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arXiv 2021年

作者： Hering, Alessa Hansen, Lasse Mok, Tony C.W. Chung, Albert C.S. Siebert, Hanna Häger, Stephanie Lange, Annkristin Kuckertz, Sven Heldmann, Stefan Shao, Wei Vesal, Sulaiman Rusu, Mirabela Sonn, Geoffrey Estienne, Théo Vakalopoulou, Maria Han, Luyi Huang, Yunzhi Yap, Pew-Thian Brudfors, Mikael Balbastre, Yaël Joutard, Samuel Modat, Marc Lifshitz, Gal Raviv, Dan Lv, Jinxin Li, Qiang Jaouen, Vincent Visvikis, Dimitris Fourcade, Constance Rubeaux, Mathieu Pan, Wentao Xu, Zhe Jian, Bailiang De Benetti, Francesca Wodzinski, Marek Gunnarsson, Niklas Sjölund, Jens Grzech, Daniel Qiu, Huaqi Li, Zeju Thorley, Alexander Duan, Jinming Großbröhmer, Christoph Hoopes, Andrew Reinertsen, Ingerid Xiao, Yiming Landman, Bennett Huo, Yuankai Murphy, Keelin Lessmann, Nikolas van Ginneken, Bram Dalca, Adrian V. Heinrich, Mattias P. Institute of Medical Informatics Universität zu Lübeck Ratzeburger Allee 160 Lübeck23562 Germany Fraunhofer MEVIS Institute for Digital Medicine Lübeck23562 Germany Department of Radiology and Nuclear Medicine Radboud University Medical Center GA Nijmegen6525 Netherlands The Institute of Medical Informatics Universität zu Lübeck Lübeck23562 Germany The Department of Computer Science and Engineering The Hong Kong University of Science and Technology Hong Kong The Fraunhofer MEVIS Institute for Digital Medicine Lübeck23562 Germany The Department of Radiology Stanford University StanfordCA94305 United States The Department of Urology Stanford University StanfordCA94305 United States The Université Paris-Saclay CentraleSupélec Mathématiques et Informatique pour la Complexité et les Systèmes Inria Saclay Gif-sur-Yvette 91190 France Université Paris-Saclay Institut Gustave Roussy Inserm Radiothérapie Moléculaire et Innovation Thérapeutique Villejuif94800 France The Université Paris-Saclay CentraleSupélec Mathématiques et Informatique pour la Complexité et les Systèmes Inria Saclay Gif-sur-Yvette91190 France The Department of Radiology and Nuclear Medicine Radboud University Medical Center Nijmegen6525 GA Netherlands The School of Automation Nanjing University of Information Science and Technology Nanjing210044 China The School of Biomedical Engineering and Imaging Sciences King’s College London London United Kingdom The Athinoula A. Martinos Center for Biomedical Imaging Massachusetts General Hospital United States Harvard Medical School Boston United States The King’s College London United Kingdom The Tel Aviv University The Britton Chance Center for Biomedical Photonics Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology Hubei Wuhan430074 China MoE Key Laboratory for Biomedical Photonics Collaborative Innovation Center for Biomedical Engineering School of Engineering Sciences Huazhong University of Sci

Image registration is a fundamental medical image analysis task, and a wide variety of approaches have been proposed. However, only a few studies have comprehensively compared medical image registration approaches on a wide range of clinically relevant tasks. This limits the development of registration methods, the adoption of research advances into practice, and a fair benchmark across competing approaches. The Learn2Reg challenge addresses these limitations by providing a multi-task medical image registration data set for comprehensive characterisation of deformable registration algorithms. A continuous evaluation will be possible at https://***. Learn2Reg covers a wide range of anatomies (brain, abdomen, and thorax), modalities (ultrasound, CT, MR), availability of annotations, as well as intra- and inter-patient registration evaluation. We established an easily accessible framework for training and validation of 3D registration methods, which enabled the compilation of results of over 65 individual method submissions from more than 20 unique teams. We used a complementary set of metrics, including robustness, accuracy, plausibility, and runtime, enabling unique insight into the current state-of-the-art of medical image registration. This paper describes datasets, tasks, evaluation methods and results of the challenge, as well as results of further analysis of transferability to new datasets, the importance of label supervision, and resulting bias. While no single approach worked best across all tasks, many methodological aspects could be identified that push the performance of medical image registration to new state-of-the-art performance. Furthermore, we demystified the common belief that conventional registration methods have to be much slower than deep-learning-based methods. © 2021, CC BY.

