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Sparse Representation Based Private Face Recognition In The Cloud, Liu Yan, Jin Xin, Zhao Geng, Xiaodong Li, Yingya Chen, Guo Kui 2020 1.Beijing Electronic Science and Technology Institute, Beijing 100070, China;;2.Xidian University, Xi'an 710071, China;

Sparse Representation Based Private Face Recognition In The Cloud, Liu Yan, Jin Xin, Zhao Geng, Xiaodong Li, Yingya Chen, Guo Kui

Journal of System Simulation

Abstract: In order to protect user privacy, identification computing of user facial image data in the cloud was accomplished, the sparse representation based private face recognition method in the cloud was proposed. Terminal users collected face images and compared with face images in cloud database and then determined whether faces the terminal acquired belonged to the cloud face database, but both could not achieve each other's face image content. The method processed face images in database and cloud into sparse representation via a third-party terminal, then using Paillier and oblivious transfer homomorphic encryption algorithm to contrast sparse representation coefficient vector …


Pose Estimation Using Limbs Adjustment, Cai Peng, Dehui Kong, Baocai Yin, Huo Yi 2020 Beijing Key Laboratory of Multimedia and Intelligent Software Technology, College of Metropolitan Transportation, Beijing University of Technology, Beijing 100124, China;

Pose Estimation Using Limbs Adjustment, Cai Peng, Dehui Kong, Baocai Yin, Huo Yi

Journal of System Simulation

Abstract: Human body is decomposed into several local component templates connected with tree structure by articulated pose estimation with mixture-of-parts, and the corresponding full score is used to estimate body pose. Such a method fails in precisely estimating human pose due to the defects of tree models when human has the complicated pose of body. To address this problem, pose estimation using limbs adjustment with mixtures-of-parts models was proposed. And pixel discrete direction, local characteristic functions blending full score and pixel discrete direction and other attributes, and pose estimation using limbs adjustment based on local characteristic functions of articulated position …


Improved Method Of Extracting Hks Descriptors And Non-Rigid Classification Applications, Jingyu Jiang, Lili Wan 2020 1. Institute of Information Science, Beijing Jiaotong University, Beijing 100044, China;;2. Beijing Key Laboratory of Advanced Information Science and Network Technology, Beijing Jiaotong University, Beijing 100044, China;

Improved Method Of Extracting Hks Descriptors And Non-Rigid Classification Applications, Jingyu Jiang, Lili Wan

Journal of System Simulation

Abstract: In order to make the HKS(heat kernel signature)have wider applicability in non-rigid shape analysis, an improved method of extracting HKS descriptors for unconnected non-rigid 3D models was proposed. The largest connected component was obtained. The HKS descriptors of the largest connected component were calculated and those descriptors of the boundary vertices and their 1-ring neighbors were excluded. For shape classifications, the dictionary was learned for each class based on the sparse representation theory. For a test model, each dictionary was utilized to sparsely represent its descriptor set, and the most appropriate dictionary was determined by the representation error, …


Design And Realization Of Optimization System For Rice Type, Weilong Ding, Lifeng Xu, Wei Yang, Gao Nan 2020 College of Computer Science & Technology, Zhejiang University of Technology, Hangzhou 310023, China;

Design And Realization Of Optimization System For Rice Type, Weilong Ding, Lifeng Xu, Wei Yang, Gao Nan

Journal of System Simulation

Abstract: It is widely accepted that in traditional crop ideotype breeding, field trials are time-consuming, yet lacking appropriate ways to evaluate the target morphology to be optimal. In order to obtain ideal crop plant type quickly and automatically, meanwhile to reduce the side effects caused by manual operations in the processes of plant type design, e.g. the growing of labor costs and uncertainty of the outcome, a method based on genetic algorithms (GAs) and functional-structural plant model (FSPM) was proposed in this study to optimize plant type of virtual rice by dynamically adjusting phenotypical traits of rice plants. Based on …


