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检索条件"任意字段=Conference on Intelligent Robots and Computer Vision XXIX - Algorithms and Techniques"

共 373 条记录，以下是71-80 订阅

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intelligent robot control using an adaptive critic with a task control center and dynamic database

Intelligent robot control using an adaptive critic with a ta...

引用

conference on intelligent robots and computer vision XXIV - algorithms, techniques, and Active vision

作者： Hall, E. L. Ghaffari, M. Liao, X. Ali, S. M. Alhaj Univ Cincinnati Ctr Robot Res Cincinnati OH 45221 USA Hashemite Univ Zarqa Jordan

ISBN: (纸本)0819464821

The purpose of this paper is to describe the design, development and simulation of a real time controller for an intelligent, vision guided robot. The use of a creative controller that can select its own tasks is demonstrated. This creative controller uses a task control center and dynamic database. The dynamic database stores both global environmental information and local information including the kinematic and dynamic models of the intelligent robot. The kinematic model is very useful for position control and simulations. However, models of the dynamics of the manipulators are needed for tracking control of the robot's motions. Such models are also necessary for sizing the actuators, tuning the controller, and achieving superior performance. Simulations of various control designs are shown. Also, much of the model has also been used for the actual prototype Bearcat Cub mobile robot. This vision guided robot was designed for the intelligent Ground Vehicle Contest. A novel feature of the proposed approach is that the method is applicable to both robot arm manipulators and robot bases such as wheeled mobile robots. This generality should encourage the development of more mobile robots with manipulator capability since both models can be easily stored in the dynamic database. The multi task controller also permits wide applications. The use of manipulators and mobile bases with a high-level control are potentially useful for space exploration, certain rescue robots, defense robots, and medical robotics aids.

关键词： intelligent robots adaptive control creative control reinforcement learning adaptive critic

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Visual terrain mapping for traversable path planning of mobile robots

Visual terrain mapping for traversable path planning of mobi...

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conference on intelligent robots and computer vision XXII - algorithms, techniques and Active vision

作者： Shirkhodaie, A Amrani, R Tunstel, E Tennessee State Univ Dept Mech & Mfg Engn Intelligent Tact Mobil Robot Lab Nashville TN 37209 USA

ISBN: (纸本)081945561X

In this paper, we have primarily discussed technical challenges and navigational skill requirements of mobile robots for traversability path planning in natural terrain environments similar to Mars surface terrains. We have described different methods for detection of salient terrain features based on imaging texture analysis techniques. We have also presented three competing techniques for terrain traversability assessment of mobile robots navigating in unstructured natural terrain environments. These three techniques include: a rule-based terrain classifier, a neural network-based terrain classifier, and a fuzzy-logic terrain classifier. Each proposed terrain classifier divides a region of natural terrain into finite sub-terrain regions and classifies terrain condition exclusively within each sub-terrain region based on terrain visual clues. The Kalman Filtering technique is applied for aggregative fusion of sub-terrain assessment results. The last two terrain classifiers are shown to have remarkable capability for terrain traversability assessment of natural terrains. We have conducted a comparative performance evaluation of all three terrain classifiers and presented the results in this paper.

关键词： terrain traversability assessment modeling visual terrain mapping image texture analysis

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New vision System and Navigation Algorithm for an Autonomous Ground Vehicle

New Vision System and Navigation Algorithm for an Autonomous...

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conference on intelligent robots and computer vision XXXI - algorithms and techniques

作者： Tann, Hokchhay Shakya, Bicky Merchen, Alex C. Williams, Benjamin C. Khanal, Abhishek Zhao, Jiajia Ahlgren, David J. Trinity Coll Hartford CT 06106 USA

ISBN: (纸本)9780819499424

Improvements were made to the intelligence algorithms of an autonomously operating ground vehicle, Q, which competed in the 2013 intelligent Ground Vehicle Competition (IGVC). The IGVC required the vehicle to first navigate between two white lines on a grassy obstacle course, then pass through eight GPS waypoints, and pass through a final obstacle field. Modifications to Q included a new vision system with a more effective image processing algorithm for white line extraction. The path-planning algorithm adopted the vision system, creating smoother, more reliable navigation. With these improvements, Q successfully completed the basic autonomous navigation challenge, finishing tenth out of over 50 teams.

关键词： Image Processing Robotics National Instruments LabVIEW Compact RIO Distributed Systems

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The 14^TH Annual intelligent Ground Vehicle Competition:: intelligent teams creating intelligent ground robots

The 14<SUP>TH</SUP> Annual Intelligent Ground Vehicle Compet...

