord :Photon¬counting; Spectral CT; Material Decomposition; Deep learning; Resnet; Ring artifact; Sinogram; Fotonräknande; Spektral datortomografi; Materialdekomposition; Djupinlärning; Resnet; Ringartefakt; Sinogram;

    Sammanfattning : Ring artifacts are a common problem with the use of photon-counting detectors and commercial deployment rests on being able to compensate for them. Deep learning has been proposed as a candidate for tackling the inefficiency or high cost of traditional techniques. LÄS MER

  4. 3. Material decomposition using a photon counting X-ray detector in low energy range

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Rasmus Solem; [2021]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Material decomposition in X-ray imaging is used to separate different materials or elements in an image and to quantify their respective concentration. The material decomposition and quantification are made possible by the dependency of attenuation on the attenuating material and photon energy. LÄS MER

  5. 4. Securing Safebook : Secure Data Access Control and Key Management for Safebook

    Master-uppsats, KTH/Radio Systems Laboratory (RS Lab)

    Författare :Waqas Liaqat Ali; [2013]
    Nyckelord :User Privacy; Access Control; Distributed Social Networks; Key Management; Användarnas Privatliv; Atkomstkontroll; Distribuerade Sociala Nätverk; Nyckelhantering;

    Sammanfattning : Online social networks have become a fast and efficient way of sharing information and experiences. Over the past few years the trend of using social networks has drastically increased with an enormous amount of users’ private contents injected into the providers’ data centers. LÄS MER