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Articles 2161 - 2190 of 4524
Full-Text Articles in Computer Sciences
Real-Time Simulation On Virtual Dressing Based On Virtual Human Body Model, Chuanyu Xue, Hongwei Dong, Mingmin Zhang, Zhigeng Pan
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, Guojun Chen, Yingying Huang, Li Hua, Jinling Li, Jingyi Liu
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, Zhang Yuan, Jiang Hao, Dengming Zhu, Zhaoqi Wang
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, Chunlian Yao, Shengnan Feng, Fangfang Zhang, Huilin Si
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, Huanxi Zhao, Qiu Xia
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, Li Feng, Wan Gang, Bingchuan Jiang, Xuefeng Cao
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, Liping Lin, Yaping Zhang
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, Wang Xin, Shao Lei, Shengyong Chen
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, Xiuqiang Pan, Jinxiao Shan, Caifeng Yang
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, Yunbin Yang, Liangli He, Huaiyu Zhang, Lifan Wei
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, Chen Bing, Feifan Xu, Hanyan Xu, Zekai Cheng, Liu Cheng
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.
Augmented Reality System Based On Depth Image Segmentation And Object Tracking, Jiabo Yang, Yang Gang, Yang Meng
Augmented Reality System Based On Depth Image Segmentation And Object Tracking, Jiabo Yang, Yang Gang, Yang Meng
Journal of System Simulation
Abstract: In this paper, an augmented reality scheme that can achieve the virtual-real objects' interaction effectively is proposed. The depth camera, such as Kinect, is adopted to capture the depth image of scene, and then the segmentation and dynamic tracking of the scene objects are implemented based on the depth image. In the scene segmentation, we propose a scene segmentation strategy based on the prior knowledge. The large plane objects existing in the scene are firstly recognized according to the prior knowledge. Then, the clustering segmentation is applied to the remaining points to get the scene objects. This strategy is …
Virtual Ceramic Art Creation And Simulation Based On Osg, Zhao Zhi, Jianwen Song, Tiejun Li, Luo Yan, Wang Bo, Zhigeng Pan
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, Zengyan Li, Xiaomin Li
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, Wang Song, Fuchang Liu, Huang Ji, Weiwei Xu, Hongwei Dong
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, …
Study On Fusion Algorithms Of Gf-2 Satellite Image, Shiqin Xie, Tianzhong Zhao, Wang Wei, Jingjing Shi
Study On Fusion Algorithms Of Gf-2 Satellite Image, Shiqin Xie, Tianzhong Zhao, Wang Wei, Jingjing Shi
Journal of System Simulation
Abstract: This paper compared 4 kinds of image fusion methods through the GF-2 panchromatic and multispectral data fusion test. The subjective qualitative evaluation and objective quantitative evaluation were applied to analyze the quality of the fusion images, which were classified by the maximum likelihood method to select the suitable fusion method for GF-2 image. Test results showed that, among the four fusion methods, Pansharp transform achieved better fusion effect. It had the best subjective and objective qualitative evaluation; It had the highest overall classification accuracy in the maximum likelihood classification test. The experiment results indicated that the Pansharp transform had …
Performance Analysis Of Digital Refocusing Process Based On Light Field Imaging, Suping You, Yucheng Lu, Zhang Wei, Yang Bo
Performance Analysis Of Digital Refocusing Process Based On Light Field Imaging, Suping You, Yucheng Lu, Zhang Wei, Yang Bo
Journal of System Simulation
Abstract: Digital refocusing is one of the important properties of light field imaging, and the analysis of its performance has important reference value for the study of light field imaging. In this paper,two different digital refocusing algorithms based on the microlens array light field camera (LFC) in spatial and frequency domain are presented. We study the influences of different domains, interpolation methods and sample radius in digital refocusing algorithm on image quality and computation speed. And we yield a tradeoff between image quality and time consumption in two domains. Experiment results suggest that the two algorithms can achieve digital refocusing …
Fruit Recognition Using Support Vector Machine Based On Deep Features, Santi Kumari Behera, Amiya Kumar Rath, Prabira Kumar Sethy
Fruit Recognition Using Support Vector Machine Based On Deep Features, Santi Kumari Behera, Amiya Kumar Rath, Prabira Kumar Sethy
Karbala International Journal of Modern Science
Fruit recognition with its variety classification is a promising area of research. This research is useful for monitoring and categorizing the fruits according to their kind with the assurance of fast production chain. In this research, we establish a new high-quality dataset of images containing the five most popular oval-shaped fruits with their varieties. Recent work in deep neural networks has led to the development of many new applications related to precision agriculture, including fruit recognition. This paper proposes a classification model for 40 kinds of Indian fruits by support vector machine (SVM) classifier using deep features extracted from the …
