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C2P-Net: Comprehensive Depth Map to Planar Depth Conversion for Room Layout Estimation

IEEE Transactions on Pattern Analysis and Machine Intelligence 2025年 PP卷 PP页

作者： Zhang, Weidong Zhou, Mengjie Cheng, Jiyu Liu, Ying Zhang, Wei Xi'an University of Posts & Telecommunications School of Communications and Information Engineering China Xi'an Key Laboratory of Image Processing Technology and Applications for Public Security China Shandong University School of Control Science and Engineering China Ministry of Education Key Laboratory of Machine Intelligence and System Control China

Room layout estimation seeks to infer the overall spatial configuration of indoor scenes using perspective or panoramic images. As the layout is determined by the dominant indoor planes, this problem inherently requires the reconstruction of these planes. Some studies reconstruct indoor planes from perspective images by learning pixel-level or instance-level plane parameters. However, directly learning these parameters has the problems of susceptibility to occlusions and position dependency. In this paper, we introduce the Comprehensive depth map to Planar depth (C2P) conversion, which reformulates planar depth reconstruction into the prediction of a comprehensive depth map and planar visibility confidence. Based on the parametric representation of planar depth we propose, the C2P conversion is applicable to both panoramic and perspective images. Accordingly, we present an effective framework for room layout estimation that jointly learns the comprehensive depth map and planar visibility confidence. Due to the differentiability of the C2P conversion, our network autonomously learns planar visibility confidence by constraining the estimated plane parameters and reconstructed planar depth map. We further propose a novel approach for 3D layout generation through sequential planar depth map integration. Experimental results demonstrate the superiority of our method across all evaluated panoramic and perspective datasets. © 1979-2012 IEEE.

关键词： Image-Text Matching Medical Report Generation Sample-graph Consistency Self-boosting framework

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The Enhancing Effect of the East Asian Subtropical Westerly Jet on Summer Extreme High-Temperature Events over Central-Eastern China Since the Late 1990s

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Advances in Atmospheric Sciences 2025年第3期42卷 453-466页

作者： Chujie GAO Yuyu NIU Gen LI Shanlei SUN Bo LU Chaofan LI Bei XU Jinglong HUANG Xiubao SUN College of Oceanography&Key Laboratory of Marine Hazards Forecasting Ministry of Natural ResourcesHohai UniversityNanjing 210098China Key Laboratory of Meteorological Disaster Ministry of Education(KLME)&Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)Nanjing University of Information Science and TechnologyNanjing 210044China State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Laboratory for Climate Studies and CMA-NJU Joint Laboratory for Climate Prediction Studies National Climate CenterChina Meteorological AdministrationBeijing 100081China Xiong’an Institute of Meteorological Artificial Intellegence Xiong'an 071708China Center for Monsoon System Research Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of the Chinese Academy of SciencesBeijing 100049China College of Intelligent Science and Control Engineering Jinling Institute of TechnologyNanjing 211169China

The increase in frequency and intensity of Extreme High-temperature Events(EHEs)over Central-Eastern China(CEC)in recent decades has severely impacted social development and *** observation and reanalysis datasets,this study explores the effect of the East Asian subtropical westerly jet stream(EAJ)on the CEC EHEs for the summers spanning 1979–*** its general relative location to the right side of the upper-level jet stream exit region,CEC would theoretically suffer more EHEs with a stronger and northwardly-shifted EAJ in summer due to the likelihood of abnormal subsidence induced by the ***,such an EAJ–EHE connection has been unstable over the past four decades but has displayed an evident interdecadal *** the late 1990s,the interannual variation of the EAJ was manifested mainly by its meridional displacement in the northeastern part of East Asia;thus,the atmospheric responses were essentially located to the east of CEC,exerting less of an influence on the CEC ***,since the late 1990s,the EAJ variation has featured an intensity change in its center over the northwest portion of the CEC,which has resulted in a westward shift in atmospheric responses to cover the CEC ***,the EAJ could potentially affect the summer CEC EHEs during 2000–*** findings offer support for an in-depth understanding of the formation mechanisms of extreme weather/climate events of this nature and thus provide a scientific reference for seasonal climate predictions.

