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 19 of 19 for “"robust tracking"”.
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Robust tracking control and signal estimation for networked control systems
… problems are investigated in the control areas: Tracking Control (Chapter 2–Chapter 5) and Signal Estimation (Chapter 6–Chapter8). With the fact that more than 90% of control loops in industry are controlled by proportional-integral-derivative (PID) controllers, the first work in this thesis aims …
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Vision and Learning for Intelligent Human -Computer Interaction
… multiple visual cues integration for robust tracking, and learning motion models for capturing articulated hand motion. Besides, this dissertation describes a novel statistical learning method, the Discriminant-EM (D-EM) algorithm, in the framework of self-supervised learning paradigm. …
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Adaptive detection and tracking using multimodal information
… areas: adaptive detection and adaptive object tracking in automated vision scenarios. The work on adaptive object detection explores a new paradigm in dynamic parameter selection, by selecting thresholds for object detection to maximise agreement between pairs of sources. Object tracking, a …
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Obstacle detection and tracking in an urban environment Using 3D LiDAR and a Mobileye 560
… a sensor fusion algorithm which combines tracking information from a Mobileye 560 and a Velodyne HDL-64E. The Velodyne tracking module first extracts obstacles by removing the ground plane points and then segmenting the remaining points using Euclidean Cluster Extraction. The Velodyne …
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Real-time rendering for autostereoscopic display technology
… head motions while watching the display. New facetracking technology also provides more robust tracking and the potential for new tracking features while reducing system requirements. The entire system can also now be run by only one PC (rather than the previous two SGI workstations).
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Development of a Multi-Frequency Adaptive Kalman Filter Based Tracking Loop for an Ionospheric Scintillation Monitoring Receiver
… develops a combined GPS L1, L2C and L5 KF based tracking loop by exploiting the dispersive nature of the ionosphere and signal structure of the GPS signals. This results in a robust tracking loop suitable for a scintillation monitoring receiver. It also incorporates an adaptive algorithm that has …
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Incorporating thruster dynamics in the control of an underwater vehicle
… and comparison is based on observed vehicle tracking performance. The incorporation of thruster dynamics is shown to significantly improve vehicle tracking performance. Superior, robust tracking performance with significant model uncertainty is demonstrated in the application of the adaptive …
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High-performance torque control of switched reluctance motor
… approaches have been explored for phase torque tracking control. Advanced model-free and model-based nonlinear control techniques have been investigated. Iterative learning control (ILC) is used for constant torque reference where phase torque references are periodic in rotor position. In ILC …
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Improved HVdc dynamic performace via phase locking to virtual Thévenin voltage
… PLL method, it is shown that the enhanced tracking ability of the IC-PLL improves the dynamic performance of the HVdc system. The thesis shows that these benefits accrue in LCC-HVdc systems as well as VSC-HVdc systems. In the LCC-HVdc system, a frequency scan of the system shows the use of …
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Development of technologies for low-cost oceanographic unmanned aeronautical vehicles
… measurement of optimality.<br/>Two novel path tracking algorithms have been presented. The first controls the derivative of heading rate to command an achievable trajectory. The second controls the aircraft's closing speed on the path by adjusting bank angle. The latter algorithm achieved a …
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A 4D photogrammetric system for studying flow-like landslides
… experiments. The software incorporates a robust tracking algorithm, enabling the calculation of flow velocity vectors at the single-particle or grain scale with high spatial and temporal resolution, even amid the fast and tumbling flows. We begin by describing the development of the …
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Robust control of nonlinear systems in the presence of uncertainties
… achieve some prespecified performance. Different robustness measure bounds and synthesis techniques have been developed. A promising area is the so-called deterministic theory, where the uncertainties incorporated in the system are described only in terms of the bounds on their possible size, and …
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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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Object Tracking: Appearance Modeling And Feature Learning
<p>Object tracking in real scenes is an important problem in computer vision due to increasing usage of tracking systems day in and day out in various applications such as surveillance, security, monitoring and robotic vision. Object tracking is the process of locating objects of interest in every …
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Automated Progress Monitoring Using Mixed Reality
… site. The main challenge of these systems is the tracking of the pose of the camera to achieve accurate alignment between the 3D design model and the real-world scene. Methods for estimating the user’s pose rely on a) tags on each target of interest, which require additional time and cost for …
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A vision based control system for autonomous rendezvous and capture of a Mars Orbital Sample
… project is to design and develop a vision-based tracking and capture system using the SPHERES test bed. The proposed Mars Orbital Sample Return (MOSR) system uses a SPHERES satellite to emulate the combined motion of the capture satellite and the OS. The key elements of the system are: (1) a …
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A Multi-Constellation Multi-Frequency GNSS Software Receiver Design for Ionosphere Scintillation Studies
… of this work is the implementation of a Vector tracking loop (VTL) for robust carrier tracking. The VTL is developed based on the extended Kalman filter (EKF) with adaptive covariance matrices. Both scalar tracking loop (STL) and VTL are implemented. Once an error in the scalar loop is detected, …
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Some tracking problems for aerospace models with input constraints
We study tracking controller design problems for key models of planar vertical takeoff and landing (PVTOL) aircraft and unmanned air vehicles (UAVs). The novelty of our PVTOL work is the global boundedness of our controllers in the decoupled coordinates, the positive uniform lower bound on the …
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New contributions on motion estimation through optical flow techniques applied to cardiac magnetic resonance imaging = Nuevas contribuciones en estimación de movimiento mediante técnicas de flujo óptico aplicado a imagen de resonancia magnética cardiaca
… myocardial intensity heterogeneity, including tracking the dark tag lines as intensity minima, employing optical flow or using harmonic phase (HARP). The current thesis aims to contribute with new algorithms for motion estimation of cardiac magnetic resonance imaging sequences, based on optical …