Synthesis, Characterisation And Biological Evaluation Of Tyramine Derived Schiff Base Ligand And Its Transition Metal(Ii) Complexes, Abdul Khader Jailani, N.S.K. Gowthaman, Mookkandi Palsamy Kesavan
Synthesis, Characterisation And Biological Evaluation Of Tyramine Derived Schiff Base Ligand And Its Transition Metal(Ii) Complexes, Abdul Khader Jailani, N.S.K. Gowthaman, Mookkandi Palsamy Kesavan
Karbala International Journal of Modern Science
In this study, a new tyramine derived Schiff base ligand (L) (L=1,3-phenylene-bis-4-aminoantipyrinyl-4-aminoethylphenol) and its derived transition metal(II) complexes [Cu(L)Cl2](1), [Ni(L)Cl2](2), [Co(L)Cl2] (3) and [Zn(L)Cl2] (4) have been synthesized and well characterized by the way of different spectroscopic and analytical techniques. Analytical and spectroscopic studies result suggests that metal(II) complexes more probably have octahedral geometry. DNA binding tendency of L and metal(II) complexes 1-4 have been assessed by probing their ability to bind with Calf Thymus DNA (CT-DNA) via electronic absorption and cyclic voltammetry titration methods. The results clearly reveal that the metal(II) …
Evaluation Of Structure And Properties Of Various Sol–Gel Nanocoatings On Biomedical Titanium Surface, Mohsin Talib Mohammed, Sarah Mohammed Hussein
Evaluation Of Structure And Properties Of Various Sol–Gel Nanocoatings On Biomedical Titanium Surface, Mohsin Talib Mohammed, Sarah Mohammed Hussein
Karbala International Journal of Modern Science
This study deals with the preparation and characterization of different bioceramic nanofilms formed on the surface of new metastable β-titanium (Ti) alloy. The films of pure TiO2, pure HA, TiO2/HA bilayer and HA/TiO2 composite were coated successfully on Ti surface by sol-gel using spray pyrolysis deposition technique. The surface characteristics of coated substrates, such as thickness, topography, morphology, phase transformations and wear behavior, were evaluated and compared to uncoated substrate. The results showed that the sol-gel is a promising technique to create biocoatings on Ti surface with outstanding structure and properties for biomedical applications.
On The Dynamic Behaviour Of Automobile Pulleys Under Cyclic Loading, Haval Kamal Asker, Thaker Saleh Dawood
On The Dynamic Behaviour Of Automobile Pulleys Under Cyclic Loading, Haval Kamal Asker, Thaker Saleh Dawood
Karbala International Journal of Modern Science
This paper investigates the dynamic characteristics of pulley systems with different numbers of bolt holes. Models with four, six and eight bolt holes were chosen for the pulley. Three sets of cyclic pressure were applied to the pulley system to resemble the different running revolutions of an engine. The study investigates the effect of the number of holes on the system’s stiffness and natural frequency. Finite element models were used to simulate the obtained deformations, stresses and frequency response function (FRF) for pulley models comprising four, six and eight bolt holes under different cyclic pressures. The results show that the …
Direct Line Routing Protocol To Reduce Delay For Chain Based Technique In Wireless Sensor Network, Haydar Abdulameer Marhoon, Raaid Alubady, M. K. Abdulhameed
Direct Line Routing Protocol To Reduce Delay For Chain Based Technique In Wireless Sensor Network, Haydar Abdulameer Marhoon, Raaid Alubady, M. K. Abdulhameed
Karbala International Journal of Modern Science
The main objective of routing protocol is to select the next-hop connection node for packets traveling from source to distention. Greedy algorithm depends on the distance only to select the next-hop connection and it is building one chain only. Delay is considering the main drawback in all chain based routing protocols in the wireless sensor network. Direct Line Routing Protocol (DLRP) is a proposed protocol in this scientific research and it has three phases which are intraconnection, interconnection and chain head selection. DLRP connects all sensor nodes in the same line (column) in one chain then selects one node as …
Optically Thick Radiating Free Convective Mhd Nanofluid Flow Over An Exponentially Accelerated Plate, D.P. Bhatta, S.R. Mishra, J.K. Dash
Optically Thick Radiating Free Convective Mhd Nanofluid Flow Over An Exponentially Accelerated Plate, D.P. Bhatta, S.R. Mishra, J.K. Dash
Karbala International Journal of Modern Science
The present analysis investigates an unsteady conducting water-based nanofluid embedding with porous medium over an exponentially accelerated vertical plate. The plate is accelerated with moving ramped temperature. However, water is treated as the base fluid with Copper (Cu) and Titanium Oxide (TiO2) as nanoparticles. Effects of thermal radiation, heat source, and radiation absorption are taken care of in the energy equation which may enhance the heat transfer properties of nanofluid. The crux of the investigation is to find the closed-form solution of nonlinear coupled partial differential equations. Laplace Transform technique is employed to solve these equations. The influence …
A Support Vector Machine-Based Prediction Model For Electrochemical Machining Process, Subham Agarwal Mr., Shruti Sudhakar Dandge Ms., Shankar Chakraborty Prof.
