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 20 for “"Stereo Cameras"”.
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Semi-direct visual SLAM for stereo cameras: system design and validation
… vision, Visual-SLAM (VSLAM) that relies on cameras becomes a major topic. Specifically, stereo cameras can provide additional depth information along with regular RGB information. In this thesis, state-of-the-art VSLAM methodologies are reviewed and evaluated over standard vision benchmarks. …
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An Activity-Based Framework for Automated Placement and Configuration of Multiple Stereo Cameras
… quality of information depends on placement of stereo cameras and color constancy of scene appearance from multiple imaging devices. Thus, an important challenge in the deployment is the optimal placement of stereo cameras and color adjustments. Placement of stereo cameras directly impacts 3D …
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Information Theory for Arm Visuo-Motor Coordination
… vision system consisting of image boards and two stereo cameras. This engineering approach has been employed to test the algorithm which might share close features with the way that biological beings solve the same sensory-motor task.
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Multi-criteria design analysis of sensor systems for railway level crossings
… up to three sensor technologies such as LIDAR, stereo camera, and millimeter laser radar. We evaluate each sensor and find the best combination of multiple sensors according to a set of performance criteria. The analysis was conducted using empirical data of 1,800 high-risk level crossings in …
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Stereo vision and mapping with unsynchronized cameras
… map storage. It extends existing real-time stereo mapping systems by tolerating unsynchronized stereo cameras. Results indicate that synchronization allows the system to locate points significantly more accurately than the system without synchronization. When compared with a monocular …
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Dataset and Evaluation of Self-Supervised Learning for Panoramic Depth Estimation
… like LIDAR, or require precise calibration, like stereo cameras. These costs have given rise to attempts to detect depth from a monocular camera (a single camera). While this is possible, it is harder than LIDAR or stereo methods since depth can't be measured from monocular images, it has to be …
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A Framework for Human Body Tracking Using an Agent-based Architecture
… people or multiple people in front of single or stereo cameras. We employ the job-market model for agents' communication. In this dissertation, we will present several experiments in detail, which demonstrate the effectiveness of the agent-based tracking system. Per our research, the agents are …
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Solutions to Passageways Detection in Natural Foliage with Biomimetic Sonar Robot
… Different from man-made sensors, such as stereo cameras and LiDAR, bats' biosonar has much lower spatial resolution and sampling rates. Their biosonar is capable of reliably finding narrow gaps in foliage to serve as a passageway to fly through. To investigate the sensory information under …
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Terrain and Vehicle-Terrain Sensing and Estimation in Real-Time for Use in Autonomous Vehicles
… using a system of two Intel RealSense D405 stereo cameras. The rut depth can be assumed to be the same as the tire sinkage in this application and is then used to get the tire entry angle. The tire entry angle can then be used to further obtain the drawbar pull and the tractive effort. The …
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Evaluation of stereo matching for mobile platforms with applications for assisting the visually impaired
… and video content, along with the development of stereo cameras for mobile platforms, motivates the presented evaluation of stereo matching algorithms for mobile devices. This work investigates this potential for stereo matching on a mobile device for real-time applications, in terms of …
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Human-autonomy teaming for improved diver navigation
… specially designed underwater vehicles, or stereo cameras. This thesis proposes a diver navigation method exhibiting significantly improved accuracy over dead reckoning without relying on a surface presence, cameras, or fixed acoustic beacons. Specifically, we develop and evaluate the …
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Human-Autonomy Teaming for Improved Diver Navigation
… specially designed underwater vehicles, or stereo cameras. This thesis proposes a diver navigation method exhibiting significantly improved accuracy over dead reckoning without relying on a surface presence, cameras, or fixed acoustic beacons. Specifically, we develop and evaluate the …
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Stereo Vision Based Aerial Mapping Using GPS and Inertial Sensors
… systems requires visual data acquisition. A stereo vision system is ideal for such missions as it doubles as both an image acquisition device, and a range finding device. The 2D images captured with a stereo vision system can be mapped to three dimensional point clouds with reference to the …
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Data Acquisition and Processing Pipeline for E-Scooter Tracking Using 3d Lidar and Multi-Camera Setup
… ways, utilizing sensors such as monocular or stereo cameras, Light Detection and Ranging (LIDAR) sensors as well as Inertial Navigation systems (INS) systems. One relatively common method for solving DATMO and SLAM involves utilizing a 3D LIDAR with multiple monocular cameras in conjunction …
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Smart Environment Based On Real-Time Human Position Tracking For Remote Presence And Collaboration
… have created similar systems using multiple cameras, stereo cameras, accelerometers, and motion detectors. This report presents a platform to detect and track real-time locations of people present in buildings and map their location information into virtual models as avatars using …
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Development of a remotely-controlled electric vehicle with characterization of the ground grip
… will include scene understanding solely based on stereo cameras and integration between the visual information and the vehicle dynamic response captured by the vehicle controller . My research is focused on this application, and a considerable amount of energy through my PhD went to the …
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Canonical solution groups of a homomorphism : manipulator kinematics, nonparametric regression and distributed object systems
… Simultaneous calibration of a composition of stereo-camera and manipulator kinematic models is under-determined by equi-output parameter groups in the composition of stereo-camera and Denavit Hartenberg (DH) rnodels. An error measure for simultaneous calibration of a composition of models is …
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Self-Supervised Learning for Geometry
… We focus on an end-to-end mapping problem from stereo data in the first part of this thesis, namely Deep Stereo Matching. Stereo matching is one of the oldest problems in computer vision. Classical approaches to stereo matching typically rely on handcrafted features and a multiple-step solution. …
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On-orbit inspection of a rotating object using a moving observer
… unit, and a dense 3D visual sensor such as stereo cameras or LiDAR. The inspector trajectory is estimated in a manner which is independent of target motion, using a factor graph approach. Here, star tracker orientation measurements, gyroscope and acceleration measurements, and range and …
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3D SENSING APPROACHES FOR PRECISION AGRICULTURE: APPLICATIONS TO PLANT FEATURES CHARACTERIZATION AND TO WEED CONTROL IN MAIZE
… acquired by Time-of-Flight (ToF) sensors and stereo cameras for agronomic measurements. The main objectives are the characterization of plant geometric properties, biomass estimation with non-destructive methods and discrimination between crops and weeds for use in precision agriculture …