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.
Results
Showing 1 to 20 of 257 for “"Imaging systems"”.
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Characterization of infrared imaging systems
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Tsunami monitoring using airglow imaging systems
… overview on the utilization of airglow imaging systems for monitoring tsunamis. We develop the basic theory behind tsunami-ionospheric coupling from first principles and give special attention to the topic of tsunami-ionospheric coupling efficiency. This is followed by the presentation …
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Automated rapid thermal imaging systems technology
… and deploying an Automated Rapid Thermal Imaging Systems Technology (ARTIST) which is capable of street level drive-by scanning in real-time. I am doing for thermal imaging what Google Earth did for visual imaging. I am mapping the world's temperature, window by window, house by house, …
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Inverse filtering for virtual acoustic imaging systems
… implementation of two-channel virtual acoustic imaging systems that utilise loudspeakers. The basic objective of such systems is to invert the electroacoustic plant between the input to the loudspeakers and the output at the listener’s ears and hence make it possible for a pair of binaural …
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New photonic imaging systems for biomedical applications
… used in biological and medical research. O2 imaging by PLIM is gaining popularity as it can provide an accurate, quantitative, and calibration-free mapping of O2 concentration in complex biological samples and is unaffected by external factors such as probe concentration, autofluorescence, …
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Smart optical imaging systems with automated electronics
… problems in the field of shape sensing and imaging. First half of the thesis proposes shape sensing techniques that use an Electronically Controlled Variable Focus Lens (ECVFL) within a smart optical design suitable for a wide range of applications including shape sensing and projection …
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Multiframe Superresolution Techniques For Distributed Imaging Systems
… measurement noise. We exploit diversities in the imaging channels, namely, the number of cameras, magnification, position, and rotation, to undo degradations. Using an iterative back-projection (IBP) algorithm we quantify the improvements in image fidelity gained by using multiple frames compared …
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Image acquisition and storage for medical imaging systems
Image Acquisition and Storage for Medical Imaging Systems investigates the issues and requirements to develop a medical imaging system for the dental industry. Research was conducted through studying image acquisition and digitization systems, image file format standards, and data image …
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Modal Analysis of Millimetre-wave and Terahertz Imaging Systems
… beam modes within the context of far-infrared imaging systems. Laguerre and Hermite-Gaussian modes have been frequently reported in the analysis of paraxial millimetre-wave propagation in astronomical optical systems. Here the method of Gaussian beam mode analysis (GBMA) is extended to fields …
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Investigation of plenoptic imaging systems: a wave optics approach
Conventional imaging devices only capture a part of the total information carried by the light. A new generation of imaging devices, plenoptic systems, use an array of micro lenses to codify the light coming from an object into a four dimensional function called the light field. The final image is …
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Development of X-ray Coherent Scatter Projection Imaging Systems
Coherent scatter x-ray imaging systems are sensitive to material structure and chemical composition, and generate images with contrast superior to conventional transmission x-ray imaging. The goal of this thesis was to develop a scatter projection imaging system capable of acquiring images in less …
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Imaging systems for minimally invasive molecular guided cancer surgeries
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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Simulation of X-ray imaging systems for luggage inspection
This thesis describes XL, an x-ray imaging simulator for luggage inspection. This software system runs on a workstation and models x-ray sources, x-ray detectors and objects between them. A simple graphical interface permits the user to specify simulation parameters and inputs. XL then uses Monte …
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Development of Multi-modal and Super-resolved Retinal Imaging Systems
<p>Advancements in retinal imaging technologies have drastically improved the quality of eye care in the past couple decades. Scanning laser ophthalmoscopy (SLO) and optical coherence tomography (OCT) are two examples of critical imaging modalities for the diagnosis of retinal pathologies. However …
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Discrete-time band-limited extrapolation algorithms for radar imaging systems
This thesis is a study of band-limited extrapolation algorithms. In the one-dimensional case, we examine the Weighted-Norm, Iterative Weighted-Norm, Control-Point, Data Segmentation, and Cascade Form algorithms. Each modifies the reconstruction subspace used in the extrapolation. The basic …
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Design and applications of cold-cathode X-ray imaging systems
X-ray computed tomography (CT) and planar x-ray imaging are mainstays of modern clinical care. The electron generation mechanism in standard x-ray tubes - specifically, a thermionic cathode - is reliable and capable of high current. However, thermionic cathodes are bulky, and cannot be pulsed …
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