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Dissertations / Theses on the topic 'Vision based sensors'

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Published: 4 June 2021

Last updated: 16 February 2022

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1

Sharkasi, Adam Tawfik. "Stereo Vision Based Aerial Mapping Using GPS and Inertial Sensors." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/32263.

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The robotics field has grown in recent years to a point where unmanned systems are no longer limited by their capabilities. As such, the mission profiles for unmanned systems are becoming more and more complicated, and a demand has risen for the deployment of unmanned systems into the most complex of environments. Additionally, the objectives for unmanned systems are once more complicated by the necessity for beyond line of sight teleoperation, and in some cases complete vehicle autonomy. Such systems require adequate sensory devices for appropriate situational awareness. Additionally, a larg

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2

Bowers, Roshawn Elizabeth. "Estimation algorithm for autonomous aerial refueling using a vision based relative navigation system." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2700.

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A new impetus to develop autonomous aerial refueling has arisen out of the growing demand to expand the capabilities of unmanned aerial vehicles (UAVs). With autonomous aerial refueling, UAVs can retain the advantages of being small, inexpensive, and expendable, while offering superior range and loiter-time capabilities. VisNav, a vision based sensor, offers the accuracy and reliability needed in order to provide relative navigation information for autonomous probe and drogue aerial refueling for UAVs. This thesis develops a Kalman filter to be used in combination with the VisNav sensor to imp

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Yu, Honglu. "Development of vision-based inferential sensors for process monitoring and control /." *McMaster only, 2003.

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4

Rubtsov, Vasily. "A high speed scanning system for vision based navigation/control of mobile robots." Thesis, De Montfort University, 1998. http://hdl.handle.net/2086/10684.

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One of the main problems in the design of mobile robots is the development of creating smart integrated information systems. These systems may include different type of sensors. Usually a CeD vision system is a necessary part for these systems. This thesis considers the design of a fast mechanical scanning system for a CCD vision system and the synthesis of the optimal control for this system. The mathematical model of the transport subsystem for mobile robots subjected to an external disturbance is created. The correctness of this model is proved on the base of simulation and experimental res

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Haessig, Germain. "Neuromorphic computation using event-based sensors : from algorithms to hardware implementations." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS422/document.

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Cette thèse porte sur l’implémentation d’algorithmes événementiels, en utilisant, dans un premier temps, des données provenant d’une rétine artificielle, mimant le fonctionnement de la rétine humaine, pour ensuite évoluer vers tous types de signaux événementiels. Ces signaux événementiels sont issus d’un changement de paradigme dans la représentation du signal, offrant une grande plage dynamique de fonctionnement, une résolution temporelle importante ainsi qu’une compression native du signal. Sera notamment étudiée la réalisation d’un dispositif de création de cartes de profondeur monoculaires

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Cheng, Yongqiang. "Wireless mosaic eyes based robot path planning and control : autonomous robot navigation using environment intelligence with distributed vision sensors." Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/4421.

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As an attempt to steer away from developing an autonomous robot with complex centralised intelligence, this thesis proposes an intelligent environment infrastructure where intelligences are distributed in the environment through collaborative vision sensors mounted in a physical architecture, forming a wireless sensor network, to enable the navigation of unintelligent robots within that physical architecture. The aim is to avoid the bottleneck of centralised robot intelligence that hinders the application and exploitation of autonomous robot. A bio-mimetic snake algorithm is proposed to coordi

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7

Dippold, Amanda. "Vision-Based Obstacle Avoidance for Multiple Vehicles Performing Time-Critical Missions." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/27830.

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This dissertation discusses vision-based static obstacle avoidance for a fleet of nonholonomic robots tasked to arrive at a final destination simultaneously. Path generation for each vehicle is computed using a single polynomial function that incorporates the vehicle constraints on velocity and acceleration and satisfies boundary conditions by construction. Furthermore, the arrival criterion and a preliminary obstacle avoidance scheme is incorporated into the path generation. Each robot is equipped with an inertial measurement unit that provides measurements of the vehicleâ s position and vel

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Isoz, Wilhelm. "Calibration of Multispectral Sensors." Thesis, Linköping University, Department of Electrical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5202.

