Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"rigid motion"”.
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I movimenti rigidi da Euler al Programma di Erlangen
… of isometry. This study examines the concept of rigid motion and gives a first historical account of its evolution during the period going from the Introduction in analysin infinitorum by Euler (1748) to the Erlangen Programm by Klein (1872). In the second and third part of this dissertation …
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Simulation tools for microelectromechanical systems
… of internal degrees of freedom. Their mostly rigid motion is exploited leading to a mixed rigid-elastic formulation. This formulation's advantage is apparent when it is incorporated in an efficient coupled domain simulation technique and examples are presented exploring geometry effects on …
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Algorithms and systems for low power time-of-flight imaging
… fact that many applications operate in nearly rigid environments, and our algorithms use the sparse correspondences across the consecutive RGB images to estimate the rigid motion and use it to obtain new depth maps.
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Steklov geometry processing : an extrinsic approach to spectral shape analysis
… capture the spatial embedding of a shape up to rigid motion, and many previous extrinsic methods lack theoretical justification. Instead, we consider the Steklov eigenvalue problem, computing the spectrum of the Dirichlet-to-Neumann operator of a surface bounding a volume. A remarkable property …
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Learning about dynamic objects and recognizing static form
The effects of observed object motion on object perception are examined in two sets of studies. The first section of the thesis provides a thorough examination of various untested aspects of the basic "temporal association" hypothesis, which suggests that object motion provides a principled basis …
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Discovering and Applying Geometric Transformations: Transformations to Show Congruence and Similarity
… and begin to lay a foundation for the basics of rigid motion in the plane, with or without the use of coordinates. The results supported the claim that teachers’ transformation content knowledge needs to be deepened overall and in particular with respect to the application of transformations to …
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Deep learning-based approaches for depth and 6-DoF pose estimation
… geometric constraints (e.g. epipolar constraint, rigid motion of objects). Deep learning framework has achieved impressive progress in many computer vision tasks such as image recognition and segmentation. However, applying deep learning-based approaches to geometric vision problems, which are …
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A Robust and Efficient Framework for Slice-to-Volume Reconstruction: Application to Fetal MRI
Volumetric reconstruction in presence of motion is a challenging problem in medical imaging. When imaging moving targets, many modalities are limited to fast 2D imaging techniques that provide cross-sectional snapshots (2D images) of the subject with an attempt to "freeze'' in-plane motion. …
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Unstructured grid technologies for hydrodynamic applications with bodies in relative motion and mesh deformation
… applications with bodies in relative motion and mesh deformation are presented. A parallel universal mesh deformation scheme is developed to manage deforming surface and volume grids for both aerodynamic and hydrodynamic applications. The approach is universal and independent of grid …
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High-Fidelity Image -Based Modeling
… tracks its vertices over time by using a local rigid and a global non-rigid motion models. An expansion strategy, which has proven extremely effective for multi-view stereo, is employed for fast and complex motions that existing approaches cannot handle. Qualitative and quantitative experiments …
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Sequence Dependent Elasticity of DNA
… experiments and simulation. It is based on the rigid base–pair chain (rbc) model which captures all basic deformation modes on the scale of individual base–pair (bp) steps. Existing microscopic parametrizations of the rbc model rely on indirect methods. A way to relate them to biochemical …
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An analysis of frictional effects in non-stationary contact problems for metal forming simulations
… includes the surface spin induced by the rigid motion of a contact point sliding over the tool surface, and the material spin occurring during the elastic-plastic deformation of the blank. This is introduced by adapting the incremental relations of the friction slip. This thesis presents …
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Intelligent video surveillance
… number of parameters. The approach is based on rigid motion segmentation by Bayesian filtering. The Bayesian filter, which was proposed specially for this method and contributes to its novelty, is formulated as a generic approach, and then applied to the video analytics problems. The method is …
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Investigating Topological Quantum Matter: Machine Learning Topological Phases, Topological Quantum Codes, Interplay of Disorder and Topology via Transport Phenomena and Phase Transitions
… loss to discover every symmetry-related rigid motion between two point clouds, extending naturally to a classically intractable quantum kernel. Part III, finally, probes the robustness of multi-gap Euler semimetals: Chapter 4 defines a real-space Euler marker that reveals disorder-induced …