关键词： Image registration

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A unified angle control scheme for hypersonic vehicle based on disturbance rejection 21

A unified angle control scheme for hypersonic vehicle based ...

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21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017

作者： Piao, Minnan Zhu, Kai Sun, Mingwei Chen, Zengqiang Dept. of Automation and Intelligent Science College of Computer and Control Engineering Nankai University Tianjin300350 China Tianjin Key Laboratory of Intelligent Robotics Tianjin300350 China Beijing Aerospace Technology Institute Beijing100074 China

ISBN: (数字)9781624104633

ISBN: (纸本)9781624104633

Hypersonic vehicles are characterized with strong nonlinearities, coupling effects and uncertainties as well as fast time-varying parameters, which impose great difficulty to the attitude control. This study proposes a unified scheme for all the Euler angles, angle of attack, and sideslip angle. First, three controllers based on active disturbance rejection control (ADRC) are designed for the Euler angles respectively, in which the external disturbances and the internal uncertainties can be estimated by the extended state observer (ESO) and compensated in real time actively. Then the geometric relations among the angles with different time scales are utilized to transform the commands of α and β into the commands of the pitch angle and the yaw angle. Next the stability-margin tester method is employed to tune the controller parameters, which guarantees the stability and robustness of the control system. 1000 nonlinear six-degree-of-freedom Monte Carlo simulation results demonstrate the good tracking performance and the robustness of the proposed control method. © 2017, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Hypersonic vehicles

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Differential private noise adding mechanism: Basic conditions and its application

Differential private noise adding mechanism: Basic condition...

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American Control Conference

作者： Jianping He Lin Cai Dept. of Automation Shanghai Jiao Tong University 200240 China Dept. of Electrical & Computer Engineering at the University of Victoria BC Canada

ISBN: (纸本)9781509045839

Differential privacy is a formal mathematical standard for quantifying the degree of that individual privacy in a statistical database is preserved. To guarantee differential privacy, a typical method is adding random noise to the original data for data release. In this paper, we investigate the basic conditions of differential privacy considering the general random noise adding mechanism, and then apply this result for privacy analysis of the privacy-preserving consensus algorithm. Specifically, we obtain a necessary and sufficient condition of differential privacy, which provides a useful and efficient criterion of achieving differential privacy. We utilize the result to analyze the privacy of some common random noises and the theory matches with the existing literature for special cases. Applying the theory, differential privacy property of a privacy-preserving consensus algorithm is investigated based on the proposed theory. We obtain the necessary condition of differential privacy for the privacy-preserving consensus algorithm. In addition, it is proved that the average consensus and differential privacy cannot be guaranteed simultaneously by any privacy-preserving consensus algorithm.

关键词： quantifying degree that Privacy Quantify Differential random noise statistical databases

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Alarm Audit and Enforcement: Automating the Integrity of Alarms for Manufacturing Systems

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IOP Conference Series: Materials Science and engineering 2019年第1期521卷

作者： T. Ault L. Yang Automation Engineer & Alarm Advisor Chevron & Colorado State University 709 Lenox Ct. Paso Robles CA 93446 USA Dept. of Electrical & Computer Engineering Colorado State University 1373 Campus Delivery Fort Collins CO 80523-1373

This work details the development of a continuous monitoring system technology to track the compliance of alarms in a manufacturing environment. A problem arose due to having simultaneous capital projects and continual process optimization work at several production sites. With continual changes to the control systems, a project was developed to ensure that alarm adjustments never violated established safety thresholds for systems. A technique was used to rationalize alarms using a risk based objective analysis to establish safety thresholds for each alarm. Then a tool was developed that continually cross-referenced alarm safety server with process control network to immediately notify management and engineering of any adjustments that violated alarm and safety rules for the site. This work led both to improved site safety and to an improvement of alarm metrics due to greater confidence in adjusting alarms with this audit tool. One site saw a monthly reduction of the quantity alarms by 55% and the elimination of alarm floods.