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<p>This thesis describes and evaluates a number of approaches and algorithms for nonuniform correction (NUC) and suppression of fixed pattern noise in a image sequence. The main task for this thesis work was to create a general NUC for infrared focal plane arrays. To create a radiometrically correct NUC, reference based methods using polynomial approximation are used instead of the more common scene based methods which creates a cosmetic NUC.</p><p>The pixels that can not be adjusted to give a correct value for the incomming radiation are defined as dead. Four separate methods of identifying d

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Everding, Lukas [Verfasser], Jörg [Akademischer Betreuer] Conradt, Jörg [Gutachter] Conradt, and Darius [Gutachter] Burschka. "Event-based Depth Reconstruction Using Stereo Dynamic Vision Sensors / Lukas Everding ; Gutachter: Jörg Conradt, Darius Burschka ; Betreuer: Jörg Conradt." München : Universitätsbibliothek der TU München, 2018. http://d-nb.info/1178672212/34.

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10

Zhou, Dingfu. "Vision-based moving pedestrian recognition from imprecise and uncertain data." Thesis, Compiègne, 2014. http://www.theses.fr/2014COMP2162/document.

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La mise en oeuvre de systèmes avancés d’aide à la conduite (ADAS) basée vision, est une tâche complexe et difficile surtout d’un point de vue robustesse en conditions d’utilisation réelles. Une des fonctionnalités des ADAS vise à percevoir et à comprendre l’environnement de l’ego-véhicule et à fournir l’assistance nécessaire au conducteur pour réagir à des situations d’urgence. Dans cette thèse, nous nous concentrons sur la détection et la reconnaissance des objets mobiles car leur dynamique les rend plus imprévisibles et donc plus dangereux. La détection de ces objets, l’estimation de leurs p

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Benlamri, Rachid. "A multiple-sensor based system for image inspection." Thesis, University of Manchester, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307427.

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Marbán, González Arturo. "Vision based sensor substitution in robotic assisted surgery." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/664614.

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Perceiving and understanding the world represents a long-term goal in the field of Artificial Intelligence (AI). In recent years, advances in the field of Machine Learning (ML), and specifically in Deep Learning (DL), have led to the development of powerful models based on Deep Neural Networks (DNN) capable of interpreting high dimensional data, leading to higher performance in perception related tasks. DNNs designed in a Supervised Learning (SL) setting, such as Convolutional Neural Networks (CNN) and Long-Short Term Memory (LSTM) networks, greatly contribute to the state of the art in image

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Hamid, Gabriel. "A design for a vision-based velocity sensor." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386618.

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Dalkic, Yurdaer, and Hadi Deknache. "A Self-policing Smart Parking Solution." Thesis, Malmö universitet, Fakulteten för teknik och samhälle (TS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20898.

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With the exponential growth of vehicles on our streets, the need for finding an unoccupied parking spot today could most of the time be problematic, but even more in the coming future. Smart parking solutions have proved to be a helpful approach to facilitate the localization of unoccupied parking spots. In many smart parking solutions, sensors are used to determine the vacancy of a parking spot. The use of sensors can provide a highly accurate solution in terms of determining the status of parking lots. However, this is not ideal from a scalability point of view, since the need for installing

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Stauch, Sebastian. "A Vision Based Sensor System For Spacecraft Relative Navigation." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-60551.

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Docking is one of the crucial key elements in many aerospace applications and missions where despite all endeavors and precautions accidents and incidents occur far too often. Those events can lead in the worst case scenario to a total loss of the space system and payload. To better understand, manage and control those situations and to test and simulate the docking process between two spacecrafts, the space maneuvering and docking facility has been built and developed by the chair of aerospace information technology at the university of Würzburg. The facility consists out of several floating

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Garner, Harry Douglas Jr. "Development of a real-time vision based absolute orientation sensor." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17022.

