Pcnl: A Visual Analysis Method For Comparing Homogeneous Hierarchical Data,
2020
Beijing Key Laboratory of Big Data Technology for Food Safety, School of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, China;
Pcnl: A Visual Analysis Method For Comparing Homogeneous Hierarchical Data, Dong Yu, Chen Yi, Yuehong Sun
Journal of System Simulation
Abstract: According to the requirements of comparing homogeneous hierarchical data in different fields, a visual analysis method called PCNL is presented in this paper. Homogeneous information is extracted from the multiple levels of the heterogeneous hierarchical data set, and isomorphic node-link trees are constructed. Parallel coordinates are combined with node-link trees, which displays attribute values of leaf nodes in multiple isomorphic trees. Interactive techniques are introduced to help users to compare and analyze multiple attributes of each leaf node in multiplehomogeneous hierarchical structures. Applying this method to compare multi-national MRL data in food safety field can help users to …
Role And Background Effects Enhancement In Holographic Projection,
2020
School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China;
Role And Background Effects Enhancement In Holographic Projection, Desheng Lü, Zhiye Lin, Kong Lu
Journal of System Simulation
Abstract: Although holographic projection technology combined with three-dimensional animation can be seen on many shows nowadays, the poor ability to identity the black color and the high requirement for camera's placement, which lead to the lack of content and high complexity, have become main restrictions for the development of holographic animation. An algorithm is proposed to replace or adjust the lightness of black color in holographic animation to improve the projection. The linkage of camera in four directions is studied to facilitate the acquisition of holographic projection images, which enhances the holographic animation effect. Finally, a real projection platform …
Coveragedetecting Algorithm Based On Sub-Pixel Geometricprimitives,
2020
1. School of Computer Science and Technology, Changchun University of Science and Technology, Changchun130022, China;;2. National Local combined Engineering Research Center of Special Film Technology and Equipment, Changchun130000, China;
Coveragedetecting Algorithm Based On Sub-Pixel Geometricprimitives, Li Hua, Huamin Yang, Han Cheng, Jianping Zhao
Journal of System Simulation
Abstract: A hard shadow anti-aliasing rendering algorithm with sub-pixel accuracywas proposed. The method focused on addressing aliasing artifacts of the shadow map due to the sample density mismatching between light space and camera space. The method extracted geometric primitives from the scene's front view from a light source and storedscene visible triangles with fixed-size and local approximation using conservative rasterization; An algorithm was proposed to detect the covered plurality primitives in one texel based on the texel's vertices, and reconstruct testing depth of shadow ray precisely. The experiment results showed that covered primitives' detection algorithm was able toidentify …
Simulation On Switch Reluctance Motor Vibration Under Load Condition Based On Ansys,
2020
Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
Simulation On Switch Reluctance Motor Vibration Under Load Condition Based On Ansys, Luan Ru, Jinru Guo
Journal of System Simulation
Abstract: At present, the research on the vibration problem of switched reluctance motor is limited to the natural mode analysis under no-load condition. The coupling calculation of transient electromagnetic field and structure dynamic field in SRM is deduced. It is proved that the vibration results of SRM can be obtained under the load. An improved simulation method is proposed to improve the data link of Workbench ANSYS, and to realize the direct coupling of the whole data link between the transient electromagnetic field and the transient structural dynamic field. The simulation method is described in detail for a specific SRM …
3d Simultaneous Localization And Mapping Based On Rgb-D Images,
2020
1. School of Information Engineering, Nanchang University, Nanchang 330031, China;;
3d Simultaneous Localization And Mapping Based On Rgb-D Images, Lingyan Hu, Cao Lu, Pengwen Xiong, Xin Yong, Zekun Xie
Journal of System Simulation
Abstract: To reduce the accumulated pose error of robots during the three-dimensional simultaneous localization and mapping, a global optimization method is proposed to improve the positioning accuracy and the quality of the map. This method, which is based on the visual odometry of the frame and frame registration model, adds the pose-constraints by closed-loop detection based on image matching. Local loop is combined with random loop to improve the optimization efficiency. The general graph optimization algorithm is used to globally optimize the robot poses. A key-frame selection strategy is also proposed to decrease the consumption of the …
Flight Support Service Time Estimation Of Hub Airport,
2020