3d Reconstruction Of Weak Texture Image Based On Tensor Voting And Dense Map Method, Mingwei Chen, Yang Yang 2020 1. Kunming University of Science and Technology, Kunming 650500, China;;

3d Reconstruction Of Weak Texture Image Based On Tensor Voting And Dense Map Method, Mingwei Chen, Yang Yang

Journal of System Simulation

Abstract: Image based 3D reconstruction method can't effectively detect and match feature points and can't robustly expand 3D point cloud in weak texture image region, due to the fact that weak texture has single color and local reflection phenomenon. It is possible to produce model hole and a large number of 3D noise points, and affect the accuracy and integrity of 3D reconstruction. Slack variables constraint was used to filter mismatch features optimizing the camera matrix, in the dense point cloud expansion stage by using tensor voting principle to filter noise 3d point which is inconsistent with three-dimensional point's normal …


Research Of Virtual Reality Technology In The Treatment Of Anxiety Disorders And Autism, Cuijuan Liu, Liu Zhen, Tingting Liu, Lu Tao, Fang Hao, Liangping Liu 2020 1. Faculty of Information Science and Technology, Ningbo University, Ningbo 315211, China;;2. Intelligent Control Research Institute, Zhejiang Wanli University, Ningbo 315101;

Research Of Virtual Reality Technology In The Treatment Of Anxiety Disorders And Autism, Cuijuan Liu, Liu Zhen, Tingting Liu, Lu Tao, Fang Hao, Liangping Liu

Journal of System Simulation

Abstract: The research of virtual reality technology in the adjuvant treatment of mental diseases has caused wide concern. Anxiety disorders and autism are two major mental diseases in today's society, which has been plagued by both adults and children. Conducting anxiety and autism's rehabilitation has important practical significance. The research of virtual reality technology application in anxiety disorders and autism was reviewed, emotion regulation in the adjuvant treatment of mental diseases was discussed, emotion agents and emotion models were summarized, a technical roadmap of emotion adjuvant treatment for mental diseases was proposed, the architecture of emotion agent was constructed, and …


Research Of Diffusion-Based Molecular Oscillation And Synchronization In Nanonetworks, Feiyan Li, Lin Lin, Shiwei Ma 2020 School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072, China;

Research Of Diffusion-Based Molecular Oscillation And Synchronization In Nanonetworks, Feiyan Li, Lin Lin, Shiwei Ma

Journal of System Simulation

Abstract: Nanonetworks, the interconnection among nanomachines at nanoscale, is a novel kind of communication and information sharing interdisciplinary technology, and have huge potential prospects in the application of biomedical engineering, environmental monitoring, industrial production and military. Nanomachine is considered to be the basic functional unit, and clock period caused by oscillators is a prerequisite for nanomachines to work. A mathematical model was developed to describe the molecular diffusion characteristics giving the oscillation period expression by theoretical deviation. Research on oscillation and synchronization in nanonetworks is very limited so far, so the study is of great significance to the development and …


Graphic Method To Simulate Planar Arrays Pattern, Shuchun Zhang, Yongbin Qiu, Jiang Wei, Wei Xin 2020 Air Force Harbin Flight Academy Flight Simulation Technology Institute, Harbin 150001, China;

Graphic Method To Simulate Planar Arrays Pattern, Shuchun Zhang, Yongbin Qiu, Jiang Wei, Wei Xin

Journal of System Simulation

Abstract: Calculating planar arrays pattern is time-consuming in flight simulation whose frame synchronization time is within tens of milliseconds and this would cause removing frames. To resolve this problem, a graphic simulation method was presented to simulate planar arrays' pattern. Based on analyzing ideal patterns' graphic characteristics, a kernel function was constructed whose graphics could reflect all those pattern's characteristics. Then this kernel's graphics being used as a section plane were rotated in the spatial coordinates to match the ideal pattern. The simulation results show that this method can be rapidly calculated and the simulated pattern is highly true to …