关键词： summer extreme high-temperature events East Asian subtropical jet atmospheric circulation central-eastern China interdecadal change

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Experimental demonstration of 8190-km long-haul semiconductor-laser chaos synchronization induced by digital optical communication signal

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光：科学与应用（英文版） 2025年第2期14卷 333-343页

作者： Anbang Wang Junli Wang Lin Jiang Longsheng Wang Yuncai Wang Lianshan Yan Yuwen Qin Key Laboratory of Photonic Technology for Integrated Sensing and Communication Ministry of Education of ChinaGuangdong University of TechnologyGuangzhou 510006China Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education and Shanxi ProvinceTaiyuan 030024China Institute of Advanced Photonics Technology School of Information EngineeringGuangdong University of TechnologyGuangzhou 510006China Guangdong Provincial Key Laboratory of Information Photonics Technology Guangdong University of TechnologyGuangzhou 510006China Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education and Shanxi ProvinceTaiyuan 030024China College of Physics and Optoelectronics Taiyuan University of TechnologyTaiyuan 030024China Center for Information Photonics and Communications Southwest Jiaotong UniversityChengdu 610031China Key Laboratory of Photonic Technology for Integrated Sensing and Communication Ministry of Education of ChinaGuangdong University of TechnologyGuangzhou 510006China Institute of Advanced Photonics Technology School of Information EngineeringGuangdong University of TechnologyGuangzhou 510006China Guangdong Provincial Key Laboratory of Information Photonics Technology Guangdong University of TechnologyGuangzhou 510006China

Common-signal-induced synchronization of semiconductor lasers have promising applications in physical-layer secure transmission with high speed and compatibility with the current fiber ***,we propose an ultra-long-distance laser synchronization scheme by utilizing random digital optical communication signal as the common drive *** utilizing the long-haul optical coherent communication techniques,high-fidelity fiber transmission of the digital drive can be achieved and thus ultra-long-distance synchronization is *** were implemented with distributed feedback lasers injected by a random-digital phase-modulated drive *** show that high-quality synchronization can be achieved as the drive signal rate is larger than the laser relaxation frequency and the transmission bit error ratio is below a critical *** synchronization over 8191-km fiber transmission was experimentally *** to traditional common-signal-induced synchronization using analog drive signal such as chaos,the distance is increased by 8 times,and complicated hardware devices for channel impairment compensation are no longer *** addition,the proposed method does not sacrifice communication capacity like traditional methods which need a channel to transmit analog drive *** is therefore believed that this common-digital-signal induced laser synchronization paves a way for secure backbone and submarine transmission.

关键词： communication semiconductor synchronization signal digital chaos laser demonstration experimental induced

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A Two-Step Interval Estimation Method for State Monitoring of Port Intelligent Guided Vehicles with Unknown-but-Bounded Noises 8th

A Two-Step Interval Estimation Method for State Monitoring ...

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8th International Conference on Life System Modeling and Simulation, LSMS 2024 and 8th International Conference on Intelligent Computing for Sustainable Energy and Environment, ICSEE 2024

作者： Jiang, Yuchen Lin, Yufeng Liang, ZhenLong Zhang, Yilian Key Laboratory of Transport Industry of Marine Technology and Control Engineering Shanghai Maritime University Shanghai201306 China College of Information and Communications Technology School of Engineering and Technology Central Queensland University Rockhampton4701 Australia

ISBN: (纸本)9789819602933

This paper investigates the problem of state monitoring of Intelligent Guided Vehicles (IGVs) operating in the complex port environment. Considering the perturbation suffered by the IGV, a two-step interval estimation method by integrating robust observer design with reachability analysis is proposed. First, we physically model the port IGV and its operating states subject to disturbances and noises, respectively. Then, a robust observer for the state monitoring of the considered IGV is designed and the existing conditions of the observer parameters are derived. In addition, based on the conditions for the existence of the proposed observer, the reachable set is obtained by the zonotope technique. Finally, the effectiveness of the proposed two-step interval estimation algorithm for the considered port IGV is verified by numerical simulations. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Automatic guided vehicles

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A Data Association Method Based on Azimuth Inverse Cotangent Value

A Data Association Method Based on Azimuth Inverse Cotangent...