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Bui, Manh-Tuan. "Vision-based multi-sensor people detection system for heavy machines." Thesis, Compiègne, 2014. http://www.theses.fr/2014COMP2156/document.

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Ce travail de thèse a été réalisé dans le cadre de la coopération entre l’Université de Technologie de Compiègne (UTC) et le Centre Technique des Industries Mécaniques (CETIM). Nous présentons un système de détection de personnes pour l’aide à la conduite dans les engins de chantier. Une partie du travail a été dédiée à l’analyse du contexte de l’application, ce qui a permis de proposer un système de perception composé d’une caméra monoculaire fisheye et d’un Lidar. L’utilisation des caméras fisheye donne l’avantage d’un champ de vision très large avec en contrepartie, la nécessité de gérer le

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Lundell, Niklas. "A vision based on surveillance system using a wireless sensor network." Thesis, KTH, Reglerteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105151.

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The aim of this thesis project is to implement a vision based surveillance system in a wireless sensor network running the Contiki operating system. After a comparative review of experimental cameras the decision fell on the Cmucam3. Hardware and software to integrate the camera with a Tmote Sky mote were created. In this way, the camera can be controlled with the Contiki operation system and images can be transferred to the sensors memory for further processing and forwarding to other network nodes. Due to the lack of memory on the sensor nodes, the prospect of image compression was investiga

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Clanton, Joshua M. Bevly David M. Hodel A. Scottedward. "GPS and inertial sensor enhancements for vision-based highway lane tracking." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Theses/CLANTON_JOSHUA_8.pdf.

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Sabiron, Guillaume. "Synthèse d’une solution GNC basée sur des capteurs de flux optique bio-inspirés adaptés à la mesure des basses vitesses pour un atterrissage lunaire autonome en douceur." Thesis, Toulouse, ISAE, 2014. http://www.theses.fr/2014ESAE0038/document.

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Dans cette thèse, nous nous intéressons au problème de l’atterrissage lunaire autonome et nous proposons une méthode innovante amenant une alternative à l’utilisation de capteurs classiques qui peuvent se révéler encombrants, énergivores et très onéreux.La première partie est consacrée au développement et à la construction de capteurs de mouvement inspirés de la vision des insectes volants et mesurant le flux optique.Le flux optique correspond à la vitesse angulaire relative de l’environnement mesurée par la rétine d’un agent. Dans un environnement fixe, les mouvements d’un robot génèrent un f

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Klement, Martin. "Development and analysis of an absolute three degree of freedom vision based orientation sensor." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/16447.

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Leishman, Robert C. "A Vision-Based Relative Navigation Approach for Autonomous Multirotor Aircraft." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3784.

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Autonomous flight in unstructured, confined, and unknown GPS-denied environments is a challenging problem. Solutions could be tremendously beneficial for scenarios that require information about areas that are difficult to access and that present a great amount of risk. The goal of this research is to develop a new framework that enables improved solutions to this problem and to validate the approach with experiments using a hardware prototype. In Chapter 2 we examine the consequences and practical aspects of using an improved dynamic model for multirotor state estimation, using only IMU measu

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Stepanyan, Vahram. "Vision Based Guidance and Flight Control in Problems of Aerial Tracking." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/28659.

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The use of visual sensors in providing the necessary information for the autonomous guidance and navigation of the unmanned-air vehicles (UAV) or micro-air vehicles (MAV) applications is inspired by biological systems and is motivated first of all by the reduction of the navigational sensor cost. Also, visual sensors can be more advantageous in military operations since they are difficult to detect. However, the design of a reliable guidance, navigation and control system for aerial vehicles based only on visual information has many unsolved problems, ranging from hardware/software development

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Huttunen, S. (Sami). "Methods and systems for vision-based proactive applications." Doctoral thesis, Oulun yliopisto, 2011. http://urn.fi/urn:isbn:9789514296536.

