• Efficient Sample Reusage in Path Space for Real-Time Light Transport 

      Reza, Marvin (Master thesis, 2021)
      I denne oppgaven undersøker vi ulike eksisterende løsninger for sanntidssimulering av global belysning. Nærmere bestemt, ser vi på problemstillingen rundt det å beregne mengden av direkte belysning i virtuelle scener med ...
    • Ensemble of PANORAMA-based convolutional neural networks for 3D model classification and retrieval 

      Sfikas, Konstantinos; Pratikakis, Ioannis; Theoharis, Theoharis (Journal article; Peer reviewed, 2018)
      A novel method for the classification and retrieval of 3D models is proposed; it exploits the 2D panoramic view representation of 3D models as input to an ensemble of convolutional neural networks which automatically compute ...
    • Fast and accurate GPU accelerated, high resolution 3D registration for robotic 3D reconstruction of compliant Food objects 

      Isachsen, Ulrich Johan; Theoharis, Theoharis; Misimi, Ekrem (Peer reviewed; Journal article, 2020)
      If we are to develop robust robot-based automation in primary production and processing in the agriculture and ocean space sectors, we have to develop solid vision-based perception for the robots. Accurate vision-based ...
    • Forfatting og Prosedyrisk Modellering av Terreng og Landdekke med cGANs 

      Lystrup, Asbjørn Fintland (Master thesis, 2019)
      Modellering av virtuelle landskap kan være en utfordrende og tidkrevende prosess som ofte mangler god brukerkontroll, både for menneskeforfattere og for prosedyriske modelleringsmetoder. Jeg presenterer en metode for å ...
    • Fotorealistiske bilder for objekt-gjennfinning 

      Nygård, Arve (Master thesis, 2016)
      Med basis i en database av 3d-modeller fra Princeton genererer vi et datasett med 2d-bilder som kan brukes til trening og testing av algoritmer for objekt-gjenfinning. Det resulterende datasettet samt rammeverket som ble ...
    • Fractal and multifractal analysis of PET/CT images of metastatic melanoma before and after treatment with ipilimumab 

      Breki, Christina-Marina; Dimitrakopoulou-Strauss, Antonia; Hassel, Jessica; Theoharis, Theoharis; Sachpekidis, Christos; Pan, Leyun; Provata, Astero (Peer reviewed; Journal article, 2016)
      Background PET/CT with F-18-fluorodeoxyglucose (FDG) images of patients suffering from metastatic melanoma have been analysed using fractal and multifractal analysis to assess the impact of monoclonal antibody ipilimumab ...
    • Human Pose Estimation Assisted Fitness Technique Evaluation System 

      Eivindsen, Joachim Eide; Kristensen, Brede Yabo (Master thesis, 2020)
      Vektløfting er en populær og effektiv form for styrketrening, men denne metoden kommer også med høy risiko for skade blant nye løftere. Hver person har ulike utfordringer når de skal forbedre løfte-teknikken sin og det er ...
    • Human Pose Estimation Assisted Fitness Technique Evaluation System 

      Eivindsen, Joachim Eide; Kristensen, Brede Yabo (Master thesis, 2020)
      Vektløfting er en populær og effektiv form for styrketrening, men denne metoden kommer også med høy risiko for skade blant nye løftere. Hver person har ulike utfordringer når de skal forbedre løfte-teknikken sin og det er ...
    • Image-based Somatotype as a Biometric Trait for Non-Collaborative Person Recognition at a Distance and On-The-Move 

      Danelakis, Antonios; Theoharis, Theoharis (Peer reviewed; Journal article, 2020)
      It has recently been shown in Re-Identification (Re-ID) work that full-body images of people reveal their somatotype, even after change in apparel. A significant advantage of this biometric trait is that it can easily be ...
    • Image-space Ambient Obscurance in WebGL 

      Gravås, Lorents Odin (Master thesis, 2013)
      Image-space approaches to ambient obscurance have become the de-facto standard for realistic ambient lighting in real-time applications. This thesis investigates the potential applicability of such approaches for a WebGL-based ...
    • Incremental loading of terrain textures 

      Fikkan, Eirik (Master thesis, 2013)
      Graphic Processing Units (GPUs) are getting more powerful and are currently capable of displaying millions of polygons at a steady frame rate. The challenge is however, to display unique and interesting data while navigating ...
    • An indexing scheme and descriptor for 3D object retrieval based on local shape querying 

      van Blokland, Bart Iver; Theoharis, Theoharis (Peer reviewed; Journal article, 2020)
      A binary descriptor indexing scheme based on Hamming distance called the Hamming tree for local shape queries is presented. A new binary clutter resistant descriptor named Quick Intersection Count Change Image (QUICCI) is ...
    • Looking beyond appearances: Synthetic training data for deep CNNs in re-identification 

      Barbosa, I.; Cristani, Marco; Caputo, Barbara; Rognhaugen, Aleksander; Theoharis, Theoharis (Journal article; Peer reviewed, 2018)
      Re-identification is generally carried out by encoding the appearance of a subject in terms of outfit, suggesting scenarios where people do not change their attire. In this paper we overcome this restriction, by proposing ...
    • Merging Meshes from Different 3D Scanners 

      Kongevold, Dimitry (Master thesis, 2013)
      Creating digital representation of physical objects is becoming more and more popular as scanning technology becomes more available on the consumer marked. High precision close range scanners, based on structured light, ...
    • Mesh-based 3D face recognition using Geometric Deep learning 

      Wardeberg, Håkon (Master thesis, 2021)
      Face recognition has been a very active and challenging task in the Computer Vision field. Performing face recognition based on facial images can be tricky since images are illumination, scale, and pose variant. On the ...
    • Multigrid feature-based terrain generation with erosion 

      Mathisen, Thomas Lund (Master thesis, 2021)
      Landskap generering har vært et forsknings-felt i nesten 30 år og er fundamentalt i mange applikasjoner. Til tross for dette er det fortsatt mange uløste problemer, og designere er nødt til å designe terreng manuelt for å ...
    • Out of Core Voxel Data Registration 

      Stølen, Martin (Master thesis, 2015)
      Image Registration is the task of aligning two different images of the same scene taken from different viewpoints, at different times or with different sensors. Image Registration is a task often performed in processing ...
    • Partial 3D object retrieval using local binary QUICCI descriptors and dissimilarity tree indexing 

      van Blokland, Bart Iver; Theoharis, Theoharis (Peer reviewed; Journal article, 2021)
      A complete pipeline is presented for accurate and efficient partial 3D object retrieval based on Quick Intersection Count Change Image (QUICCI) binary local descriptors and a novel indexing tree. It is shown how a modification ...
    • Pecora: Presentation of Free Range Sheep Information 

      Kirkhus, Julie Johnsen (Master thesis, 2016)
      The main goal of this research is to help sheep farmers find and track their sheep, especially at the end of the grazing season, when the sheep must return to the farms. This research aims at delivering the presentation ...
    • Radial intersection count image: A clutter resistant 3D shape descriptor 

      van Blokland, Bart Iver; Theoharis, Theoharis (Peer reviewed; Journal article, 2020)
      A novel shape descriptor for cluttered scenes is presented, the Radial Intersection Count Image (RICI), and is shown to significantly outperform the classic Spin Image (SI) and 3D Shape Context (3DSC) in both uncluttered ...