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 …
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 …
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 …
Multi-Character Animation Scene Construction Based On Crowd Patches,
2020
1. Department of Computer Science and Technology, Zhejiang University of Technology, Hangzhou 310023, China;;2. Key Laboratory of Visual Media Intelligent Process Technology of Zhejiang Province, Hangzhou 310023, China;
Multi-Character Animation Scene Construction Based On Crowd Patches, Wang Xin, Shao Lei, Shengyong Chen
Journal of System Simulation
Abstract: In order to simulate large-scale crowd motion, a synthesis method based on crowd motion patches is proposed. First, the characters' statistical model in a single crowd patch is obtained based on PCA by takingseveral sets of motion data with same semantics. An algorithm which controls the character's position in the motion crowd is proposed based on Voronoi diagram. A steady crowd motion model and detailed motion information of each character are achieved using the proposed algorithm. Finally, taking into account the random interactive motion of the crowd characters, we propose analgorithm that presents the interactions of characters …
Image Segmentation And Offset Correction Based On Minimal Relative Entropy Theoryand Level Set Method,
2020
1. Zhejiang Industry & Trade Vocational College, Wenzhou325000, China;;;
Image Segmentation And Offset Correction Based On Minimal Relative Entropy Theoryand Level Set Method, Xiuqiang Pan, Jinxiao Shan, Caifeng Yang
Journal of System Simulation
Abstract: The new variational level set method is achieved with the combination of the traditional level set method and the energy function which is established by means of statistical model according to the minimal relative entropy.The new method isappliedto object segmentation and offset correction in intensity heterogeneous image.Object segmentation and offset correction are unified according to the evolution of the level set function, anda deviation estimation function with intrinsic smooth feature is obtained.The results prove that the overlapping areas between different tissues are significantly decreased and more accurate results are achieved. In addition, this model is not …
Behavior Simulation Of Virtual Object Based On Physical Property,
2020
Institute of System Engineering, CAEP, Mianyang 621999, China;
Behavior Simulation Of Virtual Object Based On Physical Property, Yunbin Yang, Liangli He, Huaiyu Zhang, Lifan Wei
Journal of System Simulation
Abstract: At present, because of the complexity and real-time requirement, the modeling and simulation method proposed in virtual assembly and maintenance based on physical property is difficult to apply. The development actuality of modeling and simulation method based on physical property is simply investigated. Product hierarchy information model and its implementation method are established, and fast modeling method based on physical property is presented. Behavior property description of virtual object using matrix is established and behavior property of virtual object is depicted in cases of grasp/placement, movement and drop. Behavior simulation method including force input method and force feedback method …
Analysis And Optimization Of The Action Chain Mechanism In Agent2d Underlying In Robocup2d Soccer League,
2020
1. School of Arts and Sciences, Information Engineering University, ZhengZhou City, 450001, China;;
Analysis And Optimization Of The Action Chain Mechanism In Agent2d Underlying In Robocup2d Soccer League, Chen Bing, Feifan Xu, Hanyan Xu, Zekai Cheng, Liu Cheng
Journal of System Simulation
Abstract: In the RoboCup2D soccer league, Agent2D is one of the most widely used underlying team in China. Data transmission noise and the incomplete action chain mechanism make the underlying teams using Agent2D be lack of flexibility. This paper introduces an action correcting parameter and optimizes the operation of the action chain by reinforcement learning mechanism. The performance of the Agent2D underlying team is improved in the game and the adaptability of the team is enhanced. Simulation experiment results show that this method has a certain effect.