Synthetic Aperture Radar Signal Simulation Of Ships On Sea Surface, Guijie Diao, Xiaojian Xu, Ni Hong, Junjie Lu 2020 1. Beijing Electro-mechanical Engineering Institute, Beijing 100074, China;;

Synthetic Aperture Radar Signal Simulation Of Ships On Sea Surface, Guijie Diao, Xiaojian Xu, Ni Hong, Junjie Lu

Journal of System Simulation

Abstract: A synthetic aperture radar (SAR) signal simulation method for ship targets on sea surface was proposed and the SAR signature model was established. The ship six degrees freedom motion model, the sea surface complex reflection coefficient model and the target electromagnetic scattering model were introduced. Based on the high frequency electromagnetic scattering calculation method and multi-path electromagnetic scattering, the electromagnetic coupling scattering and the time-varying characteristics were simulated. By comparing and analyzing the imaging results of the simulated SAR signal in different states, the physical scattering characteristics of ship targets on sea surface was realistically reflected, at the same …


Discrete-Event Simulation-Engine Technology Based On Mailbox-Mechanism In C4Isr System, Wendi Cheng, Fengxin Sun, Chu Wei 2020 1. The 28th Research Institute of China Electronic Group Corporation, Nanjing 210007, China;;2. Science and Technology on Information Systems Engineering Laboratory, Nanjing 210007, China;

Discrete-Event Simulation-Engine Technology Based On Mailbox-Mechanism In C4Isr System, Wendi Cheng, Fengxin Sun, Chu Wei

Journal of System Simulation

Abstract: For the design of discrete event simulation engine about combat simulation platform tools in C4ISR System, discrete events were divided into several types according to the C4ISR System's functional components and operational deduction process. The advantage of centralized management and convenient access was made use of by the mechanism of sending and receiving emails in mailbox to support the circulation of discrete events. Besides, the fixed-step driven and event-driven discrete event engine strategies were compared and analyzed. The result shows that, discrete event-driven clock algorithm, which can greatly reduce the consumed machine-time in simulation, is more applicable at …


Semi-Physical Simulation System Research For Marine Fuel Oil Purifier, Zhang Ning, Zhipeng Shen, Jizhong Liu, Haiwei Wang 2020 1. School of Foreign Languages, Dalian Maritime Univ., Dalian 116026, China;;

Semi-Physical Simulation System Research For Marine Fuel Oil Purifier, Zhang Ning, Zhipeng Shen, Jizhong Liu, Haiwei Wang

Journal of System Simulation

Abstract: Practical training in ship fuel oil purifier systems have lots of limitations including poor stability, development difficulties and high maintenance cost. A semi-physical simulation system for marine fuel oil purifier was proposed. According to the real ship control box, a fuel oil purifier control box was designed. A process simulation system was developed to simulate the fuel oil tube and purifier function, which could achieve the working process of purifier system and the phenomenon of fault alarm. The simulation system can reappear the working process of the oil purifier and simulate the fault conditions to improve the …


Mufti-Model Soft Modeling Based On Clustering In Evaporation Process, Peng Chen, Xiaoshan Qian 2020 1. She Wai School, Central South University of Forestry and Technology, Changsha 410004, China;;

Mufti-Model Soft Modeling Based On Clustering In Evaporation Process, Peng Chen, Xiaoshan Qian

Journal of System Simulation

Abstract: Based on the idea approach based on multi-model with a stronger robustness and precision, combining with strong coupling and the highly nonlinear characteristics in multi-effect evaporation process, a soft sensor modeling method of fuzzy kernel clustering was proposed based on differential evolution and multi-squares support vector machines. The method made clustering samples under different conditions by use of DE-KFCM, each sub-models were constructed using LSSVM using fuzzy clustering algorithm to cluster the input data under different conditions, and finally get the system output by weighting. Taking alumina evaporation process as an example, for the soft sensor modeling of export …