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Abstract Human-computer interaction (HCI) is an integral part of modern society. Since the number of technical devices around us is increasing, the way of interacting is changing as well. The systems of the future should be proactive, so that they can adapt and adjust to people’s movements and actions without requiring any conscious control. Visual information plays a vital role in this kind of implicit human-computer interaction due to its expressiveness. It is therefore obvious that cameras equipped with computing power and computer vision techniques provide an unobtrusive way of analyzing h

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Ahn, Hyungil 1976. "Vision-based estimation and control of airdrop vehicles for aerial deployment of sensor networks." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/17929.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.<br>Includes bibliographical references (leaves 141-142).<br>Recent experiences indicate there are limitations to the surveillance capability of high-value long-distance standoff ISR (Intelligence, Surveillance, Reconnaissance) platforms such as the latest observation satellites and unmanned aircraft. The high-tech systems in the platforms are often influenced by weather conditions or defeated by low-tech adversaries such as foliage, caves and concealment. These limitations indicate that close-in, on-th

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Chow, Khin Choong. "Fusion of images from Dissimilar Sensor systems /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Dec%5FChow.pdf.

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Thesis (M.S. in Combat Systems Technology)--Naval Postgraduate School, Dec. 2004.<br>Thesis Advisor(s): Monique P. Fargues, Alfred W. Cooper. Includes bibliographical references (p. 73-75). Also available online.

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Hwangbo, Myung. "Vision-Based Navigation for a Small Fixed-Wing Airplane in Urban Environment." Research Showcase @ CMU, 2012. http://repository.cmu.edu/dissertations/201.

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An urban operation of unmanned aerial vehicles (UAVs) demands a high level of autonomy for tasks presented in a cluttered environment. While fixed-wing UAVs are well suited for long-endurance missions at a high altitude, enabling them to navigate inside an urban area brings another level of challenges. Their inability to hover and low agility in motion cause more difficulties on finding a feasible path to move safely in a compact region, and the limited payload allows only low-grade sensors for state estimation and control. We address the problem of achieving vision-based autonomous navigation

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Story, David Lee Jr. "Autonomous Multi-Sensor and Web-Based Decision Support for Crop Diagnostics in Greenhouse." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/306925.

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An autonomous machine vision guided plant sensing and monitoring system was designed and constructed to continuously monitor plant related features: color (red-green-blue, hue-saturation-luminance, and color brightness), morphology (top projected canopy area), textural (entropy, energy, contrast, and homogeneity), Normalized Difference Vegetative Index (NDVI) (as well as other similar indices from the color and NIR channels), and thermal (plant and canopy temperature). Several experiments with repeated water stress cycles, using the machine vision system, was conducted to evaluate the machine

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Svensson, August. "Range-based Wireless Sensor Network Localization for Planetary Rovers." Thesis, Luleå tekniska universitet, Rymdteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83213.

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Obstacles faced in planetary surface exploration require innovation in many areas, primarily that of robotics. To be able to study interesting areas that are by current means hard to reach, such as steep slopes, ravines, caves andlava tubes, the surface vehicles of today need to be modified or augmented. Oneaugmentation with such a goal is PHALANX (Projectile Hordes for AdvancedLong-term and Networked eXploration), a prototype system being developed atthe NASA Ames Research Center. PHALANX uses remote deployment of expendablesensor nodes from a lander or rover vehicle. This enables in-situ mea

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Eriksson, Rickard. "Deep Reinforcement Learning Applied to an Image-Based Sensor Control Task." Thesis, Linköpings universitet, Informationskodning, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-177316.

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An intelligent sensor system has the potential of providing its operator with relevant information, lowering the risk of human errors, and easing the operator's workload. One way of creating such a system is by using reinforcement learning, and this thesis studies how reinforcement learning can be applied to a simple sensor control task within a detailed 3D rendered environment. The studied agent controls a stationary camera (pan, tilt, zoom) and has the task of finding stationary targets in its surrounding environment. The agent is end-to-end, meaning that it only uses its sensory input, in t

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Penin, Bryan. "Contributions to optimal and reactive vision-based trajectory generation for a quadrotor UAV." Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1S101/document.

