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 43 for “"Collision detection"”.
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Improved collision detection in StarLogo Nova
… explores the problem of needing more accurate collision detection in StarLogo Nova while maintaining reasonable performance. Three new collision detection systems for StarLogo Nova are developed and evaluated. Compared to the spheres used to perform collision checks in the current system, the …
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Efficient collision detection for real-time simulated environments
Thesis (M.S.)--Massachusetts Institute of Technology, Program in Media Arts & Sciences, 1994.
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Multiple Bounding Boxes Algorithm in Collision Detection and Its Performances in Sequential VS CUDA Parallel Processing
<p>The traditional method for detecting collisions in a 2D computer game uses a axisaligned bounding box around each sprite, and checks to determine if the bounding boxes overlap periodically. Using this single bounding box method may result in a large amount of pixel intersection tests, since a …
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System for Collision Detection Between Deformable Models Built on Axis Aligned Bounding Boxes and GPU Based Culling
Collision detection between deforming models is a difficult problem for collision detection systems to handle. This problem is even more difficult when deformations are unconstrained, objects are in close proximity to one another, and when the entity count is high. We propose a method to perform …
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A haptic stencil for manufacturing applications
… consists of a 5 DOF haptic device and an anti-collision algorithm that acts as a geometric stencil and can be used for a variety of applications ranging from training to rapid prototyping and manufacturing. Online manipulation of a three-axis desktop milling machine was established using this …
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Physically accurate collisions in StarLogo Nova
… elastic, inelastic, or partially inelastic collisions. However, StarLogo's current collision detection system relies on detecting overlapping objects after they have already collided, so it cannot simulate such collisions. We create a new continuous-time collision detection algorithm which …
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A general robot path verification simulation system: GRPVSS
Collision-detection is a critical task for off-line robot path planning. A general robot path verification simulation system, GRPVSS, applicable for all industrial robots with open-looped links, is created to verify the intended robot path. The manipulator and obstacles are modeled by convex …
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Web-based modelling with applications to surgical training
… faces a number of challenges including fast collision detection and real-time deformable modelling. In this thesis, these problems are addressed and solutions are given to meet these challenges. In collaboration with the neurosurgeons at Leeds General Infirmary, the use of web-based VR to …
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Industrial automation and control in hazardous nuclear environments
… of topics related to industrial automation: 1. Collision detection and object recognition based on user-specified parameters. 2. Joint torque monitoring 3. Online motion planning for contact tasks 4. Object-in-hand industrial manufacturing 5. Grasping and handling of nuclear material 6. Software …
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The development of the control for an urban search and rescue robot manipulator arm
… teleoperative interfaces as well as collision detection and proceeds to discuss the development of the control for the RATEL manipulator.
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Scalable Methods for Processing Massive Geometric Meshes
… operations such as view-dependent rendering and collision detection.
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Frequency-modulated continuous-wave radar processing fundamentals
… radar. FMCW radars have applications such as collision detection and assisted cruise control in modern vehicles, due to their ability to be manufactured as low-power, single-chip systems. We will discuss the use of a two-dimensional fast Fourier transform to efficiently compute the …
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Robust Online Trajectory Prediction for Non-cooperative Small Unmanned Aerial Vehicles
… trajectory prediction methods for UAVs for collision detection and trajectory planning. The existing techniques suffer from problems such as inadequate uncertainty quantification of predicted trajectories. This work adopts particle filters together with Löwner-John ellipsoid to approximate …
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Low cost integrated substation protection and control system
… IEEE '802.3 Carrier Sense Multiple Accesses/Collision Detection (CSMA/CD) protocol (Ethernet). Data Acquisition and control is done directly so that it could be used on a range of different manufacturers' equipment. These capabilities make this development to act as a system integrator for …
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Precision Navigation for Indoor Mobile Robots
… on the OctoMap library was also developed for collision detection. Geometric parameterizations for path segments were developed for use by those components. The precision navigation system was evaluated using a physical robot, CWRU's HARLIE, as well as in a Gazebo simulation. This precision …
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An enhance framework on hair modeling and real-time animation
… of the U-shape technique, we also adapt the collision detection and response mechanism in the former method. There are collisions between hair strips and other objects, e.g. scalp and shoulder, and the self-collisions of hair. Finally, a hair modeling function that is capable of modeling …
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SCRIPTS : on the description of computer animated images
… library, a spline library, and simple mechanics, collision detection and inverse kinematics functions.
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Surpassing Local Optimality in Geometry Processing
… mesh quality enhancement, and algebraic collision detection. With these tools, we manage to avoid shallower local minima and sometimes to reach or even surpass globally optimal solutions. We conclude with some principles by which these methods can be generally applied to other parts of …
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Consensus and collision detectors in wireless ad hoc networks
… we augment nodes with receiver-side collision detectors and present a new classification of these detectors in terms of accuracy and completeness. This classification is motivated by practical realities and allows us to determine, roughly speaking, how much collision detection …
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