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conference on intelligent robots and computer vision XXIV - algorithms, techniques, and Active vision

作者： Theisen, Bernard L. Nguyen, Dmitri US Army Tank Automot Res Dev & Engn Ctr 6501 E Eleven Mile Rd Warren MI 48397 USA

ISBN: (纸本)0819464821

The intelligent Ground Vehicle Competition (IGVC) is one of three, unmanned systems, student competitions that were founded by the Association for Unmanned Vehicle Systems International (AUVSI) in the 1990s. The IGVC is a multidisciplinary exercise in product realization that challenges college engineering student teams to integrate advanced control theory, machine vision, vehicular electronics, and mobile platform fundamentals to design and build an unmanned system. Teams from around the world focus on developing a suite of dual-use technologies to equip ground vehicles of the future with intelligent driving capabilities. Over the past 14 years, the competition has challenged undergraduate, graduate and Ph.D. students with real world applications in intelligent transportation systems, the military and manufacturing automation. To date, teams from over 50 universities and colleges have participated. This paper describes some of the applications of the technologies required by this competition and discusses the educational benefits. The primary goal of the IGVC is to advance engineering education in intelligent vehicles and related technologies. The employment and professional networking opportunities created for students and industrial sponsors through a series of technical events over the three-day competition are highlighted. Finally, an assessment of the competition based on participant feedback is presented.

关键词： intelligent roboss autonomous systems ground vehicles engineering education IGVC

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Intuitive control of robotic manipulators

Intuitive control of robotic manipulators

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conference on intelligent robots and computer vision XXVIII: algorithms and techniques

作者： Rusbarsky, David Gray, Jeremy Peters, Douglas RE2 Inc 4925 Harrison St Pittsburgh PA 15201 USA US Army TARDEC Warren MI 48397 USA

ISBN: (纸本)9780819484154

As part of the Modular intelligent Manipulation system with Intuitive Control program, industry is working with the U. S. Army to explore technologies that will allow a user to intuitively control multiple degree of freedom robotic arms and maintain better awareness of the operating environment through haptic feedback. In addition to reporting resistance, haptic feedback can help make operators feel like they are actually there with the robot, opening doors, unscrewing blast caps, cutting wires, or removing batteries. Coupled with intuitive controls and advanced video feedback, the goal of this project is to provide users with the sensation that the robot is an extension of their body, all from a safe distance.

关键词： Robotic Manipulation Haptic Feedback Human System Integration computer vision GUI

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Active vision system for planning and programming of industrial robots in one-of-a-kind manufacturing

Active vision system for planning and programming of industr...

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conference on intelligent robots and computer vision XIV - algorithms, techniques, Active vision, and Materials Handling

作者： Berger, U Schmidt, A UNIV BREMEN BIBAD-28335 BREMENGERMANY

ISBN: (纸本)0819419524

The aspects of automation technology in industrial one-of-a-kind manufacturing are discussed. An approach to improve the quality and cost relation is developed and an overview of an 3D- vision supported automation system is given. This system is based on an active vision sensor for 3D-geometry feedback. Its measurement principle, the coded light approach, is explained. The experimental environment for the technical validation of the automation approach is demonstrated, where robot based processes (assembly, arc welding and flame cutting) are graphically simulated and off-line programmed. A typical process sequence for automated one- of-a-kind manufacturing is described. The results of this research development are applied to a project on the automated disassembling of car parts for recycling using industrial robots.

关键词： one-of-a-kind manufacturing industrial robot active vision structured light approach 3D-measurement geometry feedback process simulation off-line programming assembly arc welding flame cutting disassembling car recycling

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PYRAMIDAL NEURO-vision ARCHITECTURE FOR vision MACHINES 12

PYRAMIDAL NEURO-VISION ARCHITECTURE FOR VISION MACHINES

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12th conference on intelligent robots and computer vision: algorithms and techniques

作者： GUPTA, MM KNOPF, GK UNIV SASKATCHEWAN COLL ENGNINTELLIGENT SYST RES LABSASKATOON S7N 0W0SASKATCHEWANCANADA

ISBN: (纸本)0819413208

The vision system employed by an intelligent robot must be active; active in the sense that it must be capable of selectively acquiring the minimal amount of relevant information for a given task. An efficient active vision system architecture that is based loosely upon the parallel-hierarchical (pyramidal) structure of the biological visual pathway is presented in this paper. Although the computational architecture of the proposed pyramidal neuro-vision system is far less sophisticated than the architecture of the biological visual pathway, it does retain some essential features such as the converging multilayered structure of its biological counterpart. In terms of visual information processing, the neuro-vision system is constructed from a hierarchy of several interactive computational levels, whereupon each level contains one or more nonlinear parallel processors. Computationally efficient vision machines can be developed by utilizing both the parallel and serial information processing techniques within the pyramidal computing architecture. A computer simulation of a pyramidal vision system for active scene surveillance is presented.

