Layered Electro-Magnetic Refreshablebraille Display With Haptic Rendering,
2020
Virtual Reality Laboratory of Zhejiang Sci-Tech University, Hangzhou 310018, China;
Layered Electro-Magnetic Refreshablebraille Display With Haptic Rendering, Xinli Wu, Panfei Zhu, Wenzhen Yang, Zhongzheng Jin, Jianqiang Xuan, Xu Yan, Zhichao Zhu
Journal of System Simulation
Abstract: Refreshable braille display is an important application of haptic rendering in virtual reality.Aprototype of a layered electro-magnetic refreshablebraille displaywas developed, which has complex mechanical structures and a control system, and coulddynamical display of20braille words. By designing the layered and dislocatedbraille driving mechanism, this refreshablebraille displayrealizedthe arrangement of 120 braille points. By switchingthe current of the electromagnetic coils, the control system of this refreshablebraille displayrealizedthe movement control of these braille points. This prototype has the advantages of small volume, low cost, high refresh rate, and can generate enough supporting forcefor fingertip haptic reading braille.
Stereo Matching Based On Pyramid Transform Cross-Scale Cost Aggregation,
2020
1. Key Laboratory of Computer Network and Information Integration (Southeast University), Nanjing 211189, China;;2. State Key Laboratory for Novel Software Technology(Nanjing University), Nanjing 210032, China;;3. School of Computer Science and Engineering, Southeast University, Nanjing 211189, China;
Stereo Matching Based On Pyramid Transform Cross-Scale Cost Aggregation, Yao Li, Zhukui Liu, Bingfeng Wang
Journal of System Simulation
Abstract: Human visual system processes the received visual signals on different scales, however, the traditional stereo matching algorithms get the disparity map from the original image in the biggest scale, which will lead to high stereo matching error rate in the area of low-texture, texture-less area. Simulation of the human visual system in stereo matching on multiple scales can reduce error rate. A stereo matching method based on the Gaussian pyramid cross-scale transform was improved, by adding the Laplace Pyramid Transform to the original cross-scale framework and adding the weighted joint bilateral filter in the disparity refinement stage. The …
Model And Method Of Space Objects Multi-Scale Expression,
2020
1. Institute of Surveying & Mapping, Information Engineering University, Zhengzhou 450002, China;;
Model And Method Of Space Objects Multi-Scale Expression, Qunshan Shi, Chaozhen Lan, Liang Jing, Wanjie Lu, Wang Dong
Journal of System Simulation
Abstract: To allow users to acquire accurately and efficiently information, which they need, from vast amounts of space situational information, the thought of multi-scale expression was used, on the basis of analysis of various factors, which influenced space objects expression, multi-scale expression models were established, space objects multi-scale expression was achieved combined with the construction of the voronoi diagram. The experiments were done to verify the validity of the model and methods, the results show that: this method can largely control the amount and level of detail of information, can meet the requirements of clarity and legibility of space situational …
Research On Autonomous Intercept Method For Ucav Based On Lead Attack Aiming,
2020
1. Marine College, NWPU, Xi’an 710072, China;;2. Aeronautics & Astronautics Engineering Institute of AFEU, Xi’an 710038, China;;
Research On Autonomous Intercept Method For Ucav Based On Lead Attack Aiming, Huaxing Wu, Huang Wei, Fengju Kang, Hongbao Mao
Journal of System Simulation
Abstract: For the problem of autonomous intercepting moving target with air-to-air missiles for an unmanned combat air vehicle, autonomous guiding method based on lead attack aiming errors was studied. The aiming errors were computed by building the motion model of UCAV and the model of lead attack aiming. Then to meet the goal of decreasing the aiming errors during flight control, two maneuver strategies based on model predictive control approach were presented: one used proportional navigation method and the other employed simulated annealing particle swarm optimization algorithm. The simulation result shows that both strategies can implement autonomous intercept for targets …
Face Recognition Algorithm Based On Mixed Multiple Distance Image And Linear Discriminant Analysis,
2020
Hunan Industry Polytechnic, Changsha 410208, China;
Face Recognition Algorithm Based On Mixed Multiple Distance Image And Linear Discriminant Analysis, Yaling Cheng, Aiping Tan, Zhang Min
Journal of System Simulation
Abstract: The existing face recognition algorithms used in intelligent monitoring system are mainly applied to short distance images, which still have the problem of low face recognition rate when being applied to long distance images because the image quality decreases as the distance grows. To improve the face recognition accuracy in long distance images, a novel face recognition algorithm was proposed based on using mixed multiple different distance images and Linear Discriminant Analysis (LDA). The proposed algorithm used mixed images extracted from multiple different distances to train images, and used bilinear interpolation method to normalize the image set, and then …
Object Detection In Rgb-D Image Based On Annet,
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;
Object Detection In Rgb-D Image Based On Annet, Cai Qiang, Liwei Wei, Haisheng Li, Cao Jian
Journal of System Simulation
Abstract: The wide spread of depth images acquisition devices makes object detection in RGB-D images a hotspot in the field of computer vision. In order to make the features extracted by CNN more robust and to improve the detection accuracy, an improved CNN called ANNet was designed. To enhance the model discriminability of local patches within the receptive field, some linear convolutional layers in the AlexNet with nonlinear convolutional layers were replaced which contained multilayer perceptron against the linear feature between convolution filter and underlying data patch. The experiment result shows that the detection accuracy is improved by 3% in …
Kinematic Calibration Of Stewart Platform Based On Relative Visual Pose,
2020
1. State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing 100191, China;;2. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China;