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Fish-Eye Lenses-Based Camera Calibration and Panoramic Image Stitching

Fish-Eye Lenses-Based Camera Calibration and Panoramic Image...

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IEEE International Conference on Consumer Electronics-Taiwan (ICCE-TW)

作者： Chao-Yung Hsu Chih-Ming Chang Li-Wei Kang Kang Ru-Hong Fu Duan-Yu Chen Ming-Fang Weng Automation & Instrumentation System Development Sec. China Steel Corporation Kaohsiung Taiwan New Smart Technology Co. LTD. Taipei Taiwan Dept. Computer Science and Information Engineering National Yunlin University of Science and Technology Yunlin Taiwan Department of Electrical Engineering Yuan Ze University Taoyuan Taiwan Smart Network System Institute Institute for Information Industry Taiwan

Fish-eye lenses are common in several computer vision applications, such as four-camera surround view driver assistance, where a very wide angle (e.g., 180 degrees) of view is available. Nevertheless, their applicability is usually limited by the lack of an accurate and easy-to-use calibration procedure. In this paper, we present a camera calibration method for fish-eye lenses and a panoramic image stitching framework for calibrated surround images. To achieve the calibration of fish-eye captured images, it only requires to observe a reference planar pattern (e.g., chessboard), followed by offline estimating extrinsic and intrinsic parameters and save the related parameters. Each fish-eye distorted image can then be efficiently online corrected. Then, each calibrated image is transformed to its top-down view (or bird's-eye view) via the perspective transformation based on the estimated homography matrix. As a result, these surround bird'seye view images can be stitched to generate the final panoramic image. It is expected that the proposed framework would be applicable to AVM (around view monitoring) system or ADAS (advanced driver assistance system) of vehicles in the future.

关键词： Conferences Europe Rail to rail outputs computer vision

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A single-wire capacitive power transfer system with large coupling alignment tolerance

A single-wire capacitive power transfer system with large co...

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IEEE PELS Workshop on Emerging Technologies: Wireless Power (WoW)

作者： Lixiang Jackie Zou Aiguo Patrick Hu Yu-gang Su Dept. of Electrical and Computer Engineering The University of Auckland Auckland New Zealand College of Automation Chongqing University Chongqing China

ISBN: (纸本)9781509062591

This paper introduces a new Wireless Power Transfer (WPT) system based on single pair of electric field coupling without a current return path. Such a single-contact Capacitive Power Transfer (CPT) system helps to enhance the coupling tolerance between the coupled plates. A class E converter is designed to drive an LCLC resonant circuit to boost the voltage at the primary side of the coupling plate, while a CLCL resonant circuit is used to boost the output current to the load. A practical prototype is built, and it has demonstrated that 3.8 W of power can be transferred across a single pair of copper coupling plates (100mm ×100mm) at full alignment. And it has found that the single-wire CPT system has a large coupling tolerance against both lateral and angular misalignments between the coupled plates.

关键词： Couplings RLC circuits Electric fields Inverters Resonant frequency Mathematical model Capacitors

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Context respectful counseling agent integrated with robot nodding for dialog promotion

Context respectful counseling agent integrated with robot no...

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2017 IEEE International Conference on Systems, Man, and Cybernetics, SMC 2017

作者： Kurashige, Kentarou Sakurai, Eriko Knauf, Rainer Tsuruta, Setsuo Sakurai, Yoshitaka Damiani, Ernesto Dept. of Information and Electronic Engineering Muroran Institute of Technology Muroran Japan Faculty of Service Management Bunri University of Hospitality Sayama Japan Dept. of Computer Science and Automation Ilmenau University of Technology Ilmenau Germany School of Information Environment Tokyo Denki University Inzai Japan School of Interdisciplinary Mathematical Sciences Meiji University Nakano Japan Universita' degli Studi di Milano Department of Computer Science Milan Italy

ISBN: (纸本)9781538616451

Nowadays, a lot of IT personnel have psychological distress. Meanwhile, counselors to help them are lack in number. To solve the problem, we proposed a counseling agent (CA) called CRECA (context respectful counseling agent). CRECA listens to clients and promotes their reflection context respectfully namely in a context preserving way. This agent can be enhanced using a body language called "unazuki" in Japanese, a kind of "nodding" to greatly promote dialogue, often accompanying "un-un" (meaning "exactly") of Japanese onomatopoeia. This body language is expected to significantly help represent empathy or entire approval. In this paper, the agent is integrated with such a "unazuki" or "dialog promotion nodding" robot to continue the conversation naturally or context respectfully towards clients' further reflection. To realize such "unazuki", the robot nods twice at each end of dialog sentence input by clients. The experimental evaluation proves such nodding is effective in counseling. © 2017 IEEE.

