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 20 of 55 for “"tracking algorithms"”.
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A Comparison of Multiple-Model Target Tracking Algorithms
There are many multiple-model (MM) target-tracking algorithms that are available but there has yet to be a comparison that includes all of them. This work compares seven of the currently most popular MM algorithms in terms of performance, credibility, and computational complexity. The algorithms to …
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Tracking algorithms under boundary layer effects for free-space optical communications
… optical communication requires accurate tracking to maintain links. The tracking problem between an aircraft and satellite becomes more difficult with the introduction of a turret on the aircraft for increased field-of-regard. In the case of a hemispherical turret, the disrupted airflow …
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AN UNBIASED SOURCE LOCATION ALGORITHM AND PERFORMANCE SURFACE OF ZERO TRACKING ALGORITHMS
In this thesis, a new zero tracking algorithm to estimate the locations of directional sources in an unbiased manner is presented. The zeros of the system, which correspond to the sources' locations, are updated recursively taking into account the effect of receiver noise. A formula relating the …
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Development of a test suite for single object tracking algorithms in video
… as usual while a drone films them. Visual object tracking, enabling the drone to track the customer throughout the activity, is a primary obstacle in creating a viable autonomous videography service. FlyCam needs an object tracking algorithm which is accurate, robust, real-time, and requiring …
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Development of hybrid particle tracking algorithms and their applications in airflow measurement within an aircraft cabin mock-up
… indoor air quality problems. The Hybrid Particle Tracking Velocimetry (HPTV) system is aimed at fulfilling this need. It was developed based on existing Particle Tracking Velocimety (PTV) and Volumetric Particle Tracking Velocimetry (VPTV) techniques. The HPTV system requires three charge-coupled …
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UAV Simulation Environment for Autonomous Flight Control Algorithms
… with several path planning and trajectory tracking algorithms implemented. Emphasis is given to simulation of failures and other abnormal conditions, so that appropriate tools for failure detection, evaluation, and accommodation can be designed. The development of new path planning …
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Robotic Goal-Based Semi-Autonomous Algorithms Improve Remote Operator Performance
… determine if reliable goal-based semi-autonomous algorithms are able to improve remote operator performance or not. Two semi-autonomous algorithms were examined: visual servoing and visual dead reckoning. Visual servoing uses computer vision techniques to generate movement commands while using …
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Online multi-person tracking using feature-less location measurements
… presents a scalable real-time multi-object tracking system based on feature-less location measurements. The thesis introduces a two-stage object tracking algorithm along with a server infrastructure that allows users to view the tracking results live, replay old frames, or compute long-term …
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Impact of the boundary layer on pointing and tracking in airborne free-space laser communication links
… layer turbulence. This research investigated the tracking challenge using a focal plane array sensor with centroid and peak tracking algorithms. Also investigated was the use of a deformable mirror to recreate optical phase distortions from boundary layer turbulence. Experiments were conducted …
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Efficient feature detection using OBAloG: optimized box approximation of Laplacian of Gaussian
… algorithm performs better than leading feature tracking algorithms including SIFT and SURF in terms of speed and accuracy.
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An earth image simulation and tracking system for the Mars Laser Communication Demonstration
… an Earth-image simulation and investigated Earth-tracking algorithms for the Mars Laser Communication Demonstration (MLCD). The MLCD mission will demonstrate the feasibility of high-data-rate laser communications between a Mars orbiting satellite and an Earth ground station. One of the key …
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Joint Face Detection and Tracking in Three-Dimensional Space
Visual detection and tracking of faces in complex scenes is a very interesting and challenging problem. In general, real human-computer interaction scenarios present significant challenges to most face detection and tracking algorithms, for example, partially occluded and low-resolution faces, as …
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Computational image analysis of subcellular dynamics in time-lapse fluorescence microscopy
The use of image segmentation and motion tracking algorithms was adapted for analyzing time-lapse data of cells with fluorescently labeled protein. Performance metrics were devised and algorithm parameters were matched to hand-created ground-truth data. The performance of these algorithms in this …
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Modern Bayesian Object Tracking: Challenges and Solutions
Target tracking is a challenging problem with a wide range of applications such as surveillance, robotics, and autonomous vehicles. Recent years have seen significant progress in the field of object tracking; nonetheless, there are still numerous challenges that need to be addressed in modern …
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Design and optimization of an embedded machine learning image processing system with a Linux SOC for large-scale livestock tallying
… deploying machine learning models for livestock tracking and subsequent tallying on edge devices in remote areas. The resource demands of detection models typically necessitate cloud-based inference, which is impractical for remote livestock agricultural settings with limited infrastructure and …
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Peak power tracking for a solar buck charger
… and testing of a buck converter with peak power tracking. The peak power tracker uses a perturb and observe algorithm to actively track the solar panel's peak power point and a global sweep algorithm accounts for startup and multiple local maxima. The tracker takes the place of the current mode …
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Accelerating a Coupled SPH-FEM Solver through Heterogeneous Computing for use in Fluid-Structure Interaction Problems
… frequent re-meshing and additional free-surface tracking algorithms are non-trivial. This work continues and extends the earlier coupled 2D SPH-FEM approach of Yang et al. [1,2] by linking a double-precision GPU implementation of a 3D weakly compressible SPH formulation [3] with the open source …
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An experimental method for visualizing undrained shearing failure in a transparent soft clay surrogate
… effects. The thesis developed a procedure for tracking deformation in Laponite RD as a soft clay surrogate for the miniature shear vane and the T-bar, ball, and cone penetrometers and provided the first non-invasive in situ images of deformation patterns. Previous attempts to visualize the …
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Wireless sensor network implementations on a testbed platform
… efficient sleep control for application to the tracking problem, and diffusing point source localization and tracking. For each of these three problems work in the field is briefly examined before simulations and implementations are presented. Particular emphasis is placed on the tracking …
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Autonomous navigation and tracking of dynamic surface targets on-board a computationally impoverished aerial vehicle
… surface target. Image segmentation and target tracking algorithms are developed for the specific task of monitoring whales at sea. The computer vision algorithms' estimates prove to be accurate enough for quadrotor stabilization while being computationally fast enough to be processed on-board …
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