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Unsupervised Learning for Subterranean Junction Recognition Based on 2D Point Cloud

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arXiv 2020年

作者： Mansouri, Sina Sharif Pourkamali-Anaraki, Farhad Arranz, Miguel Castao Agha-mohammadi, Ali-akbar Burdick, Joel Nikolakopoulos, George Robotics and AI Team Department of Computer Electrical and Space Engineering Luleå University of Technology LuleåSE-97187 Sweden Department of Computer Science University of Massachusetts Lowell MA United States Department of Civil Environmental and Natural Resources Engineering Luleå University of Technology LuleåSE-97187 Sweden Jet Propulsion Laboratory California Institute of Technology PasadenaCA91109 United States Division of Engineering and Applied Sciences California Institute of Technology PasadenaCA United States

This article proposes a novel unsupervised learning framework for detecting the number of tunnel junctions in subterranean environments based on acquired 2D point clouds. The implementation of the framework provides valuable information for high level mission planners to navigate an aerial platform in unknown areas or robot homing missions. The framework utilizes spectral clustering, which is capable of uncovering hidden structures from connected data points lying on non-linear manifolds. The spectral clustering algorithm computes a spectral embedding of the original 2D point cloud by utilizing the eigen decomposition of a matrix that is derived from the pairwise similarities of these points. We validate the developed framework using multiple data-sets, collected from multiple realistic simulations, as well as from real flights in underground environments, demonstrating the performance and merits of the proposed methodology. Copyright © 2020, The Authors. All rights reserved.

关键词： Antennas

Reviewing continual learning from the perspective of human-level intelligence

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arXiv 2021年

作者： Chang, Yifan Li, Wenbo Peng, Jian Tang, Bo Kang, Yu Lei, Yinjie Gui, Yuanmiao Zhu, Qing Liu, Yu Li, Haifeng The State Key Laboratory of Fire Science Department of Automation and Institute of Advanced Technology University of Science and Technology of China Hefei China Institute of Intelligent Machines Chinese Academy of Sciences Hefei230031 China The Department of Electrical and Computer Engineering Mississippi State University United States College of Electronics and Information Engineering Sichuan University Chengdu China Faculty of Geosciences and Environmental Engineering The Southwest Jiaotong University Chengdu China Institute of Remote Sensing and Geographic Information System Peking Universit Beijing China School of Geosciences and Info-Physics Central South University South Lushan Road Changsha410083 China

Humans continual learning (CL) ability is closely related to Stability Versus Plasticity Dilemma that describes how humans achieve ongoing learning capacity and preservation for learned information. The notion of CL has always been present in artificial intelligence (AI) since its births. This paper proposes a comprehensive review of CL. Different from previous reviews that mainly focus on the catastrophic forgetting phenomenon in CL, this paper surveys CL from a more macroscopic perspective based on the Stability Versus Plasticity mechanism. Analogous to biological counterpart, "smart" AI agents are supposed to i) remember previously learned information (information retrospection);ii) infer on new information continuously (information prospection:);iii) transfer useful information (information transfer), to achieve high-level CL. According to the taxonomy, evaluation metrics, algorithms, applications as well as some open issues are then introduced. Our main contributions concern i) rechecking CL from the level of artificial general intelligence;ii) providing a detailed and extensive overview on CL topics;iii) presenting some novel ideas on the potential development of CL. © 2021, CC BY.

关键词： Petroleum reservoir evaluation

Convex Relaxation with Log-Determinant Divergence-L1 Regularization for 3D Shape Reconstruction

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Convex Relaxation with Log-Determinant Divergence-L1 Regular...

第三十八届中国控制会议

作者： Wei Cao Luefeng Chen Min Wu Witold Pedrycz School of Automation China University of Geosciences Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Department of Electrical and Computer Engineering University of Alberta

Investigated is the problem of estimating the 3 D shape of an object defined by a set of 3 D landmarks with their 2 D correspondences in a single image. To solve this problem, we use a dictionary of the basic shape with LDD-L1 regularization,which is the construction of the shape space model. Based on the proposed convex optimization method, 3 D human pose reconstruction by shape space model and 3 D variable shape model was carried out on the mocap database. To improve accuracy and reduce the number of iterations, we use PSO algorithm to optimize initial value of the key parameter. The experimental results show that the improved algorithm exhibits less iterations but higher accuracy, which can be much helpful in practical applications.

