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Full-Text Articles in Engineering
Extending Multi-Beam Sonar With Structure From Motion Data Of Shorelines For Complete Pool Bathymetry Of Reservoirs, Izaak Brandt Cooper
Extending Multi-Beam Sonar With Structure From Motion Data Of Shorelines For Complete Pool Bathymetry Of Reservoirs, Izaak Brandt Cooper
Theses and Dissertations
Bathymetric mapping is an important tool for reservoir management, typically completed before reservoir construction. Historically, bathymetric maps were produced by interpolating between points measured at a relatively large spacing throughout a reservoir, typically on the order of a few, up to 10, meters or more depending on the size of the reservoir. These measurements were made using traditional survey methods before the reservoir was filled, or using sonar surveys after filling. Post-construction issues such as sedimentation and erosion can change a reservoir, but generating updated bathymetric maps is difficult as the areas of interest are typically in the sediment deltas …
Small-Target Detection And Observation With Vision-Enabled Fixed-Wing Unmanned Aircraft Systems, Hayden Matthew Morgan
Small-Target Detection And Observation With Vision-Enabled Fixed-Wing Unmanned Aircraft Systems, Hayden Matthew Morgan
Theses and Dissertations
This thesis focuses on vision-based detection and observation of small, slow-moving targets using a gimballed fixed-wing unmanned aircraft system (UAS). Generally, visual tracking algorithms are tuned to detect motion of relatively large objects in the scene with noticeably significant motion; therefore, applications such as high-altitude visual searches for human motion often ignore target motion as noise. Furthermore, after a target is identified, arbitrary maneuvers for transitioning to overhead orbits for better observation may result in temporary or permanent loss of target visibility. We present guidelines for tuning parameters of the Visual Multiple Target Tracking (Visual MTT) algorithm to enhance its …