1. R&D Base of Special Ground Equipment, CAUC, Tianjin 300300, China;;2. College of Electronic Information and Automation, CAUC, Tianjin 300300, China;
Flight Support Service Time Estimation Of Hub Airport, Zhiwei Xing, Yunxiao Tang
Journal of System Simulation
Abstract: For the convenience of airport to publish the accurate information about flight status to passengers in time, estimating the service time of airport flight support is needed. Because the flight support service is a mixed procedure of job shop and fixed site, and has characteristics of time window constrains and resource demand difference, a model of flight support service procedure based on vehicle routing problem with time windows (VRPTW) was built. For the strong NP nature of vehicle routing problems, a two phase hybrid heuristic algorithm based on greedy algorithm and tabu search was proposed. It was applied to …
Fault Diagnosis Method Of Pmsm Based On Adaptive Dynamic Cat Swarm Optimization Of Svm,
2020
Engineering Research Center of Internet of Things Technology Applications Ministry of Education, Wuxi 214122, China;
Fault Diagnosis Method Of Pmsm Based On Adaptive Dynamic Cat Swarm Optimization Of Svm, Wang Yan, Wang Xin, Zhicheng Ji, Dahu Yan
Journal of System Simulation
Abstract: In order to solve the problems of common inter-turn short circuit faults of permanent magnet synchronous motor (PMSM), a corresponding motor fault model based on the existing basis of PMSM is established. The eigenvector is extracted by energy spectrum analysis. The penalty factor and RBF-kernel parameter of SVM are optimized by adaptive dynamic cat swarm optimization (ADACSO) algorithm. The optimized SVM is adopted to motor fault diagnosis. The eigenvector obtained by energy spectrum analysis is taken as sample data to conduct simulation experiment. The experiment results indicate that, compared with other optimization algorithms, using ADACSO to optimize …
Design And Implementation Of Online Interactive Educational Game Based On Somatosensory,
2020
1. Digital Media and HCI Research Center, Hangzhou Normal University, Hangzhou 310012;;
Design And Implementation Of Online Interactive Educational Game Based On Somatosensory, Ban Rui, Dandan Ding, Mingmin Zhang, Huaqing Shen
Journal of System Simulation
Abstract: The somatic game has been widely used in the educational field because of the advantages of excellent experience, multi sense and student-centered. But now, the commonly used somatic game equipment is based on PC, such as Kinect, which does not support browsing on web and requires long period development, failing to meet the teaching demands. This leads to the slow and imbalanced developments of somatic-based education game. To solve those problems, this paper puts forward a solution, which combines Websocket communication mechanism and Kinect recognition mode. In order to promote the integration of education and games, this paper further …
Ant Colony Search Skeleton Extraction Methodbased On Distance Transform,
2020
School of Mechanical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
Ant Colony Search Skeleton Extraction Methodbased On Distance Transform, Zhaoyuan Zhang, Dai Ning, Liu Hao, Dawei Li
Journal of System Simulation
Abstract: Forsolving the poor connectivity problems of skeleton extraction method based on distance transform, ant colony search skeleton extraction method based on distance transform is proposed. The objects potential skeleton points are obtained according to the distance transform and its gradient.By controlling the polygon approximation errorofthe object boundary curve, the boundary vertices with different contribution to the object shape information are determined,and the convex vertices are takenas the endpoints of the object'sskeletonline.The endpoints of redundant skeleton branches are eliminated according to the inner angle size of the endpoint .The heuristic guidance function is determined by distance transformation gradient, pixel …
Design And Implementation Of Virtual Treadmill System Supporting Natural Interaction,
2020
1. Digital Media and HCI Research Center, Hangzhou Normal University, Hangzhou 311121, China;;
Design And Implementation Of Virtual Treadmill System Supporting Natural Interaction, Zhigeng Pan, Congjin Liu, Yingying Ge, Qingshu Yuan
Journal of System Simulation
Abstract: By virtually displaying outdoor sports scene, virtual treadmill system can make running more interesting. How to interact naturally and effectively during running is an important issue in system design. Based on the gesture interaction region partition and analysis of Kinect data, we designed a gesture interaction protocol. The protocol supports menu interaction and content switch without interruption of human running process. We also designed and implemented a virtual treadmill system which utilizes OSG library and Unity3D for scene modeling. Serial port and Socket is used for status or sports data transmission. The system can displayed on a large monitor …
Design And Implementation Of 3d Monitoring System Based On Opc Ua,
2020
1. CIM Research Institute, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;;
