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 10 of 10 for “"Underwater imaging"”.
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Investigations into Ultra-Low-Power Underwater Imaging
Imaging underwater environments is crucial to advancing our understanding of marine organisms, climate change, marine geology, aquaculture farming, and underwater archaeology. Despite significant advances in underwater imaging, scalable and longterm imaging of underwater environments is still an …
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Battery-Free Wireless Imaging of Underwater Environments
Imaging underwater environments is of great importance to marine sciences, ocean sustainability, climatology, defense, marine robotics, geology, space exploration, and global food security. Despite advances in underwater imaging, most of the ocean and marine organisms remain unobserved and …
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Digital holographic imaging of aquatic species
… develop and implement a digital holographic imaging (DHI) system, capable of capturing three-dimensional (3D) images of aquatic species. The images produced by this system are used in a non-intrusive manner to characterize the abundance, morphology and 3D location of the aquatic species. The …
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Deep learning of visual features with limited supervision.
… annotations is costly in fields like medical imaging and underwater imaging. This dissertation explores methods for learning deep visual features with limited human supervision, expanding deep learning’s applicability to diverse real-world tasks. We propose solutions in three key areas. First, …
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Large-area visually augmented navigation for autonomous underwater vehicles
… imagery constraints typical of autonomous underwater vehicles (AUVs) while exploiting the inertial sensor information that is routinely available on such platforms. We adopt a systems-level approach exploiting the complementary aspects of inertial sensing and visual perception from a …
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Large-area visually augmented navigation for autonomous underwater vehicles
… imagery constraints typical of autonomous underwater vehicles (AUVs) while exploiting the inertial sensor information that is routinely available on such platforms. We adopt a systems-level approach exploiting the complementary aspects of inertial sensing and visual perception from a …
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Wireless Systems for a Sustainable Future: From Battery-Free Subsea IoT to THz-Based Agriculture Monitoring
… ways to unlock new capabilities in underwater climate monitoring, food safety, and disaster response. The thesis introduces two novel technologies. The first technology enables long-term, ultra-low power ocean sensor networks for use in climate modeling, marine monitoring, and …
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Field deployable dynamic lighting system for turbid water imaging
… depths provide an ever changing and complex imaging environment. As scientists and researches strive to document and study more remote and optically challenging areas, specifically scatter-limited environments. There is a requirement for new illumination systems that improve both image …
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An investigation into the characteristics and sources of light emission at deep-sea hydrothermal vents
A spectral camera (ALISS - Ambient Light Imaging and Spectral System) was used to image ambient light from high-temperature vents at 9°N East Pacific Rise and the Juan de Fuca Ridge during 1997 and 1998 Alvin dive cruises. ALISS is a low-light digital camera with custom-designed optics. A set of …
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Cooperative localisation in underwater robotic swarms for ocean bottom seismic imaging.
… nodes, implemented by a swarm of Autonomous Underwater Vehicles (AUVs). In autonomous deployment of ocean-bottom seismic nodes, a swarm of sensor-equipped AUVs are deployed to achieve ocean-bottom seismic imaging through collaboration and communication. However, the severely limited bandwidth …