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Full-Text Articles in Physics
The Application Of Tomographic Reconstruction Techniques To Ill-Conditioned Inverse Problems In Atmospheric Science And Biomedical Imaging, Vern Philip Hart Ii
The Application Of Tomographic Reconstruction Techniques To Ill-Conditioned Inverse Problems In Atmospheric Science And Biomedical Imaging, Vern Philip Hart Ii
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Tomography is an imaging technique in which 3D models of objects are created from several 2D projections viewed at different angles. When the number of available projections is limited, the resulting data are said to be sparse. This restriction is often a direct result of the imaging geometry used to acquire the data. One-sided views and a small number of receivers can reduce the range of available projections, which makes the object more difficult to reconstruct. Approximate solutions to difficult imaging problems can be obtained using a class of iterative algorithms known as the algebraic reconstruction techniques (ARTs). The presented …
Three-Dimensional Tomographic Reconstruction Of Mesospheric Airglow Structures Using Two-Station Ground-Based Image Measurements, V. P. Hart, T. E. Doyle, Michael J. Taylor, B. L. Carruth, Pierre-Dominique Pautet, Yucheng Zhao
Three-Dimensional Tomographic Reconstruction Of Mesospheric Airglow Structures Using Two-Station Ground-Based Image Measurements, V. P. Hart, T. E. Doyle, Michael J. Taylor, B. L. Carruth, Pierre-Dominique Pautet, Yucheng Zhao
All Physics Faculty Publications
A new methodology is presented to create two-dimensional (2D) and three-dimensional (3D) tomographic reconstructions of mesospheric airglow layer structure using two-station all-sky image measurements. A fanning technique is presented that produces a series of cross-sectional 2D reconstructions, which are combined to create a 3D mapping of the airglow volume. The imaging configuration is discussed and the inherent challenges of using limited-angle data in tomographic reconstructions have been analyzed using artificially generated imaging objects. An iterative reconstruction method, the partially constrained algebraic reconstruction technique (PCART), was used in conjunction with a priori information of the airglow emission profile to constrain the …