关键词： Robots

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Synchronized Cell-Balancing Charging of Supercapacitors

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IFAC-PapersOnLine 2017年第1期50卷 3338-3343页

作者： Li H. Peng J. He J. Huang Z. Pan J. School of Information Science and Engineering Central South University Changsha 410087 China Department of Computer Science University of Victoria Victoria V8P5C2 Canada Dept. of Automation Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing Shanghai 200240 China

As a classical cell balancing solution in low-power supercapacitor applications, the switched resistor circuit is vulnerable to resistance deviation effects with existing cell balancing methods. In this paper, we propose a synchronized cell balancing method for switched resistor circuits based on the consensus theory and a cyber-physical approach, with the aim of synchronizing cell voltages before they are fully charged. It is shown that the proposed cell-balancing algorithm is robust to resistance deviation effects. Extensive simulations are provided to show the effectiveness of the proposed method. © 2017

关键词： Cell balancing Charging Consensus Cyber-physical systems Supercapacitors

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Estimation, measurement and improvement of distributed automation applications performance

Estimation, measurement and improvement of distributed autom...

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Annual Conference of Industrial Electronics Society

作者： Eero Väänänen Valeriy Vyatkin Department of Electrical Engineering and Automation Aalto University Espoo Finland Dept. of Computer Science Electrical and Space Engineering Luleå University of Technology Luleå Sweden

This paper addresses the problem of how to estimate performance of distributed IEC 61499 automation systems and optionally, how to improve end-to-end response times in general. In order to make the process of distributed automation system design and deployment more streamlined, a software tool which could reliably estimate end-to-end response times within a system offline would be very beneficial. Focusing on possibilities to develop such a tool, there is a need for researching ways to determine end-to-end response times within distributed IEC 61499 systems. Based on the findings a model is created which can be used in the future software tool. The tool can either be a stand-alone application or as a plugin to some existing automation software development environment. This tool could be used already in the software development phase in order to compensate for the delays occurring in the physical system and thus, the actual work resulting from fine tuning while deploying the system could be minimized.

关键词： automation Time factors IEC Standards Delays Tools Estimation Reliability

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On active decoupling control for horizontal-lateral direction of hypersonic flight based on HIFOO 21

On active decoupling control for horizontal-lateral directio...

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21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017

作者： Ma, Shunjian Zhu, Kai Sun, Mingwei Wang, Zenghui Chen, Zengqiang Dept. of Automation and Intelligent Science Nankai University College of Computer and Control Engineering Tianjin300350 China Beijing Aerospace Technology Institute Tianjin Key Laboratory of Intelligent Robotics Tianjin300350 China Beijing Aerospace Technology Institute Beijing100074 China Department of Electrical and Mining Engineering University of South Africa FL1710 South Africa

ISBN: (数字)9781624104633

ISBN: (纸本)9781624104633

Nowadays, hypersonic flight vehicles are widely studied. Since their high nonlinearity, strong coupling and uncertain factors, the conventional three-channel independent control design method is often unable to work well. In this paper, an active disturbance rejection controller (ADRC) is utilized to cancel internal uncertainties and exogenous disturbances for longitudinal dynamics. Then, the MIMO robust controller is obtained by choosing proper sensitivity functions and weighting functions to reduce horizontal-lateral direction coupling. The conventional H robust controllor is high-order, which is difficult for practitioners to implement. With frequency transformation, both ADRC for the longitudinal dynamics and MIMO robust controller for the horizontal-lateral dynamics are reformed into the static output feedback structure to reduce the high order of controller. Finally, all parameters in the controllers can be optimized by HIFOO (H-Infinity Fixed Order Optimization). The Winged-Cone, a 6-freedom NASA hypersonic vehicle model, is used as a benchmark, and Monte Carlo simulations demonstrate the effectiveness of the proposed method. © 2017, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Controllers

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