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 7 of 7 for “"inverse reconstruction"”.
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High fidelity imaging in electrical impedance tomography
This thesis addresses the computational reconstruction of images using Electrical Impedance Tomography (EIT). EIT is an imaging method, in which electrical currents are injected through electrodes into a conducting volume and the resulting potential distribution is measured at surface electrodes. …
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Advanced parallel magnetic resonance imaging methods with applications to MR spectroscopic imaging
… sensitivities. Novel encoding and reconstruction techniques for parallel MRI are investigated in this dissertation. The main goal is to improve the actual reconstruction methods and to develop new approaches for massively parallel MRI systems that take advantage of the higher …
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Compound-Gaussian-regularized inverse problems: theory, algorithms, and neural networks
Linear inverse problems are frequently encountered in a variety of applications including compressive sensing, radar, sonar, medical, and tomographic imaging. Model-based and data-driven methods are two prevalent classes of approaches used to solve linear inverse problems. Model-based methods …
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Using the Hough transform for analysis of images containing straight lines
… the Hough transform can be inverted using the inverse Radon transform. The Radon transform is important in the medical field, where its inverse, reconstruction from projections, is used to view "slices" through a patient in Computer Aided Tomography. The straight line Hough transform produces a …
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Multidimensional and High Frequency Heat Flux Reconstruction Applied to Hypersonic Transitional Flows
… understanding the mathematical properties of the reconstruction such as regularity, sensitivity to noise, multi-resolution, and accuracy. This research is part of an effort to develop small-footprint heat flux sensors able to measure high-frequency fluctuations on test articles in a hypersonic …
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Intragrating sensing using chirped optical fibre Bragg gratings
… reduction in reflectance complicates the grating inverse reconstruction technique to recover the disturbance profile and is also computationally expensive. Thus the selection of CFBGs is desirable because each Bragg wavelength in the broadband reflection spectrum from a CFBG corresponds to …
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Understanding nanomagnetism from all angles: Developments in magnetic electron tomography
… process as well as through changes to the data reconstruction process. At the end of the thesis, the individual strands of prior knowledge, electron tomography, and image analysis are applied independently to different projects in a section which showcases how magnetic electron tomography is …