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 15 of 15 for “"Grid Map"”.
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Collision Avoidance for Automated Vehicles Using Occupancy Grid Map and Belief Theory
This thesis discusses occupancy grid map, collision avoidance system and belief theory, and propose some of the latest and the most effective method such as predictive occupancy grid map, risk evaluation model and OGM role in the belief function theory with the approach of decision uncertainty …
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Mathematical Modelling of Animal Navigation
… skill is hypothesised to be an ability to use a map and compass. Animals are known to use a variety of compasses, such as the sun and the magnetic field vector, however, the map mechanism is still poorly understood. This thesis focuses on grid map hypotheses and how they might be experimentally …
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Determining optimal flight paths for cellular network connectivity for the transmission of real-time physiological data in support of big data analytics during airborne critical care transport
… consists of two main concepts: coverage map generation, and path planning. Coverage map generation creates a grid map of the total planning space that contains coverage information for each grid point. Coverage is calculated based on geographical and technical information regarding each …
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Fast and optimal pathfinding
… well suited to speeding up pathfinding search on grid-maps of the type widely employed in computer games and robotics. Moreover, our work is largely orthogonal with a wide range of efficiency-improving techniques that have been previously described in the academic literature. We investigate a …
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Fast and optimal pathfinding
… well suited to speeding up pathfinding search on grid-maps of the type widely employed in computer games and robotics. Moreover, our work is largely orthogonal with a wide range of efficiency-improving techniques that have been previously described in the academic literature. We investigate a …
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Enhancements to Hierarchical Pathfinding Algorithms
… we study the problem of pathfinding in static grid-based maps. We apply the approach of abstraction and refinement. We abstract the grid map into a graph representation, and use the classic A* algorithm to search for a path in the abstract space, and then refine it into low-level path.</p> …
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Drivable Area Segmentation on LiDAR Range View Images for Autonomous Driving
… of the proposed segmentation pipeline is a grid map that applies a perspective transformation to the model's outputs, converting the front-facing view into a bird’s-eye-view representation. Road-related classes detected by the model are then aggregated over consecutive frames, resulting in a …
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Learning Birds-Eye View Representations for Autonomous Driving
… as well the use of detailed high-resolution maps, which together allow a vehicle to navigate its surroundings effectively. Often, however, one or both of these resources may be unavailable, whether due to cost, sensor failure, or the need to operate in an unmapped environment. The aim of this …
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Autonomous Robotic Strategies for Urban Search and Rescue
… for urban search and rescue (USAR) which are map-based semi-autonomous robot navigation and fully-autonomous robotic search, tracking, localization and mapping (STLAM) using a team of robots. Since the prerequisite for these solutions is accurate robot localization in the environment, this …
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Mutual information-based gradient-ascent control for distributed robotics
… a range sensor and tasked to build an occupancy grid map. The desired explorative behaviors of the robot for occupancy grid mapping highlight the correlation between the information content and the spatial realization of the robot's range measurements. We prove that any occupancy grid controller …
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Hiding in plain sight: unveiling cryptic diversity and patterns in bumble bees
… of nearly all species of bumble bees are well mapped and described. In addition, the natural history, colony structure and social behavior of bumble bees are well documented and a well-supported phylogeny of the ~250 species currently recognized within the genus has been constructed. Yet …
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Mechanisms underlying spatial navigation
… First, I investigate the information conveyed by grid cells, whose firing fields tile the environment in a hexagonal grid. In doing so, they are thought to provide a static map of space. Current models of navigation propose that this static grid cell map is used to support navigation behaviours. …