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

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Active learning for robot manipulation 16

Active learning for robot manipulation

引用

16th European Conference on Artificial Intelligence, ECAI 2004

作者： Morales, Antonio Chinellato, Eris Fagg, Andrew H. Del Pobil, Angel P. Intelligent Robotics Lab. Univertitat Jaume I Castellon Spain Computer Science Department University of Massachusetts AmherstMA United States

ISBN: (纸本)9781586034528

This paper describes a novel application of active learning techniques in the field of robotic grasping. A vision-based grasping system has been implemented on a humanoid robot. It is able to compute a set of feasible grasps and to execute any of them and measure their actual reliability. An algorithm aimed at predicting the performance of an untested grasp using the results observed on previous similar attempts is presented. The previous experience is stored using a set of vision-based grasp descriptors. Moreover, a second algorithm that actively selects the next grasp to be executed in order to improve the predictive quality of the accumulated experience is introduced. An exhaustive database of experimental data is collected and used to test and validate both algorithms.

关键词： Anthropomorphic robots

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techniques for evaluating optical flow for visual odometry in extreme terrain

Techniques for evaluating optical flow for visual odometry i...

引用

2004 IEEE/RSJ International Conference on intelligent robots and Systems (IROS) (IEEE Cat. No.04CH37566)

作者： J. Campbell R. Sukthankar I. Nourbakhsh Robotics Institute Carnegie Mellon Pittsburgh PA USA Intel Research Pittsburgh Pittsburgh PA USA NASA Ames Research Center Moffett Field Moffett Field CA USA

Motion vision (visual odometry, the estimation of camera egomotion) is a well researched field, yet has seen relatively limited use despite strong evidence from biological systems that vision can be extremely valuable for navigation. The limited use of such vision techniques has been attributed to a lack of good algorithms and insufficient computer power, but both of those problems were resolved as long as a decade ago. A gap presently yawns between theory and practice, perhaps due to perceptions of robot vision as less reliable and more complex than other types of sensing. We present an experimental methodology for assessing the real world precision and reliability of visual odometry techniques in both normal and extreme terrain. This paper evaluates the performance of a mobile robot equipped with a simple vision system in common outdoor and indoor environments, including grass, pavement, ice, and carpet. Our results show that motion vision algorithms can be robust and effective, and suggest a number of directions for further development.

关键词： Image motion analysis Ultraviolet sources Machine vision Biomedical optical imaging Optical sensors Motion estimation Cameras Biological systems Navigation Biology computing

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Euclidean reconstruction independent on camera intrinsic parameters

Euclidean reconstruction independent on camera intrinsic par...

引用

IEEE International Workshop on intelligent robots and Systems (IROS)

作者： E. Malis A. Bartoli I.N.R.I.A. Sophia-Antipolis France INRlA Rhone-Alpes France

Standard bundle adjustment techniques for Euclidean reconstruction consider camera intrinsic parameters as unknowns in the optimization process. Obviously, the speed of an optimization process is directly related to the number of unknowns and to the form of the cost function. The scheme proposed in this paper differs from previous standard techniques since unknown camera intrinsic parameters are not considered in the optimization process. Considering fewer unknowns in the optimization process produces a faster algorithm, which is more adapted to time-dependent applications such as robotics. Computationally expensive metric reconstruction, using for example several zooming cameras, considerably benefits from an intrinsics-free bundle adjustment.

关键词： Cameras Image reconstruction Cost function Robot vision systems Computational efficiency Reconstruction algorithms Layout Predictive models computer applications computer vision

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Visual world perception modeling and control of cooperative mobile robots

Visual world perception modeling and control of cooperative ...

引用

Conference on intelligent robots and computer vision XXI

作者： Shirkhodaie, A Tennessee State Univ Intelligent Tact Mobil Res Lab Dept Mech & Mfg Engn Nashville TN 37209 USA

ISBN: (纸本)081945155X

There has been a great interest in the recent years in visual coordination and target tracking for mobile robots cooperating in unstructured environments. This paper describes visual servo control techniques suitable for intelligent task planning of cooperative robots operating in unstructured environment. In this paper, we have considered a team of semi-autonomous robots controlled by a remote supervisory control system. We have presented an algorithm for visual position tracking of individual cooperative robots within their working environment. Initially, we present a technique suitable for visual servoing of a robot toward its landmark targets. Secondly, we present an image-processing technique that utilizes images from a remote surveillance camera for localization of the robots within the operational environment. In this algorithm, the surveillance camera can be either stationary or mobile. The supervisor control system keeps tracks of relative locations of individual robots and utilizes relative coordinate information of the robots to plan their cooperative activities. We presented some results of this research effort that illustrates effectiveness of the proposed algorithms for cooperative robotic systems visual team working and target tracking.

关键词： world perception modeling cooperative robots robot pose estimation

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Proceedings of SPIE - Intellingent robots and computer vision XXI: algorithms, techniques, and Active vision

Proceedings of SPIE - Intellingent Robots and Computer Visio...

引用

intelligent robots and computer vision XXI: algorithms, techniques, and Active vision

The proceedings contains 33 papers from the conference on SPIE - intelligent robots and computer vision XXI: algorithms, techniques, and Active vision. The topics discussed include: learning for intelligent mobile robots;remote operation of robotics systems using WLAN- and CORBA-based architecture;autonomous cross-country driving using active vision;Web-based telerobotics system in a virtual reality environment;automatic calibration and neural networks for robot guidance;recursive least squares approach to calculate motion parameters for a moving camera;and effective color representation for image segmentation under nonwhite illumination.

关键词： Robotics

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Micro-assembly cell with dual optical/computer vision control for electrostatic gripping of MEMS

Micro-assembly cell with dual optical/computer vision contro...