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International Youth Conference on Radio Electronics, Electrical and Power engineering (REEPE)

作者： Nan Zou Muze Yin Guangpu Zhang Zhenqi Yang Pengbo Ma Dongyu Li National Key Laboratory of Underwater Acoustic Technology Harbin Engineering University Harbin China Key Laboratory of Marine Information Acquisition and Security (Harbin Engineering University) Ministry of Industry and Information Technology Harbin China College of Underwater Acoustic Engineering Harbin Engineering University Harbin China Science and Technology on Electronic Information Control Laboratory Chengdu China

ISBN: (数字)9798331531836

ISBN: (纸本)9798331531843

In this paper, we address the challenge of data association in scenarios involving multiple observers for underwater non-cooperative localization, where it is unclear how measurement data from different stations corresponds to the same target. We propose a novel data association method that leverages the inverse cotangent of azimuthal sequence features. The method first calculates the sequence of cotangent values measured by each station's bearing in a limited time. Linearly analyzes the sequence to obtain the slope, and finally realizes the data association according to the characteristic that the inverse cotangent value of the slope corresponds to the target's motion heading. The simulation results show that the proposed method has better association localization ability compared with the traditional method, overcomes the problem of the conventional method that the computational volume is too large when the number of observation stations and targets is large, and ensures the association correctness under a certain error.

关键词： Location awareness Power engineering Accuracy Azimuth Simulation Noise Observers Time measurement

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Microstructure and property evolution of nitrogen supersaturated (AlNbTiZr)Nx high-entropy ceramic films: Effect of nitrogen ratios

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Ceramics International 2025年

作者： Wang, Bingxu Li, Peng Cai, Zhaobing Lin, Guangpei Dong, Yinghui Gu, Le Key Laboratory of Metallurgical Equipment and Control Technology Ministry of Education Wuhan University of Science and Technology Wuhan430081 China Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering Wuhan University of Science and Technology Wuhan430081 China Precision Manufacturing Institute Wuhan University of Science and Technology Wuhan430081 China Key Laboratory of Advanced Marine Materials Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo315201 China

High entropy ceramic (AlNbTiZr)Nx films with different nitrogen contents were prepared by magnetron sputtering at different nitrogen ratios (Rn). The phase composition, microstructure, mechanical and tribological properties of the films were characterized. The results show that nitrogen saturates rapidly in the films and the nitrogen content of the films increases slightly with the increase of Rn. The films deposited at Rn = 0 exhibited an amorphous structure, while those deposited at Rn = 0.83–16.67 % demonstrated an FCC structure. The hardness and modulus of the films varied without a clear regularity with increasing the deposited Rn, where the highest values of 32.95 GPa and 468.67 GPa were measured at Rn = 3.33 %, respectively. All films exhibited adequate wear resistance in the friction tests, except the alloy films deposited at Rn = 0. In particular, the films deposited at Rn = 16.67 % demonstrated exceptional wear resistance, with a minimum wear rate of 8.95 × 10−8 mm3 N−1 mm−1. Regarding the compositions of the abrasive debris and oxide film, the wear debris and oxide film were found to consist of TiO2, Nb2O5, Al2O3, and ZrO2 for all of the films except for that deposited at Rn = 0. However, the film deposited at Rn = 0 was worn out. In addition, it is found that the wear mechanism of the (AlNbTiZr)Nx films is mainly abrasive wear, while the wear mechanism of the AlNbTiZr film is abrasive and adhesive wear. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Oxide films

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Water and sediment characteristics in pressurized pipelines under complex terrain conditions

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Physics of Fluids 2025年第2期37卷

作者： Nan, Junhu Li, Wei Tao, Ran College of Energy and Power Engineering Lanzhou University of Technology Lanzhou730050 China Key Laboratory of Advanced Pumps Valves and Fluid Control System of the Ministry of Education Lanzhou University of Technology Lanzhou730050 China China Communications Hydraulic Engineering Company Limited Nanjing210012 China

This study selects the pipelines of the SGN as the research object and combines the experimental study with numerical simulation to investigate the water and sediment characteristics in pressurized pipelines under complex terrain conditions and determine the critical non-silting velocity under different flow rates. The results show that the sediment concentration and particle size gradually settle along the length of the pipeline, and the sediment particle size at the sampling position is 0.724-180 μm, with a sediment concentration ranging 1.09-6.28 kg/m3. The sediment in the inverted siphon pipeline is susceptible to siltation mainly at the bend below the rising section and the rising section. The sediment concentration in the radial direction of the pipeline is smaller at the upper layer and larger at the lower layer. As the flow rate increases, the sediment concentration in the lower layer of the horizontal section of the inverted siphon gradually decreases, while that in the lower layer of the descending and ascending sections gradually increases. Excess sediment concentration at the bottom of the pipeline under low flow conditions makes the high-velocity zone move upward. The flow velocity decreases in the lower layer and increases in the middle and upper layers. The critical non-silting velocity of sediment in the pipeline under sediment particle size of 1-500 μm is 1.20 m/s. The time-averaged pressure in the pipeline under water-sediment conditions is slightly greater than that under clear water conditions. The increase in sediment concentration at the bottom of the pipeline causes the fluctuation frequency and amplitude of pulsation pressure at the section center of the pipeline to be uneven and the frequency more dispersed. The research results may provide reference for the operation and design of similar projects. © 2025 Author(s).

