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 92 for “"High resolution images"”.
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Laser-based Fourier ptychographic microscopy (FPM)
… that laser HLG illumination shows better high-resolution images with a large field of view in comparison to traditional LED-HDC. In addition, we notice the quality of the image depends on the noise from the illumination source.
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Generation of high resolution tomographic images for NDT applications
… for the generation of quantitative ultrasonic images in non-destructive testing have generally involved a substantial cost in terms of data storage and computational time, and have thus found limited application. Preference has therefore been given to the more straightforward imaging methods, …
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RECONSTRUCTION MODELS TO IMPROVE IMAGE QUALITY
High-resolution images provide more information for better post-processing such as detection, recognition, segmentation, identification, and visualization. The need for high-resolution images occurs in health care, where the physician needs a high-quality image of the patient in order to make …
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Large image support in digital repositories
… building these digital archives and collections, images such as maps are often are captured in an uncompressed, high-resolution format to preserve as much detail as possible. This process, of high-resolution archiving gives rise to the problem of providing the end-user with access to these large …
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High-resolution virtual try-on with garment extraction using generative adversarial networks
… focuses on garments from standalone images, this research addresses the use of images where the garment is already being worn by another individual. The study bridges a notable gap as most current systems are tailored for standalone garment images. The proposed system, given a pair of …
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Applied Plankton Image Classification for Imaging FlowCytobot Data
… automated submersible flow cytometer, produces high resolution images of plankton at rates up to 10 Hz for months or years, resulting in billions of images. This project compares various methods to categorize incoming images of plankton gathered by the IFCB - Convolutional Neural Nets (CNNs), …
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Manufacturability of lab-on-chip devices : dimensional variation analysis of electrode foils using visual technology
… this purpose optical imaging was used to obtain high-resolution images of the electrodes and an algorithm was developed in order to estimate the critical dimensions of interdigitated fingers from the images. The results showed that the dimensional variation in the electrodes had insignificant …
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Novel View Synthesis from Casually Recorded Videos
… approaches typically use, where there are dense, high-resolution images of the scene. In this paper, we propose a method for refining an initial, coarse scene geometry which we then use for novel view synthesis on short video sequences. The core of our method is a geometry refinement step where we …
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Real-time, Software-based Ultrasound Image Formation for Array Transducer Systems
… more portable and less expensive. However, high resolution images needed in medical ultrasound rely on multichannel ultrasonic transducers requiring expensive, dedicated hardware to perform beamforming. This dissertation explores the reduction of hardware requirements for multi-channel …
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Semantic Segmentation and 3D Reconstruction of Concrete Cracks
… and modeling cracks in concrete structures from high-resolution images captured by a stereo camera is proposed. First, using deep learning-based semantic segmentation networks trained on a custom-dataset, crack pixels are identified. Moreover, techniques for improving the accuracy of such …
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A Millimeter Wavelength Interferometric Study of Organic Molecules in Comet Hale -Bopp (C/1995 O1)
… of 1997. The following points summarize the highlights of this research project. (1) The capability of the BIMA Array to detect new cometary molecules has been established, with the discovery of HCO + in comet Hale-Bopp. (2) Millimeter wavelength interferometric maps of comet spectral line …
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Spatiotemporal excitation sequence manipulation and processing for Doppler ultrasound and pulse-echo sound speed imaging applications
… plane waves are coherently summed to generate high resolution images with relatively few transmissions, allowing for high frame rate acquisition. However, the vast majority of the research in plane wave based methods neglects the utility of the individually steered plane wave frames. In this …
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Characterization and modeling of the fundamental aspects of oil transport in the piston ring pack of internal combustion engines
… a diesel and a spark-ignition engine. Real time high resolution images of the ring pack oil distribution were acquired and analyzed for the entire range of operating conditions typically encountered by passenger car engines. Based on experimental observations, major oil flow patterns in the …
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Efficient seismic imaging with the double plane wave data
… role in hydrocarbon explorations. Obtaining high resolution images with accurate reflectivities and accurate positions of subsurface structures is the goal for exploration geophysicists. Reverse time migration (RTM), which solves the two-way wave equation, can resolve all wavefield …
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On the fundamental imaging-depth limit in two-photon microscopy
… one-photon techniques is that it can provide high-resolution images from very deep within living tissue. While imaging depths of 500 micron in brain tissue have become standard performance, larger depths have been inaccessible mainly due to the power limitation of current femto-second laser …
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A machine learning based method for sensitivity estimation for accelerated magnetic resonance spectroscopy imaging using phased array coils
… a poor trade-off between imaging speed and image resolution has stunted development of MRSI applications. A combination of many technological advancements is necessary to bring MRSI to its full potential; one advancement is an accelerated imaging technique known as parallel imaging. Parallel …
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Optical studies of super-collimation in photonic crystals
… These periodic structures of alternating high-to-low index of refraction materials allow the observation of peculiar effects, in particular, the propagation of optical beams without spatial spreading. This effect, called super-collimation (also known as self-collimation), allows …
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Development of an Active Vision System for the Remote Identification of Multiple Targets
… are used to detect and track targets at a low resolution, while perspective cameras mounted to pan-tilt stages are used to acquire high resolution images suitable for identifi cation. Five greedy-based scheduling policies have been developed and implemented to manage the > active system …
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Firmware Design and Testing for Data Handling and Control of Time Delay Integration Image Sensors in an Earth Observation Payload
… information which translates to a requirement of high-resolution Earth observation data. These high-resolution images tend to generate a lot of data which needs to be processed in a very short time. This high data rate problem is the focus of this work. This work tries to tackle this problem in …
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Three dimensional visualization through use of HoloLens
… scans. The goal of this project is to create high resolution images using late gadolinium enhancement (LGE) of myocardial scar. These images would be generated one of two ways: voxel-wise 3D scar rendering or surface projection of the scar. These images will be displayed using Microsoft's …
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