A Support Vector Machine-Based Prediction Model For Electrochemical Machining Process, Subham Agarwal Mr., Shruti Sudhakar Dandge Ms., Shankar Chakraborty Prof.
Karbala International Journal of Modern Science
Manufacturing of quality products is one of the core measures to address competitiveness in industries. Hence, it is always necessary to accomplish quality prediction at early stages of a manufacturing process to attain high quality products at the minimum possible cost. To achieve this goal, the past researchers have developed and investigated the applications of different intelligent techniques for their effective deployment at various stages of manufacturing processes. In this paper, support vector machine (SVM), a supervised learning system based on a novel artificial intelligence paradigm, is employed for prediction of three responses, like material removal rate, surface roughness and …
Influence Of Carbon Fibres On Strain Sensing And Structural Properties Of Rc Beams Without Stirrups, Arvind Kumar Cholker, Manzoor Ahmad Tantray
Influence Of Carbon Fibres On Strain Sensing And Structural Properties Of Rc Beams Without Stirrups, Arvind Kumar Cholker, Manzoor Ahmad Tantray
Karbala International Journal of Modern Science
In present study, effect of micro carbon fibres on strain sensing property and structural behavior of the reinforced concrete (RC) beams in absence of stirrups was experimentally investigated. A total of three RC beams of dimensions, 125 mm width, 350 mm height and 1500 mm long were manufactured without stirrups. All the three beams had different longitudinal reinforcement ratios (0.9%, 1.43% and 1.03 %) and uniform strength of concrete of 36.5 MPa. All the beams had carbon fibre based concrete (CFBC) at top and bottom surface in mid span for a length of 350mm and depth of 78 mm. All …
Approximating Fixed Points In Modular Spaces, Salwa Salman Abed, Meena Fouad Abduljabbar
Approximating Fixed Points In Modular Spaces, Salwa Salman Abed, Meena Fouad Abduljabbar
Karbala International Journal of Modern Science
A generic two theorems for the two step iterative sequence of multivalued mappings are proved in a complete convex real modular space, and then cite some corollaries that are special cases of these theorems.
Technique Pair Of Node To Provide Power In Wsns, Nada B. Jarah
Technique Pair Of Node To Provide Power In Wsns, Nada B. Jarah
Karbala International Journal of Modern Science
The problem of exhaustion of the battery in the sensor node is one of the problems in traditional wireless sensor networks (WSNs) and charging in a hibernate state, which occurs frequently to assume the traditional connection, which delays data collection. To solve this problem, we propose node pair technology to reduce unnecessary packets in the send of same data as the connection between the short distance sensor nodes is prevented to improve data collection efficiency, the node pair effectiveness ratings have been conducted by computer simulation.
Development And Future Trend Of Computer Simulation And Quantum Computer Simulation, Wenhui Fan, Jiahui Wu
Development And Future Trend Of Computer Simulation And Quantum Computer Simulation, Wenhui Fan, Jiahui Wu
Journal of System Simulation
Abstract: The development status of computer simulation in America and the development status of computer simulation in China were summarized; On the base of the comprehensive analysis of the development of quantum computing, the quantum computer based simulation（QCBS） was proposed, and the research fields of quantum computer based simulation were given including simulation modeling theory, simulation system and simulation application of QCBS; The application prospects of QCBS, such as applying in intelligent simulation, virtual simulation, parallel simulation and cloud computation based simulation, were proposed.
Source Location Algorithm Based On Chaos Artificial Bee Colony Algorithm, Yecai Guo, Weiwei Ma, Sainan Zhu
Source Location Algorithm Based On Chaos Artificial Bee Colony Algorithm, Yecai Guo, Weiwei Ma, Sainan Zhu
Journal of System Simulation
Abstract: Aiming at defects of large computational complex and poor real-time performance of the traditional power controlled response and phase transformation (Steering response power-phase transform, SRP-PHAT) based source localization algorithm, a novel SRP-PHAT source localization algorithm based on chaos artificial bee colony algorithm was proposed. In this proposed algorithm, the beam power function of the microphone array was used as the objective cost function to establish the mathematical model of the source localization, the global coverage of chaos and fast convergence speed and strong robustness of the artificial colony algorithm were combined to realize 3D localization of the sound source. …