关键词： Siphons

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Rate Bumpless Switching control for Turbofan control Systems With Actuator Fault Based on Switched Models

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IEEE Transactions on Aerospace and Electronic Systems 2025年

作者： Gao, Yuxuan Zhao, Ying Wang, Rui Huang, Dingyi Du, Xian Dalian Maritime University College of Marine Electrical Engineering Dalian116026 China Dalian University of Technology School of Mechanics and Aerospace Engineering Dalian116024 China Dalian University of Technology Key Laboratory of Intelligent Control and Optimization for Industrial Equipment Ministry of Education Dalian116024 China Dalian University of Technology School of Control Science and Engineering Dalian116024 China

This article proposes a rate bumpless switching control approach for the turbofan control systems with actuator faults based on switched models. A characterization of the rate bump restraint is introduced, quantifying the rate bump restraint level based on the state magnitude at the switching points. Unlike the existing description of the rate bumpless switching performance, this description more accurately captures the original intent of bumpless switching. By jointly designing the rate bumpless restriction-dependent switching command and dynamic output feedback control law, a robust stability condition is formulated with the actuator fault addressed. The established rate bumpless switching control method is effectively validated through simulation experiments on the hardware-in-the-loop platform and semiphysical experimental testbed. © 1965-2011 IEEE.

关键词： Hardware-in-the-loop simulation

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Bilayer nonzero-sum differential game-based optimal control of modular robot manipulator for human–robot collaboration

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European Journal of control 2025年 83卷

作者： Cui, Yiming An, Tianjiao Dong, Bo Ma, Bing Zhang, Zhenguo Department of Control Science and Engineering Changchun University of Technology Jilin Changchun130012 China Institute of Rail Transit Jilin Communications Polytechnic Jilin Changchun130012 China Key Laboratory of Advanced Structural Materials Ministry of Education Changchun University of Technology Jilin Changchun130012 China

This paper introduces a bilayer nonzero-sum differential game-based optimal control framework for a Modular Robot Manipulator (MRM) in Human–Robot Collaboration (HRC) tasks. The dynamic model of the MRM is obtained with the Joint Torque Feedback (JTF) technique. Consider the N-player nonzero-sum differential game within the MRM subsystems and the 2-player nonzero-sum differential game involving both the MRM and human collaborators in HRC tasks as the inner and outer layers of the bilayer nonzero-sum differential game. The Nash equilibrium solutions for the inner and outer layers of the nonzero-sum differential games are independently determined using the Adaptive Dynamic Programming (ADP) algorithm, which is based on a fuzzy logic system. As a result, optimal control policies for MRM subsystems and the optimal interaction force in HRC tasks are derived. The trajectory tracking error of the MRM system and the outer layer physical Human–Robot Interaction (pHRI) system have both been proven to be Ultimately Uniformly Bounded (UUB) under the bilayer nonzero-sum differential game-based optimal control of MRM for HRC with the application of Lyapunov theory. Finally, experiment results are presented to validate the superiority and effectiveness of the proposed method. © 2025

关键词： Modular robots

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Research on Propeller Dynamic Load Simulation System of Electric Propulsion Ship

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China Ocean engineering 2013年第2期27卷 255-263页

作者：黄辉沈爱弟褚建新 Key Laboratory of Marine Technology & Control Engineering Ministry of CommunicationsShanghai Maritime University

A dynamic marine propeller simulation system was developed, which is utilized for meeting the experimental requirement of theory research and engineering design of marine electric propulsion system. By applying an actual ship parameter and its accurate propeller J＇ -KT＇ and J＇ - Kp＇ curve data, functional experiments based on the simulation system were carried out. The experiment results showed that the system can correctly emulate the propeller characteristics, produce the dynamic and steady performances of the propeller under different navigation modes, and present actual load torque for electric propulsion motor.

关键词： electric propulsion ship-propeller model dynamic load emulation torque closed-loop control

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