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 17 of 17 for “"geometric transformations"”.
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Exploring Geometric Transformations through the 5E Model
… designed to foster engagement and discoveries of geometric transformation using the 5E instructional model, where the 5E requires students to engage, explore, explain, elaborate, and evaluate content. Each of the four lessons begins with an investigation into each transformation’s properties and …
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Discovering and Applying Geometric Transformations: Transformations to Show Congruence and Similarity
<p>The use and application of geometric transformations is a fundamental standard for the Common Core State Standards. This study was developed to determine current high school teachers’ prior mathematical content knowledge and develop their content knowledge of transformations and their …
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Multi-sensor data fusion using geometric transformations for the nondestructive evaluation of gas transmission pipelines
… artificial neural network is used to perform geometric transformations on data obtained from multiple sources. The technique allows the user to define the redundant and complementary information present in the data sets. The efficacy of the algorithm is demonstrated using simulated canonical …
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Heterogeneous multi-sensor data fusion using geometric transformations and Parzen windows for the nondestructive evaluation of gas transmission pipelines
… and image processing strategies, including geometric transformations, radial basis function approximations and Parzen windows density estimations, have been used to fuse data from both homogeneous and heterogeneous sensors. Application results using data from laboratory experiments …
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New algorithms for image analysis, compression, and 2-D spectrum estimation in the radon space
… of rendering the moment-patterns invariant to geometric transformations is presented. An alternative descriptor based on the moment-patterns, invariant to geometric transformations as well as contrast, is proposed. Selective reconstruction of objects from noisy projections is considered as an …
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Mathematical Advancements in Geometric Algebra for 3D Registration Problems
… PhD thesis investigates the reformulation of geometric registration algorithms using Geometric Algebra (GA) to solve transformation problems traditionally handled with Linear Algebra (LA). Geometric transformations play a key role in fields like robotics, computer vision and 3D modelling, as …
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A "divide-and-conquer" strategy for NDE signal inversion in gas transmission pipelines
… that employ artificial neural networks treat all geometric regions of the NDE signal equally. Consequently, when the inversion algorithm is presented with input data that is significantly different from the training data, the performance of the network deteriorates significantly. This thesis …
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From space to episodes : modeling memory formation in the hippocampal-neocortical system
… changes when the environment undergoes simple geometric transformations are in accordance with experimental data. Representations of multiple environments can be stored and recalled with little interference, and have the appropriate degrees of similarity in visually similar environments.
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AN AUTOMATIC BIO-INSPIRED KEY POINT DETECTION AND EXTRACTION STRATEGY FOR CLASSIFICATION OF 2-D AND 3-D IMAGES
… classification performances regardless of geometric and spatial transformation of the images. The model’s performance is evaluated by generating synthetic images of shapes of airplanes that contain random high-density noise, occlusion as an addition to the general geometric transformations …
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Physically based geometry and reflectance recovery from images
… to detect and match repeated patterns undergoing geometric transformations. This allows effective enforcement of translational symmetry constraint in the recovery of texture lattice. Secondly, we study the problem of computational relighting using RGB-D data, where the depth data is acquired …
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Geometric uncertainty models for correspondence problems in digital image processing
… and second, the computation of consistent geometric transformations relating correspondences on scene objects. This PhD presents a theoretical framework for solving correspondence problems with geometric features (such as points and straight lines) representing rigid objects in image …
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Computational Study of Colloids in Suspension: Effective Interactions and Phase Transitions
… slow-down problem. The so-called generalized geometric cluster algorithm applies geometric transformations to identify clusters of particles. Owing to the non-local and rejection-free features of cluster moves, typical efficiency improvements achieved by this algorithm amount to several orders …
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Multidisciplinary design of thermally radiating structures using a level set based topology optimization approach
… to fabricate flight hardware with unprecedented geometric complexity has challenged the limits of human design intuition. As a result, there is a critical need for free-form design methods to harness the full potential of these new manufacturing techniques. This thesis presents a level set based …
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ScatterNet Hybrid Frameworks for Deep Learning
… systems have been proposed that capture geometric properties such as shapes, textures, motion and 3D perspective projections using filtering, non-linear modulus, and pooling operations. Deep learning networks ignore these geometric considerations and compute descriptors having suitable …
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Neutral hydrogen mass distributions in galaxies uncovered by three-dimensional stacking
… the concept of aligning signal through various geometric transformations (rotation, stretching, and spectral-inversion) as a first approach to a ‘Comprehensive Unearthing of Baryons in Extended-regions using a Stacker' (Cube Stacker). Developed in Python 3.8, this pipeline bridges the gap of …
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Automatización e implementación de algunos problemas algebráicos y geométricos
… C T In this Thesis we deal with several classic geometric problems: 1. Implementation of the Equiform Group of geometric transformations in IR . 2. Simulation of the 17 Wallpaper Patterns, with constructive generation of periodic mosaics. 3. Simulation of the geometric transformation "Inversión" …
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Image Based View Synthesis
… viewpoints. After automatically recovering the geometric transformations between these images, a series of photo-realistic virtual views can be rendered and a virtual environment covered by these several static cameras can be synthesized. This image-based approach has applications in object …