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 20 of 20 for “"Shape matching"”.
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Shape Matching for Reduced Order Models of High-Speed Fluid Flows
While computational fluid dynamics (CFD) simulations are an indispensable tool in modern aerospace engineering design, they bear a severe computational burden in applications where simulation results must be found quickly or repeatedly. Therefore, creating computationally inexpensive models that …
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Shape Matching, Relevance Feedback, and Indexing with Application to Spine X-Ray Image Retrieval
… requires effective image representation and matching methods, relevance feedback algorithms to incorporate user opinions, and efficient indexing schemes for fast access to image databases. This dissertation studies and develops approaches for all of the above areas within the context of …
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Selective assembly in deformable systems using templated assembly by selective removal
… change via deformation which influences the shape matching between the component and the substrate that TASR relies on as its underlying principle. The contact area at the interface is in turn decided by the nature of contact between the two interacting surfaces. Therefore, the Hertzian …
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Soft body animation in real-time simulations
… state for the represented object. By applying shape matching techniques, we are able to adapt traditional mesh based animations to this representation. We then allow these particles to take place in a soft body physics simulation. By making the particles track positions defined in the …
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Automated Measurement of Midline Shift in Brain CT Images and its Application in Computer-Aided Medical Decision Making
… is estimated from the deformed ventricles by shape matching method. The horizontal shift in the ventricles is then calculated based on the ideal midline and the actual midline in TBI CT images. The proposed method presents accurate detection of the ideal midline using anatomical features in …
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Color, Texture, and Shape Features for Content-Based Image Retrieval
… In MARS, we have developed and implemented a shape-matching method that is very fast computationally and invariant to rotation, translation, scale, and spatial quantization. We propose several generalizations of monochrome texture methods to work with color images and discuss their use in …
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Similarity Assessment and Retrieval of CAD Models
… similarity is no longer assessed on rigid 3D shapes. Instead, details of models are progressively simplified by using the proposed horizontal FDAG partitioning; therefore, assessment on essential similarity becomes possible. On the other hand, reusable sub-parts are extracted from complete …
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Comparing visual features for morphing based recognition
… classification using the idea of deformable shape matching. Three types of visual features, geometric blur, C1 and SIFT, are used to generate feature descriptors. These feature descriptors are then used to find point correspondences between pairs of images. Various morphable models are …
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Multi-scale and multi-spectral shape analysis: from 2d to 3d
<p>Shape analysis is a fundamental aspect of many problems in computer graphics and computer vision, including shape matching, shape registration, object recognition and classification. Since the SIFT achieves excellent matching results in 2D image domain, it inspires us to convert the 3D shape …
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Deformable meshes for shape recovery: models and applications
… of objects in motion, and objects of similar shapes where a meaningful correspondence can be established between each other. Thus, it requires tools to store, compare, and retrieve them. Many of these operations depend on successful shape recovery. Shape recovery is the task to retrieve an …
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Learning sparse features and metric in signal and image processing
… Experiments are conducted on 3D human body shape matching problem and state-of-the-art performance is achieved.
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An investigation into establishing a generalised approach for defining similarity metrics between 3D shapes for case-based reasoning (CBR)
… for defining similarity metrics between 3D shapes for the casting design problem in Case-Based Reasoning (CBR). This research investigates a new approach for improving the quality of casting design advice achieved from a CBR system using casting design knowledge associated with past cases. …
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Sketch-based retrieval of images and 3D shapes.
… techniques mainly focus on image and 3D shape retrieval, and some issues such as single- and multi-colour sketch based image retrieval and 3D shape retrieval able to deal with a big domain discrepancy between 2D sketches and 3D shapes have not been well investigated. This thesis will …
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Shape Analysis Using Spectral Geometry
<p>Shape analysis is a fundamental research topic in computer graphics and computer vision. To date, more and more 3D data is produced by those advanced acquisition capture devices, e.g., laser scanners, depth cameras, and CT/MRI scanners. The increasing data demands advanced analysis tools …
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Dominant points detection for shape analysis
… curves. After an overview of the most common shape descriptors, distinguished between simple descriptors and external methods, that focus on the analysis of boundary points of objects, and internal methods, which use the pixels inside the object also, a description of the major methods …
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Modeling and design of fiber reinforced pneumatic actuators for soft robotics applications
… for desired specifications. Towards this, a shape matching problem for FREEs is presented in this dissertation, where the objective is to design a FREE such that it matches the shape of a target design curve upon actuation. The design method uses piecewise smooth arcs or helices to …
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Segmentation and Fracture Detection in CT Images for Traumatic Pelvic Injuries
… algorithm then uses a template-based best shape matching method that provides an entirely automated segmentation process. This is followed by the proposed Registered Active Shape Model (RASM) algorithm that extracts pelvic bone tissues using more robust training models than the Standard ASM …
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A COMPREHENSIVE FRAMEWORK FOR STROKE TRAJECTORY RECOVERY FOR UNCONSTRAINED HANDWRITTEN DOCUMENTS
… an automated evaluation measure based on image matching by finding the difference between original and rendered images. We also evaluated the preservation of readability of words for original and rendered images with a transformer-based word recognition network. Since our proposed STR system …
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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
… codes. Chapter 3 reformulates rigid point-set matching as distribution learning on SO(d): a depth-1, n-qubit Born machine minimises a kernel maximum-mean-discrepancy loss that coincides with negative kernel correlation. The circuit uncovers all symmetry-related optimal rotations for highly …