Sökning: "B-Spline"

Visar resultat 1 - 5 av 16 uppsatser innehållade ordet B-Spline.

1. 1. Homogenization of a higher gradient heat equation: Numerical solution of the cell problem using quadratic B--spline based finite elements

   Magister-uppsats, Karlstads universitet/Institutionen för matematik och datavetenskap (from 2013)

   Författare :Samba Dumbuya; [2023]
   Nyckelord :Homogenization of a higher gradient heat equation; Two-scale expansion; fourth-order cell problem; temperature distribution; quadratic B-spline; finite element methods; effective conductivity vs volume fraction;

   Sammanfattning : This study focuses on the numerical solution of a fourth-order cell problem obtained through a two- scale expansion approach applied to a higher gradient heat equation microscopic problem involving temperature distributions. The main objective is to investigate the temperature field within the macroscale domain and compute the effective conductivity using finite element methods. LÄS MER

3. 2. Optimization-Based Path Planning For Indoor UAVs in an Autonomous Exploration Framework

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Marco Cella; [2023]
   Nyckelord :Optimal Path Planning; B-Splines; Autonomous Exploration; Indoor UAV; Crisis and Disaster Management; Trajectory Estimation; SITL; Optimal Banplanering; B-Splines; Autonom Utforskning; Inomhus-UAV; Kris- och Katastrofhantering; Uppskattning av Banor; SITL;

   Sammanfattning : Exploration is a fundamental problem in robotics that requires robots to navigate through unknown environments to autonomously gather information about their surroundings while executing collision-free paths. In this project, we propose a method for producing smooth paths during the exploration process in indoor environments using UAVs to improve battery efficiency and enhance the quality of pose estimation. LÄS MER

4. 3. FPGA Accelerated Digital Image Correlation For Clamping Force Measurement

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :János Csanád Csuvarszki; [2023]
   Nyckelord :Digital image correlation; Field-programmable gate array; High-level synthesis;

   Sammanfattning : Digital image correlation is a contactless optical method used for displacement and strain measurement which has become increasingly popular in the field of experimental mechanics. A specialized use case for the algorithm is to measure the clamping force in bolted joints, a crucial metric when considering the longevity and reliability of the constructs. LÄS MER

5. 4. Smooth Particle Ribbons Through Hardware Accelerated Tessellation

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Oliver Eriksson; [2022]
   Nyckelord :particles; tessellation; b-spline; mesh shaders;

   Sammanfattning : Generating and rendering ribbons from a stream of particles is common in games and VFX to visualize flow. To create detailed smooth particle ribbons this work combines tessellation and B-splines, which gives smooth surfaces with contiguous normals. LÄS MER

7. 5. DEFORMABLE IMAGE REGISTRATION OF SPINE MAGNETIC RESONANCE IMAGES WITH ELASTIX FOR DETAILED CHARACTERIZATION OF DISC LOADING BEHAVIORS

   Master-uppsats,

   Författare :Zainab Sirat; [2021-05-10]
   Nyckelord :Medical physics; Registration; MRI; Spine;

   Sammanfattning : Purpose: This work aimed to develop an optimized strategy for registration of spine magnetic resonance (MR) images acquired with and without spinal loading, as well as evaluate the quality of the registration strategy with commonly used quality assessment methods. Method: Previously collected MR images of the lumbar spine of 37 individuals were re analyzed. LÄS MER