关键词： LDD-L1 regularization 3D reconstruction PSO

Combining closed-loop test generation and execution by means of model checking

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arXiv 2019年

作者： Buzhinsky, Igor Vyatkin, Valeriy Department of Electrical Engineering and Automation Aalto University Espoo Finland Computer Technologies Laboratory ITMO University St. Petersburg Russia Department of Computer Science Electrical and Space Engineering Luleå University of Technology Sweden

Model checking is an established technique to formally verify automation systems which are required to be trusted. However, for sufficiently complex systems model checking becomes computationally infeasible. On the other hand, testing, which offers less reliability, often does not present a serious computational challenge. Searching for synergies between these two approaches, this paper proposes a framework to ensure reliability of industrial automation systems by means of hybrid use of model checking and testing. This framework represents a way to achieve a tradeoff between verification reliability and computational complexity which has not yet been explored in other approaches. Instead of undergoing usual model checking, system requirements are checked only on particular system behaviors which represent a test suite achieving coverage for both the system and the requirements. Then, all stages of the framework support the case of a closed-loop model, where not only the controller, but also the plant is modeled. Copyright © 2019, The Authors. All rights reserved.

关键词： Model checking

Online multi-object tracking and segmentation with GMPHD filter and mask-based affinity fusion

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arXiv 2020年

作者： Song, Young-Min Yoon, Young-Chul Yoon, Kwangjin Jeon, Moongu Lee, Seong-Whan Pedrycz, Witold The School of Electrical Engineering and Computer Science Gwangju Institute of Technology Gwangju61005 Korea Republic of The Robotics Laboratory Hyundai Motor Company Gyeonggi-do 16082 Korea Republic of SI Analytics Co. Ltd. Daejeon34051 Korea Republic of The Department of Artificial Intelligence Korea University Seoul02841 Korea Republic of The Department of Brain and Cognitive Engineering Korea University Seoul02841 Korea Republic of The Department of Electrical and Computer Engineering University of Alberta EdmontonABT6R 2H5 Canada The Department of Electrical and Computer Engineering Faculty of Engineering King Abdulaziz University Jeddah21589 Saudi Arabia The Systems Research Institute Polish Academy of Sciences Warsaw01-447 Poland

In this paper, we propose a highly practical fully online multi-object tracking and segmentation (MOTS) method that uses instance segmentation results as an input. The proposed method is based on the Gaussian mixture probability hypothesis density (GMPHD) filter, a hierarchical data association (HDA), and a mask-based affinity fusion (MAF) model to achieve high-performance online tracking. The HDA consists of two associations: segment-to-track and track-to-track associations. One affinity, for position and motion, is computed by using the GMPHD filter, and the other affinity, for appearance is computed by using the responses from a single object tracker such as a kernalized correlation filter. These two affinities are simply fused by using a score-level fusion method such as min-max normalization referred to as MAF. In addition, to reduce the number of false positive segments, we adopt mask IoU-based merging (mask merging). The proposed MOTS framework with the key modules: HDA, MAF, and mask merging, is easily extensible to simultaneously track multiple types of objects with CPU-only execution in parallel processing. In addition, the developed framework only requires simple parameter tuning unlike many existing MOTS methods that need intensive hyperparameter optimization. In the experiments on the two popular MOTS datasets, the key modules show some improvements. For instance, ID-switch decreases by more than half compared to a baseline method in the training sets. In conclusion, our tracker achieves state-of-the-art MOTS performance in the test sets. Copyright © 2020, The Authors. All rights reserved.

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NTIRE 2021 depth guided image relighting challenge

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arXiv 2021年

作者： Helou, Majed El Zhou, Ruofan Süsstrunk, Sabine Timofte, Radu Suin, Maitreya Rajagopalan, A.N. Wang, Yuanzhi Lu, Tao Zhang, Yanduo Wu, Yuntao Yang, Hao-Hsiang Chen, Wei-Ting Kuo, Sy-Yen Luo, Hao-Lun Zhang, Zhiguang Luo, Zhipeng He, Jianye Zhu, Zuo-Liang Li, Zhen Qiu, Jia-Xiong Kuang, Zeng-Sheng Lu, Cheng-Ze Cheng, Ming-Ming Shao, Xiu-Li Li, Chenghua Ding, Bosong Qian, Wanli Li, Fangya Li, Fu Deng, Ruifeng Lin, Tianwei Liu, Songhua Li, Xin He, Dongliang Yazdani, Amirsaeed Guo, Tiantong Monga, Vishal Nsampi, Ntumba Elie Hu, Zhongyun Wang, Qing Nathan, Sabari Kansal, Priya Zhao, Tongtong Zhao, Shanshan EPFL Switzerland ETH Zürich Switzerland ASUS Intelligent Cloud Services ASUSTeK Computer Inc Taiwan Graduate Institute of Electronics Engineering National Taiwan University Taiwan Department of Electrical Engineering National Taiwan University Taiwan Institute of Automation Chinese Academy of Sciences China Couger Inc Co. Ltd China United States Indian Institute of Technology Madras India Nankai University China Computer Vision and Computational Photography Group School of Computer science Northwestern Polytechnical University China Dalian Maritime University China China Everbright Bank China Baidu Inc China Hubei Key Laboratory of Intelligent Robot Wuhan Institute of Technology China