关键词： Machine vision Visualization Robot vision Signal processing computer vision technology computer architecture Computing systems Data processing Information visualization Content addressable memory

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Integration of image/video understanding engine into 4D/RCS architecture for intelligent perception-based behavior of robots in real-world environments

Integration of image/video understanding engine into 4D/RCS ...

引用

conference on intelligent robots and computer vision XXII - algorithms, techniques and Active vision

作者： Kuvich, G Smart Computer Vision Systems (United States)

ISBN: (纸本)081945561X

To be completely successful, robots need to have reliable perceptual systems that are similar to human vision. It is hard to use geometric operations for processing of natural images. Instead, the brain builds a relational network-symbolic structure of visual scene, using different clues to set up the relational order of surfaces and objects with respect to the observer and to each other. Feature, symbol, and predicate are equivalent in the biologically inspired Network-Symbolic systems. A linking mechanism binds these features/symbols into coherent structures, and image converts from a "raster" into a "vector" representation. View-based object recognition is a hard problem for traditional algorithms that directly match a primary view of an object to a model. In Network-Symbolic Models, the derived structure, not the primary view, is a subject for recognition. Such recognition is not affected by local changes and appearances of the object as seen from a set of similar views. Once built, the model of visual scene changes slower then local information in the visual buffer. It allows for disambiguating visual information and effective control of actions and navigation via incremental relational changes in visual buffer. Network-Symbolic models can be seamlessly integrated into the NIST 4D/RCS architecture and better interpret images/video for situation awareness, target recognition, navigation and actions.

关键词： image video understanding network symbolic systems active vision UGV 4D/RCS

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An embedded vision system for an unmanned four-rotor helicopter

An embedded vision system for an unmanned four-rotor helicop...

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conference on intelligent robots and computer vision XXIV - algorithms, techniques, and Active vision

作者： Lillywhite, Kirt Lee, Dah-Jye Tippetts, Beau Fowers, Spencer Dennis, Aaron Nelson, Brent Archibald, James Brigham Young Univ Dept Elect & Comp Engn Robot Vis Lab Provo UT 84602 USA

ISBN: (纸本)0819464821

In this paper an embedded vision system and control module is introduced that is capable of controlling an unmanned four-rotor helicopter and processing live video for various law enforcement, security, military, and civilian applications. The vision system is implemented on a newly designed compact FPGA board (Helios). The Helios board contains a Xilinx Virtex-4 FPGA chip and memory making it capable of implementing real time vision algorithms. A Smooth Automated intelligent Leveling daughter board (SAIL), attached to the Helios board, collects attitude and heading information to be processed in order to control the unmanned helicopter. The SAIL board uses an electrolytic tilt sensor, compass, voltage level converters, and analog to digital converters to perform its operations. While level flight can be maintained, problems stemming from the characteristics of the tilt sensor limits maneuverability of the helicopter. The embedded vision system has proven to give very good results in its performance of a number of realtime robotic vision algorithms.

关键词： field programmable gate arrays (FPGA) robot vision unmanned helicopter attitude control

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Improving Shape Context Using Geodesic Information And Reflection Invariance

Improving Shape Context Using Geodesic Information And Refle...

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conference on intelligent robots and computer vision XXX - algorithms and techniques

作者： Premachandran, Vittal Kakarala, Ramakrishna Nanyang Technol Univ Sch Comp Engn Singapore 639798 Singapore

ISBN: (纸本)9780819494351

In this paper, we identify some of the existing problems in shape context matching. We first identify the need for reflection invariance in shape context matching algorithms and propose a method to achieve the same. With the use of these reflection invariance techniques, we bring all the objects, in a database, to their canonical form, which halves the time required to match two shapes using their contexts. We then show how we can build better shape descriptors by the use of geodesic information from the shapes and hence improve upon the well-known Inner Distance Shape Context (IDSC). The IDSC is used by many pre- and post-processing algorithms as the baseline shape-matching algorithm. Our improvements to IDSC will remain compatible for use with those algorithms. Finally, we introduce new comparison metrics that can be used for the comparison of two or more algorithms. We have tested our proposals on the MPEG-7 database and show that our methods significantly outperform the IDSC.

关键词： object recognition shape matching shape descriptor computer vision

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