Sökning: "spatio-temporal interpolation"

Hittade 5 uppsatser innehållade orden spatio-temporal interpolation.

  1. 1. Deep learning for temporal super-resolution of 4D Flow MRI

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Pia Callmer; [2023]
    Nyckelord :Temporal super-resolution; 4D Flow MRI; CNN; Artificial Intelligence; MRI; 4D flow; Temporal superupplösning; 4D flöde MRI; CNN; artificiell intelligens; MRI; 4D-flöde;

    Sammanfattning : The accurate assessment of hemodynamics and its parameters play an important role when diagnosing cardiovascular diseases. In this context, 4D Flow Magnetic Resonance Imaging (4D Flow MRI) is a non-invasive measurement technique that facilitates hemodynamic parameter assessment as well as quantitative and qualitative analysis of three-directional flow over time. LÄS MER

  3. 2. Assessing annual forest phenology: a comparison of Unmanned Aerial Vehicle (UAV) and phenocamera datasets

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Shangharsha Thapa; [2020]
    Nyckelord :Geography; Ecosystem Analysis; Near-surface Remote Sensing; UAV; Phenocamera; Forest Phenology; Phenophase; Seasonality; NDVI; GCC; Geomatics; Earth and Environmental Sciences;

    Sammanfattning : Near-surface remote sensing platforms such as Unmanned Aerial Vehicles (UAVs) and phenocameras appear to be potential platforms for keeping track of seasonal dynamics at a local scale. This research focusses on extracting time series of different vegetation indices (VIs) from both platforms, computing seasonality events from them and comparing the results against spectral sensor data. LÄS MER

  4. 3. Evaluating spatial mapping using interpolation techniques

    Master-uppsats, Linköpings universitet/Institutionen för datavetenskap

    Författare :Allan Gholmi; [2017]
    Nyckelord :;

    Sammanfattning : In this thesis, the inverse distance weighting, different kriging methods, ordinary least squares and two variants of the geographically weighted regression was used to evaluate the spatial mapping abilities on an observed dataset and a simulated dataset. The two datasets contain the same bioclimatic variable, near-surface air temperature, uniformly distributed over the whole world. LÄS MER

  5. 4. Feasibility of a low-cost weather sensor network for agricultural purposes : a preliminary assessment

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Kees Van Duijvendijk; [2015]
    Nyckelord :coffee; microclimates; Costa Rica; Physical Geography and Ecosystem analysis; spatio-temporal interpolation; GIS; micro-sensors; Earth and Environmental Sciences;

    Sammanfattning : This study has focused on challenges encountered when setting up a weather-network for agricultural purposes (e.g. linking temperature to the suitability of crops and pest incidence) with only low-cost sensors and materials. LÄS MER

  7. 5. Human Action Recognition Based on Linear and Non-linear Dimensionality Reduction using PCA and ISOMAP

    L3-uppsats, KTH/Reglerteknik

    Författare :Isabel Serrano Vicente; [2006]
    Nyckelord :;

    Sammanfattning : Understanding and interpreting dynamic human actions is an important area of research in the field of computer vision and robotics. In robotics, it is closely related to task programming. Traditionally, robot task programming has required an experienced programmer and tedious work. LÄS MER