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La vision représente un des plus importants signaux en robotique. Une caméra monoculaire peut fournir de riches informations visuelles à une fréquence raisonnable pouvant être utilisées pour la commande, l’estimation d’état ou la navigation dans des environnements inconnus par exemple. Il est cependant nécessaire de respecter des contraintes visuelles spécifiques telles que la visibilité de mesures images et les occultations durant le mouvement afin de garder certaines cibles visuelles dans le champ de vision. Les quadrirotors sont dotés de capacités de mouvement très réactives du fait de leur

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Veras-Jorge, Eduardo J. "Design and implementation of a hard real-time telerobotic control system using sensor-based assist functions." [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002673.

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Keeratipranon, Narongdech. "Robot navigation in sensor space." Queensland University of Technology, 2009. http://eprints.qut.edu.au/29316/.

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This thesis investigates the problem of robot navigation using only landmark bearings. The proposed system allows a robot to move to a ground target location specified by the sensor values observed at this ground target posi- tion. The control actions are computed based on the difference between the current landmark bearings and the target landmark bearings. No Cartesian coordinates with respect to the ground are computed by the control system. The robot navigates using solely information from the bearing sensor space. Most existing robot navigation systems require a ground frame (2D Cartesian

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Velandia, Henry Roncancio. "Object detection and classication in outdoor environments for autonomous passenger vehicle navigation based on Data Fusion of Articial Vision System and LiDAR sensor." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-24072016-152124/.

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This research project took part in the SENA project (Autonomous Embedded Navigation System), which was developed at the Mobile Robotics Lab of the Mechatronics Group at the Engineering School of São Carlos, University of São Paulo (EESC - USP) in collaboration with the São Carlos Institute of Physics. Aiming for an autonomous behavior in the prototype vehicle this dissertation focused on deploying some machine learning algorithms to support its perception. These algorithms enabled the vehicle to execute articial-intelligence tasks, such as prediction and memory retrieval for object classicatio

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Castro, André Luiz Figueiredo de. "Uma Nova Abordagem para Identificação e Reconhecimento de Marcos Naturais Utilizando Sensores RGB-D." Universidade Federal da Paraíba, 2017. http://tede.biblioteca.ufpb.br:8080/handle/tede/9238.

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Submitted by Fernando Souza (fernandoafsou@gmail.com) on 2017-08-10T11:47:56Z No. of bitstreams: 1 arquivototal.pdf: 11498612 bytes, checksum: 9182e9402b0905c4209bc405c726f8cc (MD5)<br>Made available in DSpace on 2017-08-10T11:47:56Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 11498612 bytes, checksum: 9182e9402b0905c4209bc405c726f8cc (MD5) Previous issue date: 2017-02-17<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>With the advance in the research of mobile robots localization algorithms, the need for natural landmark identification and recognition has in

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Olgemar, Markus. "Camera Based Navigation : Matching between Sensor reference and Video image." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15952.

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<p>an Internal Navigational System and a Global Navigational Satellite System (GNSS). In navigational warfare the GNSS can be jammed, therefore are a third navigational system is needed. The system that has been tried in this thesis is camera based navigation. Through a video camera and a sensor reference the position is determined. This thesis will process the matching between the sensor reference and the video image.</p><p>Two methods have been implemented: normalized cross correlation and position determination through a homography. Normalized cross correlation creates a correlation matrix.

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Lin, Jiun-Shian. "Applying sensory distortion devices in artistic production : practice-based studies of creating artefacts with perceptual devices which confuse artists' vision and kinesthesis." Thesis, University of Newcastle upon Tyne, 2017. http://hdl.handle.net/10443/3760.

