Sökning: "super resolution imaging"

Visar resultat 1 - 5 av 19 uppsatser innehållade orden super resolution imaging.

  1. 1. ISAR Imaging Enhancement Without High-Resolution Ground Truth

    Master-uppsats, Linköpings universitet/Datorseende

    Författare :Moltas Enåkander; [2023]
    Nyckelord :SAR; SAR Imaging; ISAR; ISAR Imaging; Machine learning; Convolutional neural network; CNN; neural network; Super resolution; Unsupervised learning;

    Sammanfattning : In synthetic aperture radar (SAR) and inverse synthetic aperture radar (ISAR), an imaging radar emits electromagnetic waves of varying frequencies towards a target and the backscattered waves are collected. By either moving the radar antenna or rotating the target and combining the collected waves, a much longer synthetic aperture can be created. LÄS MER

  3. 2. Multiple-Emitter Super-resolution Imaging using the Alternating Descent Conditional Gradient Method

    Kandidat-uppsats, Lunds universitet/Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Författare :Dolev Illouz; [2023]
    Nyckelord :super-resolution; alternating descent conditional gradient method; ADCG; multiple-emitter localization; nanoscale imaging; single molecule tracking; Physics and Astronomy;

    Sammanfattning : This thesis examines the state-of-the-art 2D super-resolution technique alternating descent conditional gradient (ADCG) method's ability to accurately localize fluorophores in diffraction-limited single molecule images (SMI) and analyze the impact of pre-processing and post-processing modules on ADCG's fluorophore localization. A synthetic dataset obtained from the 2013 Grand Challenge localization microscopy and a temporally linked dataset obtained from an unpublished set of Optical DNA mapping experiments performed by Jonathan Jeffet at the NanoBioPhotonix Lab at Tel-Aviv University were initially segmented to extract their noise parameters. LÄS MER

  4. 3. X-Ray Tomography on Intestine Samples

    Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Julia Rogalinski; [2023]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Enteric neuropathy describes a disease of the bowel caused by anomalies in the enteric nervous system. Patients suffering from this disease have symptoms including nausea, vomiting, diarrhea and pain. As enteric neuropathy is not well understood yet, its diagnosis is a non-trivial task. LÄS MER

  5. 4. Generalized super-resolution of 4D Flow MRI : extending capabilities using ensemble learning

    Master-uppsats, Linköpings universitet/Institutionen för medicinsk teknik

    Författare :Adam Hjalmarsson; Leon Ericsson; [2023]
    Nyckelord :4D Flow MRI; Ensemble learning; Super-resolution; Machine learning; Neural networks; 4DFlowNet;

    Sammanfattning : 4D Flow Magnet Resonance Imaging (4D Flow MRI) is a novel non-invasive technique for imaging of cardiovascular blood flow. However, when utilized as a stand-alone analysis method, 4D Flow MRI has certain limitations including limited spatial resolution and noise artefacts, motivating the application of dedicated post-processing tools. LÄS MER

  7. 5. Single-molecule Imaging of the Cell Division Ring in Escherichia coli Using the ALFA-tag

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Emma Westlund; [2023]
    Nyckelord :ALFA-tag; Escherichia coli; Divisome protein FtsZ; mEos3.2; Nanobodies; Nanotags; PALM; Plasmid transformation; sfGFP; Single-molecule Imaging; ALFA-tag; Escherichia coli; Divisomprotein FtsZ; mEos3.2; Nanokroppar; Nanotaggar; PALM; Plasmidtransformation; sfGFP; Enmolekyl-mikroskopi;

    Sammanfattning : The use of super-resolution (SR) microscopy is an important tool for understanding the inside mechanisms of bacterial cells. However, for SR imaging, the labelling of the proteins of interest is a great challenge as flourescent proteins (FPs) are often too big to be directly fused to the target protein and traditional immunolabelling with antibodies creates too long separation between the fluorophore and the target protein. LÄS MER