Image relighting is attracting increasing interest due to its various applications. From a research perspective, image relighting can be exploited to conduct both image normalization for domain adaptation, and also for data augmentation. It also has multiple direct uses for photo montage and aesthetic enhancement. In this paper, we review the NTIRE 2021 depth guided image relighting challenge. We rely on the VIDIT dataset for each of our two challenge tracks, including depth information. The first track is on one-to-one relighting where the goal is to transform the illumination setup of an input image (color temperature and light source position) to the target illumination setup. In the second track, the any-to-any relighting challenge, the objective is to transform the illumination settings of the input image to match those of another guide image, similar to style transfer. In both tracks, participants were given depth information about the captured scenes. We had nearly 250 registered participants, leading to 18 confirmed team submissions in the final competition stage. The competitions, methods, and final results are presented in this paper. Copyright © 2021, The Authors. All rights reserved.

关键词： Light sources

Challenges and Outlook in Robotic Manipulation of Deformable Objects

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arXiv 2021年

作者： Zhu, Jihong Cherubini, Andrea Dune, Claire Navarro-Alarcon, David Alambeigi, Farshid Berenson, Dmitry Ficuciello, Fanny Harada, Kensuke Kober, Jens Li, Xiang Pan, Jia Yuan, Wenzhen Gienger, Michael Cognitive Robotics TU Delft Honda Research Institute Europe Netherlands LIRMM Université de Montpellier CNRS 161 Rue Ada Montpellier34090 France COSMER Laboratory EA 7398 Universié de Toulon La Garde83130 France The Hong Kong Polytechnic University Department of Mechanical Engineering Kowloon Hong Kong The University of Texas at Austin Austin United States The University of Michigan Ann ArborMI United States Università degli Studi di Napoli Federico II Napoli80125 Italy The Osaka University Japan The National Institute of AIST Japan Cognitive Robotics TU Delft Netherlands Department of Automation Tsinghua University Beijing China The Department of Computer Science The University of Hong Kong Pok Fu Lam Hong Kong Robotics Institute Carnegie Mellon University PittsburghPA15213 United States Honda Research Institute Europe Offenbach Germany

Deformable object manipulation (DOM) is an emerging research problem in robotics. The ability to manipulate deformable objects endows robots with higher autonomy and promises new applications in the industrial, services, and healthcare sectors. However, compared to rigid object manipulation, the manipulation of deformable objects is considerably more complex, and is still an open research problem. Addressing DOM challenges demand breakthroughs in almost all aspects of robotics, namely hardware design, sensing, (deformation) modeling, planning, and control. In this article, we review recent advances and highlight the main challenges when considering deformation in each sub-field. A particular focus of our paper lies in the discussions of these challenges and proposing future directions of research. © 2021, CC BY.

关键词： Deformation

ViTa-SLAM: A Bio-inspired Visuo-Tactile SLAM for navigation while interacting with aliased environments

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arXiv 2019年

作者： Struckmeier, Oliver Tiwari, Kshitij Salman, Mohammed Pearson, Martin J. Kyrki, Ville Department of Electrical Engineering and Automation Aalto University Espoo02150 Bristol Robotics Laboratory University of Bristol University of the West of England Bristol United Kingdom Bristol Robotics Laboratory BristolBS161QY United Kingdom

RatSLAM is a rat hippocampus-inspired visual Simultaneous Localization and Mapping (SLAM) framework capable of generating semi-metric topological representations of indoor and outdoor environments. Whisker-RatSLAM is a 6D extension of the RatSLAM and primarily focuses on object recognition by generating point clouds of objects based on tactile information from an array of biomimetic whiskers. This paper introduces a novel extension to both former works that is referred to as ViTa-SLAM that harnesses both vision and tactile information for performing SLAM. This not only allows the robot to perform natural interactions with the environment whilst navigating, as is normally seen in nature, but also provides a mechanism to fuse non-unique tactile and unique visual data. Compared to the former works, our approach can handle ambiguous scenes in which one sensor alone is not capable of identifying false-positive loopclosures. Copyright © 2019, The Authors. All rights reserved.

关键词： Biomimetics

ViTa-SLAM: A Bio-inspired Visuo-Tactile SLAM for Navigation while Interacting with Aliased Environments

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ViTa-SLAM: A Bio-inspired Visuo-Tactile SLAM for Navigation ...

IEEE International Conference on Cyborg and Bionic Systems (CBS)

作者： Oliver Struckmeier Kshitij Tiwari Mohammed Salman Martin J. Pearson Ville Kyrki Department of Electrical Engineering and Automation Aalto University Espoo Finland Bristol Robotics Laboratory University of Bristol and University of the West of England Bristol UK Bristol Robotics Laboratory Bristol U.K Aalto University Espoo Finland

ISBN: (数字)9781728150734

ISBN: (纸本)9781728150741

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