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When I was an art school student, I was trained to pursue the likeness of subjects in all my artworks. This practice-based research explores alternative forms of self-expression in art practice. The exploration starts by questioning the relationship between perceptual devices, artists’ perceptions and artistic production. Most perceptual devices are designed to enhance artists’ sensory capabilities and facilitate the creation of art. Their success is often based on enabling artists to achieve a likeness of the subject drawn or making the creation of artefacts easier. My research focuses on inv

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Petit, Damien. "Analysis of sensory requirement and control framework for whole body embodiment of a humanoid robot for interaction with the environment and self." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS285.

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Les substituts de robot humanoïde promettent de nouvelles applications dans le domaine des interactions homme-robot et la robotique d’assistance. Cependant, l’incarnation de corps entier pour la téléopération ou téléprésence avec des avatars de robots mobiles est encore loin d’être pleinement exploré et compris. Dans cette thèse, nous nous concentrons sur l’exploration du sentiment d’incarnation quand on navigue et interagit avec l’environnement ou avec soi-même par l’intermédiaire d’un robot humanoïde. Dans un premier temps, nous montrons une architecture de contrôle conçu pour réaliser des s

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Shahbazi, Mozhdeh. "On precise three-dimensional environment modeling via UAV-based photogrammetric systems." Thèse, Université de Sherbrooke, 2016. http://hdl.handle.net/11143/9439.

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Abstract : Images acquired from unmanned aerial vehicles (UAVs) can provide data with unprecedented spatial and temporal resolution for three-dimensional (3D) modeling. Solutions developed for this purpose are mainly operating based on photogrammetry concepts, namely UAV-Photogrammetry Systems (UAV-PS). Such systems are used in applications where both geospatial and visual information of the environment is required. These applications include, but are not limited to, natural resource management such as precision agriculture, military and police-related services such as traffic-law enforcement,

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Stone, David L. "The Application of Index Based, Region Segmentation, and Deep Learning Approaches to Sensor Fusion for Vegetation Detection." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5708.

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This thesis investigates the application of index based, region segmentation, and deep learning methods to the sensor fusion of omnidirectional (O-D) Infrared (IR) sensors, Kinnect sensors, and O-D vision sensors to increase the level of intelligent perception for unmanned robotic platforms. The goals of this work is first to provide a more robust calibration approach and improve the calibration of low resolution and noisy IR O-D cameras. Then our goal was to explore the best approach to sensor fusion for vegetation detection. We looked at index based, region segmentation, and deep learning me

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Joubert, Damien. "Conception pour le véhicule autonome et les applications ADAS sécuritaires d'un système vidéo ADAS coopératif à base de rétines CMOS." Thesis, Université Clermont Auvergne‎ (2017-2020), 2019. http://www.theses.fr/2019CLFAC045.

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La perception monoculaire par caméra est un problème loin d’être résolu, qui oppose de nombreux acteurs et qui malgré des investissements massifs n’a toujours pas le niveau de performance requis pour les applications de conduite autonome. Si certaines fonctionnalités d’aides à la conduite laissent penser que l’attention du conducteur peut être réduite, ce n’est pas le cas en pratique car la question de la responsabilité repose encore sur les épaules du conducteur. Ce travail a pour objectif de construire une solution de vision frontale robuste, combinant plusieurs modalités, à travers l’utilis

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Trogadas, Giorgos, and Larissa Ekonoja. "The effect of noise filters on DVS event streams : Examining background activity filters on neuromorphic event streams." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302514.

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Image classification using data from neuromorphic vision sensors is a challenging task that affects the use of dynamic vision sensor cameras in real- world environments. One impeding factor is noise in the neuromorphic event stream, which is often generated by the dynamic vision sensors themselves. This means that effective noise filtration is key to successful use of event- based data streams in real-world applications. In this paper we harness two feature representations of neuromorphic vision data in order to apply conventional frame-based image tools on the neuromorphic event stream. We us

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Wei, Lijun. "Multi-sources fusion based vehicle localization in urban environments under a loosely coupled probabilistic framework." Phd thesis, Université de Technologie de Belfort-Montbeliard, 2013. http://tel.archives-ouvertes.fr/tel-01004660.

