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.
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Showing 1 to 16 of 16 for “"Shape modelling"”.
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Articulated Statistical Shape Modelling of the Shoulder Joint
… via the use of articulated statistical shape models (ASSMs). Articulated statistical shape models extend conventional statistical shape models by combining the shape variability of anatomical objects collected from different subjects (statistical shape models), with the physical …
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Shape and Function in Coronary Artery Disease Deciphered through Geometric Deep Learning and Statistical Shape Modelling
L'abstract è presente nell'allegato / the abstract is in the attachment
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GAUSSIAN PROCESSES FOR 3D SHAPE MODELLING OF NOISY AND INCOMPLETE DATA. AN APPLICATION TO HUMAN EARS RECONSTRUCTION
Mathematical modelling of 3D shapes is a requirement in a vast and increasing number of applications, especially when it comes to the human shape. Despite being an active branch of research, with many proposed solutions, some settings remain particularly challenging. An example of such an open …
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Towards sustainable plasmonics: a study on the shapes and plasmonic properties of magnesium nanoparticles
… to tune properties via material selection and shape control, promoting intense experimental and theoretical research. For plasmonics, where nanostructures are exploited to focus and channel light in the nanoscale, material and structure effects are studied in relation to optical properties. …
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An inquiry into virtual materiality
“We shape our tools, and thereafter they shape us," this Mcluhanism demands that when we create, we do so thoughtfully. This thesis examines artists' relation to VR tools for 3D shape modelling and their needs regarding VR creativity. A new interaction model is presented for sculpting in VR …
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Modelling non-linearity in 3D shapes: A comparative study of Gaussian process morphable models and variational autoencoders for 3D shape data
The presence of non-linear shape variation in 3D data is known to influence the reliability of linear statistical shape models (SSM). This problem is regularly acknowledged, but disregarded, as it is assumed that linear models are able to adequately approximate such non-linearities. Model …
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An Exploration into the Relationship between Knee Shape and Kinematics Before and After Total Knee Replacement
… its design and it is thought that its articular shape is the main driver of biomechanical behaviour. Although the shape of the bony knee is acknowledged to change with osteoarthritis, the specific relationship between shape changes and function is not well understood. Deep flexion, specifically …
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An Exploration into the Relationship between Knee Shape and Kinematics Before and After Total Knee Replacement
… its design and it is thought that its articular shape is the main driver of biomechanical behaviour. Although the shape of the bony knee is acknowledged to change with osteoarthritis, the specific relationship between shape changes and function is not well understood. Deep flexion, specifically …
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Techniques for Stochastic Implicit Surface Modelling and Rendering
Implicit surfaces are a powerful shape primitive for computer graphics. This thesis focuses on a shape modelling approach which generates synthetic shapes by the specification of an implicit surface generating function that has random properties. This type of graphic object can be called a …
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Morphometric Otolith Analysis
… and with a recent addition to shape modelling techniques (time-series shapelets) to determine which performs best. An investigation is carried out into transform methods that retain size-information, and whether the boundary encoding method is impacted be otolith age, performing …
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Geometric modelling and shape optimisation of pharmaceutical tablets. Geometric modelling and shape optimisation of pharmaceutical tablets using partial differential equations.
… hand can over-come this problem. A technique for shape modelling of pharmaceutical tablets based on the use of Partial Differential Equations is presented in this thesis. The volume and the sur-face area of the generated parametric tablet in various shapes have been es-timated numerically. This …
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Applications of RGB-D Cameras in Healthcare
… high-resolution grid, via a control point-based shape modelling technique, is used to show differences in the respiratory pat- tern before and after exercise. A system is described for compensating for the motion of the subject, so the resulting data only shows motion due to breathing. This …
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Visual region understanding: unsupervised extraction and abstraction
… subarea of unsupervised scene analysis or scene modelling. However, its common use of low level features does not provide a good balance between generality and discriminative ability, both a result and a symptom of the sensory and semantic gaps existing between low level computer representations …
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Object-centric Mapping
… a task of recovering full 3D object shape from a single RGB image. An open question when using deep networks to solve this question is how to generate object shape efficiently. To this end, we propose a novel multi-view representation to generate dense point cloud efficiently. …
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Patient-specific computational haemodynamics in the arteriovenous fistula and aorta of a chronic kidney disease cohort
… of the vascular wall, and inadequate outward remodelling, an insufficient increase in venous diameter and elasticity, are the two major mechanisms behind AVF failure.Considering the highly patient-specific nature of AVF, vascular access guidelines have proposed a patient-centred care approach …
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Statistical Modeling of Knee Morphology and Material Properties Considering Diverse Populations
… of orthopaedic implants is using Statistical Shape and Intensity Models (SSIMs), which can be used to incorporate patient variability directly into the orthopaedic medical device development workflow through population-based finite element analysis.</p> <p>This work aimed to construct an SSIM …