Research On Prediction Method Of Army Equipment Support Requirement Based On Operation Simulation Case- Reasoning, Yaxin Tan, Fan Rui, Xiao Dong 2020 Department of Equipment Command and Management, The Academy of Armored Forces Engineering, Beijing 100072, China;

Research On Prediction Method Of Army Equipment Support Requirement Based On Operation Simulation Case- Reasoning, Yaxin Tan, Fan Rui, Xiao Dong

Journal of System Simulation

Abstract: Aiming at the question of army equipment support requirement prediction, a new mechanism based on simulation case-based reasoning was proposed. The method was given how to describe the simulation case based on characteristic vector, and put forward the constriction of simulation case which contains primary case and accessory case, and two-steps reasoning mechanism using the conception of similarity was researched. Then, some algorithms of similarity between cases were improved and the general flow was expounded. The operation simulation case library was built applying in the requirement prediction of army equipment support. The result of reasoning proves the effectivity and …


Design And Implementation Of Hardware-In-The-Loop Simulation Dynamic Routing Protocol, Xiaohu Liu, Yuchen Zhang, Qingpo Fang, Leigang Sun 2020 Information Engineering University, Zhengzhou 450000, China;

Design And Implementation Of Hardware-In-The-Loop Simulation Dynamic Routing Protocol, Xiaohu Liu, Yuchen Zhang, Qingpo Fang, Leigang Sun

Journal of System Simulation

Abstract: Against the problem of dynamic routing in network Hardware-In-The-Loop Simulation, on the basis of analysis of network HITL simulation principle, a dynamic routing protocol implementation scheme based on OMNeT++ was proposed. A method of routing message transform and a algorithm of time slice synchronize was proposed, overcoming the problem of routing message transform and system real-time. At the same time, using virtual IP technology for multi-host configuration, and OSPF dynamic routing protocol, the Hardware-In-the-Loop Simulation Dynamic Routing Protocol based on OMNeT++ was realized. The dynamic routing protocol with multi scenarios was verified and tested.


Order-Independent Image Compositing In Heterogeneous Environments, Liu Ning, Dengming Zhu, Zhaoqi Wang, Shi Min 2020 1. Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, China;;2. University of Chinese Academy of Sciences, Beijing 100049, China;;

Order-Independent Image Compositing In Heterogeneous Environments, Liu Ning, Dengming Zhu, Zhaoqi Wang, Shi Min

Journal of System Simulation

Abstract: Conventional image compositing algorithms are designed for homogeneous environments. These algorithms do not take heterogeneity into account and do not make use of the properties of an order-independent compositing operator. As for order-independent image compositing problems in a heterogeneous environment, these algorithms usually can not make full use of the resources. An order-independent image compositing algorithm in heterogeneous environments was proposed, which was able to distribute the workload according to computing and networking characteristics, and managed to optimize compositing scheme by utilizing the properties of order-independent operator. A comprehensive evaluation on the ns-3 network simulator was conducted. Experiment results …


Chinese Shadow Play Simulation Based On Volume Visualization, Shenghua Wang, Tan Jian 2020 1. School of Public Administration and Communication, Beijing Information Science Technology University, Beijing 100192, China;;

Chinese Shadow Play Simulation Based On Volume Visualization, Shenghua Wang, Tan Jian

Journal of System Simulation

Abstract: Protection and preservation of the scene of shadow play is an urgent mission for the Chinese shadow play sustainable development. So far the visual effect is inadequate since shadow plays are always considered as two-dimensional images moving on visualization purpose, which drags down reproduction of the scene. Therefore, intact and lifelike reproduction of 3-D visual information of shadow play is the only task in the study. After an analysis of vision generation process of shadow play, a theoretical model was proposed including screen, puppets and light source, and a corresponding GPU volume rendering method for the play visualization was …