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In some dense urban environments (e.g., a street with tall buildings around), vehicle localization result provided by Global Positioning System (GPS) receiver might not be accurate or even unavailable due to signal reflection (multi-path) or poor satellite visibility. In order to improve the accuracy and robustness of assisted navigation systems so as to guarantee driving security and service continuity on road, a vehicle localization approach is presented in this thesis by taking use of the redundancy and complementarities of multiple sensors. At first, GPS localization method is complemented

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Gunnam, Kiran Kumar. "A DSP embedded optical naviagtion system." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969/13.

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Folio, David. "Stratégies de commande référencées multi-capteurs et gestion de la perte du signal visuel pour la navigation d’un robot mobile." Toulouse 3, 2007. http://www.theses.fr/2007TOU30253.

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L'amélioration des capteurs a permis l'émergence de la commande référencée capteurs qui permet la réalisation de diverses tâches de navigation de façon précises. L'intention de cette thèse est de contribuer à définir des stratégies de commande référencées multicapteurs pour un robot mobile réalisant une tâche référencée vision dans un environnement encombré d'obstacles susceptibles d'occulter le motif visuel. Nous avons ainsi proposé des lois de commandes permettant d'éviter à la fois les occultations et les collisions. Toutefois,les résultats obtenus ont montré que chercher à éviter simultané

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Herman, David. "Lokální navigace autonomního mobilního robota." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237248.

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This paper deals with the topic of design of a navigation system for an autonomous mobile robot in a park-like environment. Precisely, designing methods for road detection using available sensoric system, designing a mathematical model for fusion of these data, and suggesting a representation of an environment suitable for planning and local navigation.

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Jampana, Phanindra varma. "Computer vision based sensors for chemical processes." Phd thesis, 2010. http://hdl.handle.net/10048/920.

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Thesis (Ph.D.)--University of Alberta, 2010.<br>Title from PDF file main screen (viewed on Apr. 23, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Process Control, Department of Chemical and Materials Engineering, University of Alberta. Includes bibliographical references.

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Feng, Dongming. "Advanced Vision-Based Displacement Sensors for Structural Health Monitoring." Thesis, 2016. https://doi.org/10.7916/D8C8294G.

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Most existing structural health monitoring (SHM) techniques are based on measured acceleration data. Such practice, however, is highly expensive to operate, mainly due to cumbersome, time-consuming and expensive installation of sensors and their data acquisition systems. As an emerging noncontact method, the vision-based displacement sensor systems have attracted significant research interests and offered a promising alternative to the conventional sensors for SHM. However, most existing vision-based sensors require physical access to the structure to install a predesigned target panel, which

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Morris, Jeffery C. "Automated Spacecraft Docking Using a Vision-Based Relative Navigation Sensor." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-2820.

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Automated spacecraft docking is a concept of operations with several important potential applications. One application that has received a great deal of attention recently is that of an automated docking capable unmanned re-supply spacecraft. In addition to being useful for re-supplying orbiting space stations, automated shuttles would also greatly facilitate the manned exploration of nearby space objects, including the Moon, near-Earth asteroids, or Mars. These vehicles would allow for longer duration human missions than otherwise possible and could even accelerate human colonization of other

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YAN, MICHAEL T. "Machine Vision Based Inspection: Case Studies on 2D Illumination Techniques and 3D Depth Sensors." Thesis, 2012. http://hdl.handle.net/1974/7025.

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This paper investigates two distinct, but related, topics in machine vision. The first is the effect of lighting on the performance of a 2D vision-based inspection system. The lighting component of machine vision has often been overlooked; an attempt was made to quantify the impact on existing machine vision algorithms. The second topic explores the applications of a data-rich 3D vision sensor that is capable of providing depth data in a wide range of ambient lightning conditions for industrial applications. A focus is placed on inspection systems with the depth data provided by the sensor. Th

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