引用

Conference on intelligent robots and computer vision XXI

作者： Enikov, ET Clark, S Minkov, L Univ Arizona Dept Aeronaut & Mech Engn Tucson AZ 85721 USA

ISBN: (纸本)081945155X

This paper describes the development of a miniature assembly cell for microsystems. The cell utilizes a transparent electrostatic gripper all-owing the use of computer vision for part alignment with respect to the gripper. Part to assembly alignment is achieved via optical triangulation using a fiber-coupled laser and a position sensitive detector (PSD). The system layout, principle of operation and design are described along with the visual and optical control algorithms and their implementation. Experimental measurements of the performance of the stage indicate normal and tangential gripping forces in the range of 0.03-2.5 mN and 1.-9. mN respectively. The visual search algorithm limits the feature tracking speed to 111ms /search. The alignment accuracy of the visual and optical proportional position feedback controls were determined to be +/-7 mum and +/-10 mum respectively.

关键词： electrostatic clamp visual servoing disparate sensing modalities optical feedback

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The expanding venue and persistence of planetary mobile robotic exploration - new technology concepts for Mars and beyond

The expanding venue and persistence of planetary mobile robo...

引用

Conference on intelligent robots and computer vision XXI

作者： Schenker, PS Elfes, A Hall, JL Huntsberger, TL Jones, JA Wilcox, BH Zimmerman, WF CALTECH Jet Prop Lab Pasadena CA 91109 USA

ISBN: (纸本)081945155X

The domain and technology of mobile robotic space exploration are fast moving from brief visits to benign Mars surface regions to more challenging terrain and sustained exploration. Further, the overall venue and concept of space robotic exploration are expanding-"from flatland to 3D'-from the surface;to sub-surface and aerial theatres on disparate large and small planetary bodies, including Mars, Venus, Titan, Europa, and small asteroids. These new space robotic system developments are being facilitated by concurrent, synergistic advances in software and hardware technologies for robotic mobility, particularly as regard on-board system autonomy and novel thermo-mechanical design. We outline these directions of emerging mobile science mission interest and technology enablement, including illustrative work at JPL on terrain-adaptive and multi-robot cooperative rover systems, aerobotic mobility, and subsurface ice explorers.

关键词： space robotics mobile robots intelligent robots robotic sensing aerial robots subsurface exploration

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Remote operation of robotics systems using WLAN and CORBA based architecture

Remote operation of robotics systems using WLAN and CORBA ba...

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Conference on intelligent robots and computer vision XXI

作者： Tikanmäki, A Riekki, J Röning, J Univ Oulu Intelligent Syst Grp Oulu 90014 Finland

ISBN: (纸本)081945155X

Our work describes generic solutions for controlling various different robots through IEEE 802.11b Wireless LAN. Our goals have been to develop a remote-operating architecture for robots with different configurations of sensors and actuators, as well as, controlling multiple robots through a wireless network. Our earlier development work on network-distributed control architecture for mobile robots provides a suitable platform for remote operation. In CORBA based architecture, new sensors or actuators, and new automatic functionality are easy to append. In addition to functionality, we have been developing user interfaces that contain generally useful components for multiple purposes and a possibility to control different shapes of robots and multiple robots at the same time. As a basic idea, the user interface should always be easily customizable, platform portable and require only a minimum amount of installation packages.

关键词： tele-robotics customizable user interface web technology

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Multilevel test and validation of algorithms implemented in a SOPC visionNode

Multilevel test and validation of algorithms implemented in ...

引用

Conference on intelligent robots and computer vision XXI

作者： Sluiter, A Hartmann, K Hasenmaier, B Rost, M Stieler, D Weihs, W Univ Siegen Ctr Sensor Syst D-57076 Siegen Germany

ISBN: (纸本)081945155X

This paper describes results of a tool development process and still on-going research program in multilevel algorithm design and validation for multisensor systems. Our work covers both the algorithm design process including the simulation efforts and the implementation of the algorithms into the sensor node prepared for real-time processing within a vision system network. The sensor node hardware is based on the System on Programmable Chip (SOPC)-Technology. This gives us the flexibility to interface different kinds of sensor elements (matrix-, line-sensors) and the processing-power to provide real-time possibilities in height data-rate applications. At the point today our hardware module for vision applications also uses a CPU module. This results in a high flexibility concerning the communication efforts. Our design can provide the use of CPU-modules within the SOPC design also. Mapping algorithms into a distributed sensor network will be done in either a centralized or decentralized way. That means the algorithm will be running on one sensor node or a part of the algorithm is implemented on some others nodes within the network. Beginning at the design and simulation level different kind of levels are opened for optimization, test and validate the developed algorithm. We present the architectural framework that supports the multilevel test and validation process.

关键词： Algorithm development Simulink Sensors Field programmable gate arrays Detection and tracking algorithms MATLAB computer architecture computer simulations Data communications Image processing

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The 11^TH Annual intelligent Ground Vehicle Competition:: team approaches to intelligent driving and machine vision

The 11<SUP>TH</SUP> Annual Intelligent Ground Vehicle Compet...

引用

Conference on intelligent robots and computer vision XXI

作者： Theisen, BL Lane, GR USA Tank Automot ResDev & Engn Ctr Warren MI USA

ISBN: (纸本)081945155X

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. Both U.S. and international teams focus on developing a suite of dual-use technologies to equip ground vehicles of the future with intelligent driving capabilities. Over the past 11 years, the competition has challenged both undergraduates and graduates, including Ph.D. students with real world applications in intelligent transportation systems, the military, and manufacturing automation. To date, teams from over 40 universities and colleges have participated. In this paper, we describe some of the applications of the technologies required by this competition, and discuss 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 robots autonomous systems ground vehicles engineering education IGVC

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