Research On Attitude Controller Based On Modified Adaptive Robust Sliding Mode In Low-Flying, Yunjie Wu, Chuang Song, Jingxing Zuo 2020 1. State Key Laboratory of Virtual Reality Technology and System, Beihang University, Beijing 100191, China;;2. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191 , China;;3. Science and Technology on Aircraft Control Laboratory, Beihang University, Beijing 100191, China;

Research On Attitude Controller Based On Modified Adaptive Robust Sliding Mode In Low-Flying, Yunjie Wu, Chuang Song, Jingxing Zuo

Journal of System Simulation

Abstract: Regarding inertia uncertainties, external disturbances and severe nonlinear coupling factors among the three channels including pitching, yawing and rolling at low-flying, controller design of wide adaptability could quickly and precisely realize the spacecraft attitude tracking control in a limited time. Based on the nonlinear model of the aircraft attitude, a kind of modified controllers was designed based on a robust adaptive sliding mode controller in the finite time convergence among three channels, the controller is continuous and differentiable. The adaptive controller was improved to stop a large controller output. Simulation results show that the designed attitude controller can …


Control System Design Based On Integral Sliding Mode Of Quadrotor, Zengqiang Chen, Chenlu Wang, Li Yi, Zhang Qing, Mingwei Sun 2020 1. Key Lab of Intelligent Robotics, College of Computer and Control Engineering, Nankai University, Tianjin 300071, China;;2. College of Science, Civil Aviation University of China, Tianjin 300300, China;

Control System Design Based On Integral Sliding Mode Of Quadrotor, Zengqiang Chen, Chenlu Wang, Li Yi, Zhang Qing, Mingwei Sun

Journal of System Simulation

Abstract: A double closed-loop control system based on integral sliding mode was proposed to solve the problems of position and attitude control of an under-actuated, nonlinear coupling quadrotor model. An integral sliding mode control method was applied in the inner loop attitude control and a PID controller was designed in the outer loop position control. Due to the under-actuated property of the quadrotor model, desired pitch and roll angles were given by outer loop controller. The stability of the designed control system was proved by Lyapunov stability theorem. Simulation results on Matlab show the effectiveness of the proposed control system …


Practice Method For Modeling The Virtual Group Organization Synergy, Zhang Hui, Zhang Hong, Sikun Li, Zeng Liang 2020 1. Navy Submarine Academy, Qingdao 266071, China;;

Practice Method For Modeling The Virtual Group Organization Synergy, Zhang Hui, Zhang Hong, Sikun Li, Zeng Liang

Journal of System Simulation

Abstract: The process to model the behaviors of virtual group has been divided into two stages, task interaction design and abstraction of the model. In the first stage, the task process is designed through task decomposition, interaction design and behaviors determination based on task decomposition. In the second one, the organization synergy model is presented by designs on three different levels, the structure level, the element level and the relation level, based on the design of the primary analysis. The method provides a framework to instruct the modeling work of virtual group organization synergy.


Calculation Of Vessel's Geometric Properties Based On Stl Model, Chunlei Liu, Yin Yong, Xiaofeng Sun, Xiufeng Zhang 2020 Navigation College, Dalian Maritime University, Dalian 116026, China;

Calculation Of Vessel's Geometric Properties Based On Stl Model, Chunlei Liu, Yin Yong, Xiaofeng Sun, Xiufeng Zhang

Journal of System Simulation

Abstract: To improve the accuracy of the ship geometric properties calculation and the real-performance of the program, a method based on STL triangular mesh model was proposed to calculate the ship geometric properties. SH polygon clipping algorithm in computer graphics was used to calculate the intersection of ship and water plane. By using of coordinates systems affine transformation, 3D water plane was changed to 2D plane to extract the profile contour. Because the waterlines are monotone polygon, Mass center insertion method was proposed to finish polygon triangulation, computing speed was improved. Bulk carrier "Taihang 128" was taken as an …


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