Design And Implementation Of 3d Monitoring System Based On Opc Ua, Gu Yan, Huanchong Cheng, Wang Zhen, Xiumin Fan
Journal of System Simulation
Abstract: With the rapid development of industrial automation, users' demands on the safety of data collection, data transmission and data interaction during manufacturing process are increasing, along with which is the serious communication problem because of device heterogeneity. Besides, due to the rapid expansion of mobile application, more and more mobile devices such as mobiles and Pads are pouring into monitoring system. In this paper, a 3D monitoring system based on OPC UA is designed and implemented to meet the requirement of real-time and versatility of devices. The 3D monitoring system is composed of an OPC UA server and an …
Emergency Behavior Assessment System Based On Vr Fire Escape Game,
2020
1. Department of Computer Science and Engineering, East China University of Science and Technology, Shanghai 200237, China;;2. Key Laboratory of Geographic Information Science, Ministry of Education, East China Normal University, Shanghai, 200241, China;;
Emergency Behavior Assessment System Based On Vr Fire Escape Game, Gaoqi He, Mingqiang Yu, Zhengqing Jiang, Xingjian Lu
Journal of System Simulation
Abstract: Individuals' behavior and psychology have the typical features of complexity and dynamics under emergency, which is a great challenge for the realistic simulation of crowd behavior. In this paper, virtual reality and game technology are combined to design a virtual reality fire escape game (VRFEG), and the users' emergency behaviors are evaluated and analyzed effectively. VRFEG is mainly composed of four modules, i.e., interactive plot design, architecture design, data collection and behavior analysis. Experiment results show that the VRFEG system is very intuitive and easy to use. Such system could help people learn some emergency escape skills while immersing …
Fuzzy Sliding Mode Control Of Double Inverted Pendulum Based On Linear Adaptive Qpso Tuning,
2020
1. School of Automation & Information Engineering, Xi'an University of Technology, Xi'an 710048, China;;2. Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing, Xi'an 710048, China;;
Fuzzy Sliding Mode Control Of Double Inverted Pendulum Based On Linear Adaptive Qpso Tuning, Xin Jing, Xiangshuai Han, Yanming Liang, Cuicui Yan
Journal of System Simulation
Abstract: To solve the problem of balancing control of linear double inverted pendulum, fuzzy sliding mode control method based on linear adaptive QPSO tuning is presented. According to the coupling property of the linear double inverted pendulum system, decoupling is applied twice and fuzzy sliding mode balancing controller is designed. The parameters of fuzzy sliding mode controller are determined by the linear adaptive quantum particle swarm optimization algorithm (LAQPSO). Linear double inverted pendulum balancing control simulation results show that the proposed method can effectively reduce the chattering phenomenon existing in the traditional sliding mode controller and improve the accuracy and …
Real-Time Simulation On Virtual Dressing Based On Virtual Human Body Model,
2020
1. IoT Engineering College ,Jiang Nan University, Wuxi 214000, China;;
Real-Time Simulation On Virtual Dressing Based On Virtual Human Body Model, Chuanyu Xue, Hongwei Dong, Mingmin Zhang, Zhigeng Pan
Journal of System Simulation
Abstract: In this paper we put forward a real-time method of virtual dressing using a single Kinect device. Virtual dressing using a low-cost device has very important application, but classic 3D human body dressing algorithms cannot work in real time. We need to generate 3D human body model before virtual dressing using Kinect. In this paper, we use a method which is based on body's basic information to build human body model, and the method is optimized to enhance the local simulation results.This paper presents a tracking ellipsoid modeland applies GPU parallel computing to decrease the amount of calculation …
Triangular Mesh Clipping Using Triangular Decomposition,
2020
1. College of Computer and Communication Engineering, China University of Petroleum, Qingdao 266580, China;;
Triangular Mesh Clipping Using Triangular Decomposition, Guojun Chen, Yingying Huang, Li Hua, Jinling Li, Jingyi Liu
Journal of System Simulation
Abstract: Triangular mesh clipping is widely used in grid reconstruction, grid deformation, terrain fusion and analysis, and many other fields. In the application of geographic information system (GIS), triangular mesh clipping is the key to the fusion of terrain surface model and building model. However, existing polygon clipping algorithms do not take the space relationship of adjacent triangles into account.If they were directly used in triangular mesh clipping, T-intersections would appear in the cutting results, leading tounstable triangular mesh. In order to solve this problem, a triangular mesh clipping algorithm based on triangular decomposition is proposed. Triangular decomposition is implemented …