Virtual Ceramic Art Creation And Simulation Based On Osg,
2020
1. Collaborative innovation center of creative design and manufacturing of The China Academy of Art, Hangzhou 310024, China;;2. Interactive Arts and Technology Research Institute, The China Academy of Art, Hangzhou 310024, China;;
Virtual Ceramic Art Creation And Simulation Based On Osg, Zhao Zhi, Jianwen Song, Tiejun Li, Luo Yan, Wang Bo, Zhigeng Pan
Journal of System Simulation
Abstract: It is so complicated that artist would keep away from multiple related software file format conversion with independent software systems, when artist creates works of ceramic art with CAD. Therefore, many people are still engaged in making ceramic art using traditional methods at present. With the continuous improvement of the quality of Chinese social life, people's demand for ceramic art is increasing and artist's works could not meet the needs of people. This paper study the key technology that enable non-professional people to experience the whole process of Casting, Glazing, Firing and Finishing with VR and to enjoy their …
Loitering Munition's Speediness Prototype And Integrated Modeling Based On X-Plane,
2020
1. Northwest Institute of Nuclear Technology, Xi'an 710024, China;;2. Department of UAV Engineering, Ordnance Engineering College, Shijiazhuang 050003, China;
Loitering Munition's Speediness Prototype And Integrated Modeling Based On X-Plane, Zengyan Li, Xiaomin Li
Journal of System Simulation
Abstract: Aiming at the difficulty and long cycle of R&D in mathematical modeling and aerodynamic parameters analysis during the process of loitering munition's preliminary design and verification, the speediness prototype and integrated modeling method based on X-Plane is proposed. The loitering munition's characteristics is analyzed. Meanwhile, the operation mechanisms of various simulation methods are summarized. The principle of X-Plane is also analyzed. Speediness prototype is realized through modeling, which is independent of the mathematical model and aerodynamic parameters. The airfoil and blade design are improved and special controls are implemented, such as mixing, parachute and folding …
Pose Estimation Using Convolutional Neural Network With Synthesis Depth Data,
2020
1. Jiangnan University, Wuxi 214122, China;;
Pose Estimation Using Convolutional Neural Network With Synthesis Depth Data, Wang Song, Fuchang Liu, Huang Ji, Weiwei Xu, Hongwei Dong
Journal of System Simulation
Abstract: 3D scenes can be reconstructed more easily and rapidly with depth camera. However, it is difficult to retrieve items in 3D scenes from a single view depth image, especially for the pose estimation. In this paper, we present a method of pose estimation using convolutional neural network with synthesis depth data, which predicts the items' pose in 3D scenes by regression. This is achieved by (i) synthesizing large amount of depth images with different pose for linear regression using 3D model, (ii) designing a class-dependent linear regression framework, which estimates the object's pose from different classes separately, …
Key Technologies Of Precaution And Prediction Of Abnormal Spatial-Temporal Trajectory: A Review Of Recent Advances,
2020
1. College of Command and Control Engineering, The Army Engineering University of PLA,Nanjing 210002, China;;
Key Technologies Of Precaution And Prediction Of Abnormal Spatial-Temporal Trajectory: A Review Of Recent Advances, Gongda Qiu, He Ming, Yang Jie, Yuting Cao, Jihong Sun
Journal of System Simulation
Abstract: The ex-post disposition of a major incident, which is expected to transform into prediction and precaution of abnormal behavior, is increasingly unable to meet the urgent needs of the society.Therapid development and popularization of sensor network and positioning technology lay the foundation for mining spatial-temporal trajectory data. With the key objective of prediction and precaution of abnormal trajectory based on big data mining, the future research directions and prospects on trajectory clustering and recognitionareanalyzed, discussed and elaboratedinthis paper.Temporal trajectory prediction applied in prediction and precaution of abnormal spatial-temporal trajectory is also presented, providing a reference for further research on …
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 …
Realistic Simulation Of Potted Monocot Plant Based On Ifs,
2020
Northwest A&F University, College of Information Engineering, Yangling 712100, China;
Realistic Simulation Of Potted Monocot Plant Based On Ifs, Fanxing Zhang, Feiya Lu, Meili Wang
Journal of System Simulation
Abstract: Potted monocot plants are one of the most indispensable plants for landscaping and environment. This paper establishes 3D geometric model of branches, twigs, branches and leaves of potted monocot plants with adjustable morphology parameters based on iterated function system. Specifically, considering the self-similarity and randomness of branch bifurcation structure, a corresponding pruning operation module is established. The visualization of the pruning of the branch morphology with higher degrees of freedom is implemented through the affine transformation matrix and geometric model, producing more realistic computer simulation results. This paper provides guidance for the study and market selection of potted plants.
