Sökning: "3D Reconstructions"

Visar resultat 1 - 5 av 38 uppsatser innehållade orden 3D Reconstructions.

  1. 1. Assessing the Efficiency of COLMAP, DROID-SLAM, and NeRF-SLAM in 3D Road Scene Reconstruction

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Marcus Ascard; Farjam Movahedi; [2023]
    Nyckelord :3D reconstruction; Visual SLAM; Pose evaluation; Point cloud evaluation; Road scenes; Technology and Engineering;

    Sammanfattning : 3D reconstruction is a field in computer vision which has evolved rapidly as a result of the recent advancements in deep learning. As 3D reconstruction pipelines now can run in real-time, this has opened up new possibilities for teams developing Advanced Driver Assistance Systems (ADAS), which rely on the camera system of the vehicle to enhance the safety and driving experience. LÄS MER

  3. 2. Effects of Ultrafast Ionization in X-ray Coherent Diffraction Imaging

    Master-uppsats, KTH/Kemi

    Författare :Arezu Sehati; [2023]
    Nyckelord :Coherent Diffraction Imaging; X-ray Free Electron Lasers; Refractive index; Core-shell nanoclusters; Rare-gas ionization; Koherent Diffraktionsavbildning; Röntgenfrielektronlaser; Brytningsindex; Core-shell-nanokluster; Ädelgasjonisering;

    Sammanfattning : Koherent Diffraktionsavbildning med en intensiv röntgenpuls från en Frielektronlaser har möjliggjort strukturbestämning av isolerade nanopartiklar som inte går att studera med hjälp av konventionella metoder, så som elektronmikroskopi. En mycket kort pulslängd tillsammans med spridningssignalens beroende av objektets elektroniska struktur medför också möjligheten att studera inducerad ultrasnabb dynamik med denna teknik. LÄS MER

  4. 3. Comparison of Modified Double Tray Method and 3D scanning i prosthodontics

    Master-uppsats, Umeå universitet/Institutionen för odontologi

    Författare :Elsa Nermo; Eloïse Rousseau; [2023]
    Nyckelord :3D scanning; modified double tray method.;

    Sammanfattning : The purpose of this in vitro study was to investigate and to compare the precision of two different impression techniques for oral prosthetic construction, namely the analogue modified double tray method, and the digital three-dimensional scanning with Trios 3D shape intraoral scanner. The analog method used was a modified double tray method where the tray had been removed to diminish vertical discrepancies in occlusion. LÄS MER

  5. 4. Exploration of Alternative Image Representation Using Signed Distance Functions

    Master-uppsats, Lunds universitet/Institutionen för designvetenskaper

    Författare :Jakub Olejnik; [2023]
    Nyckelord :computer graphics; SDF-based rendering; machine learning; Technology and Engineering;

    Sammanfattning : This project leverages the core concepts of differentiable rendering to find alternative representation of images using geometric primitives rendered with Signed Distance Functions. By utilising gradient-descent-based methods it is possible to find optimal parameters of rendered primitives to create high-quality reconstruction. LÄS MER

  7. 5. A Gotlandic Picture Stone Tradition Reconsidered : An analysis and reclassification of the so-called kerbstones

    Master-uppsats, Uppsala universitet/Institutionen för arkeologi och antik historia

    Författare :Cherie Jeanette Larkin; [2023]
    Nyckelord :Gotland; picture stones; kerbstones; grave settings; edge chains; ritual space; 3D models; Gotland; bildstenar; kantstenar; gravsättningar; kantkedjor; rituellt utrymme; 3D-modeller;

    Sammanfattning : In 1941/42, Sune Lindqvist published his seminal work on the Gotlandic picture stones (Gotlands Bildsteine I & II) in which he included a category of stones that he interpreted as kerbstones. However, Lindqvist’s kerbstones have not received further examination or contextualization to determine the validity of his categorization. LÄS MER