Human Contour Extraction Based On Skeleton Matching,
2020
1. Institute of Computing Technology, Chinese Academy of Sciences, Beijing, 100190, China;;2. Beijing Key Laboratory of Mobile Computing and Pervasive Device, Beijing, 100190, China;;3. University of Chinese Academy of Sciences, Beijing, 100049, China;
Human Contour Extraction Based On Skeleton Matching, Zhang Yuan, Jiang Hao, Dengming Zhu, Zhaoqi Wang
Journal of System Simulation
Abstract: To extract human contour in still images, we propose a human contour extraction method based on skeleton matching. Skeleton key points are points representing human skeleton in images. Optimal human contour key points corresponding to skeleton key pointscanbe extracted by constructing hidden Markov modelthrough skeleton key points and image pixels' edge information combined with human body morphology as prior knowledge. Few human contour key points can generate reasonable human contour. TheHermiteinterpolation is usedto connect these key points to obtain human contour. Experimentresults show thatour method can extract reasonable human contour in simple scene, andhas higher speed and achieves …
Vehicle-Distance Measurement Based On Plate Area,
2020
School of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, China;
Vehicle-Distance Measurement Based On Plate Area, Chunlian Yao, Shengnan Feng, Fangfang Zhang, Huilin Si
Journal of System Simulation
Abstract: Estimating the distance between two vehicles is very important for transport safety. In order to keep the driving safety and avoid the traffic accidents, the visual-based vehicle detection and vehicle distance measurement are studied. In order to improve the detection precision and shorten the testing time, frame difference is combined with adaboost algorithm to detect vehicle. In the part of distance measurement, a method to calculate the distance between vehicles based on the pixels size of the vehicle's plate area in the image is proposed. Firstly, the image of the rear end of the vehicle is processed for …
Three-Point Subdivision Scheme With Multi-Parameters For Reproducing Conic Splines,
2020
1. School of Computer & Information Engineering, Xiamen University of Technology, Xiamen 361024, China;;2. School of Information Science & Engineering, Central South University, Changsha 410083, China;
Three-Point Subdivision Scheme With Multi-Parameters For Reproducing Conic Splines, Huanxi Zhao, Qiu Xia
Journal of System Simulation
Abstract: A non-static and non-stationary three-point subdivision schemes with three parameters was proposed to generate piecewise C1 rational quadratic Bezier spline curves. In particular, for special values of the tension parameters, the proposed scheme will be capable of reproducing all conic sections exactly and conic spline curve. In addition, the proposed subdivision scheme is approximation-type, but the limit curve generated by such scheme interpolates the initial control points, and by selecting the appropriate parameters, the proposed scheme is circle-preserving, line-preserving, cusp-preserving. Numerical examples show that the proposed subdivision scheme has a strong modeling capability.
Spatio-Temporal Data Organization Model Of Unified Ground And Aerial Battlefield And Its Application,
2020
1. PLA Information Engineering University, ZhengZhou 450001, China;;2. State Key Laboratory of Geo-information Engineering, Xi'an 710043, China;
Spatio-Temporal Data Organization Model Of Unified Ground And Aerial Battlefield And Its Application, Li Feng, Wan Gang, Bingchuan Jiang, Xuefeng Cao
Journal of System Simulation
Abstract: Aiming at the requirement of battlefield environment data in joint operations, a spatio-temporal data organization model of unified ground and aerial battlefield based on grid division is proposed in this paper. The sphere grid division is adopted to divide the space to extend to the time dimension. Also, the spatio-temporal grid coding is designed. The field and object are combined to build the BSTD organization model, where the sphere layer and sphere volume grid unit are used separately as the reference space to quantitatively describe the field, and the spatio-temporal grid coding is adopted to describe the …
3d Scene Reconstruction Based On Mismatching Eliminating Algorithm,
2020
School of Information, Yunnan Normal University, Kunming 650500, China;
3d Scene Reconstruction Based On Mismatching Eliminating Algorithm, Liping Lin, Yaping Zhang
Journal of System Simulation
Abstract: For the case of mismatching in feature detection and matching based on SIFT algorithm, a method based on RANSAC is proposed in this paper to eliminate false matches. RANSAC treats all input data differently. An objective function is created and its parameters are estimated by iterative algorithm. All the data are divided into two categories based on the estimated parameters and the points that satisfy the estimated parameters are reserved and the points which do not satisfy the estimated parameters are eliminated. And then the function parameters are re-estimated with all the satisfied points. Experiment results show that …