Kinematic Calibration Of Stewart Platform Based On Relative Visual Pose, Ma Jin, Guofeng Zhang, Shuling Dai, Zeng Rui
Journal of System Simulation
Abstract: To improve the control accuracy of flight simulator motion system, a kinematic error analysis and calibration based on relative visual pose measurement of electric Six-DOF Stewart platform were proposed. Considering the structural characteristic of Stewart platform, a rotary compensation algorithm was concerned firstly to raise the control accuracy. Then kinematic error model and optimal calibration algorithm were established, according to kinematic equations and vector closed-loop characteristic. Latterly, pose data was achieved using Basler industrial camera and ID marker featured by CRC (Cyclic Redundancy Check) and FEC (Forward Error Correction). Finally, measurements and experiment results supported the validity of the …
Research Of Display Accuracy Improvement In Multi-Scale 3d Scene,
2020
Institute of Geographical Spatial Information, Information Engineering University, Zhengzhou 450001;
Research Of Display Accuracy Improvement In Multi-Scale 3d Scene, Pengfei Li, Zhou Yang, Jiwei Xu, Xiaofei Hu, Xianguang Xue
Journal of System Simulation
Abstract: In the multi-scale 3D scene, the single reference coordinate system has much application limitation due to the large spatial scale change, so the target will appear wobble phenomenon when the camera observes the target in a large distance from the reference coordinate. Due to the fact that the position and attitude of a spatial object change all the time under the unified time datum, the target will appear wobble phenomenon when the camera following a target observes a certain area near the target. A setting method of reference coordinate system based on the observation of the inertial coordinate system …
Smt Bounded Constrained Non Centralized Automaton Web Service Model Checking,
2020
1. College of Humanities , Qinzhou University, Qinzhou 535000, China;;
Smt Bounded Constrained Non Centralized Automaton Web Service Model Checking, Wei Rong, Xibing Shen, Yang Yi
Journal of System Simulation
Abstract: In model checking for web services applications, the combination of traditional finite state machine cannot guarantee the correctness of web service composition, a method of non centralized automaton model for web service detection algorithm was put forward,based on which could meet of mode theory (satisfiability modulo of the nanocomposite, SMT). The SMT was used to detect the bounded model of timed automata, and the time automaton was directly converted into SMT identifiable logic formula and was solved; using the SMT timed automata theory, implementation of employee travel arrangements for composite web service was modeled and verified. Through …
Research On Anchor Handling Simulation System,
2020
Laboratory of Marine Simulation & Control, Dalian Maritime University, Dalian 116026, China;
Research On Anchor Handling Simulation System, Zhongxian Zhu, Yin Yong, Helong Shen
Journal of System Simulation
Abstract: Anchor handling simulator (AHS) can provide a good visualization platform for the researchers and the anchor handling trainees, and has important significance on improving the working environment and efficiency. To build the anchor handling simulation platform, the mooring system's dynamics model was established based on Lumped Mass Method(LMM), and the offshore platform and anchor handling vessel's mathematical models were introduced based on the existing technologies in marine simulator. By utilizing the OpenSceneGraph(OSG) scene management engine and applying a series of visualization technologies, realized the simulation of the anchor handling operations, a real-time …
Zenithal Pedestrian Detection Using Multiple Feature Fusion In Monocular Vision,
2020
1. Engineering Research Center of Optical Instrument and System of Ministry of Education, School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;;2. Shanghai Key Laboratory of Modern Optical System,School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
Zenithal Pedestrian Detection Using Multiple Feature Fusion In Monocular Vision, Chunhui Tang
Journal of System Simulation
Abstract: There were extensive literatures on pedestrian detection, mostly supposed that visible humans were observed in flat view. Sometimes pedestrian detection from another perspective should be considered. The pedestrian detection with a vertical view camera was taken into account, which was usually used to count the pedestrian number. A method is put forward for zenithal pedestrian detecting based on rectangular partition features, in which the pedestrian head detection takes place of the body detection. It is by the exhaustive scanning to find targets in an image and so all the candidates are put into a series of rectangular feature …
Virtual Reality In Transportation: A Survey,
2020
1. China Academy of Transportation Sciences, Beijing 100029, China;;
Virtual Reality In Transportation: A Survey, Zhaohui Wu, Guo Yu, Wang Hui, Xiuna Miao
Journal of System Simulation
Abstract: The state-of-the-art of virtual reality application in the field of transportation was focused on. The novel virtual reality applications were summarized from the following six aspects: traffic simulation, accident simulation, virtual driving system, transportation achievements exhibition, behavior and psychology of traffic, virtual design and maintenance, and so on. The existing problems were discussed in the virtual reality application of transportation. The trends of virtual reality were proposed to try to solve the real traffic problems based on the transportation status of China.
Aesthetic Assessment For Digital Portrait Photos,
2020
School of Information Science and Engineering, Yunnan University, Kunming 650504, China;
Aesthetic Assessment For Digital Portrait Photos, Zeen Tao, Yuanyuan Pu, Xu Dan, Yiwei Liu
Journal of System Simulation
Abstract: Computational aesthetic evaluation is a challenging research. With the widespread use of digital products, it needs to improve the intelligence of digital products. How are these photos judged good or bad? The traditional photo aesthetic quality evaluation mainly is done based on subjective judgment or experts or the photographer's understanding for beauty. It is not only slow, but also with highly subjective. The results of face detect and eye detect were used to calculate visual balance of digital portrait based on face proportion and other features for aesthetic assessment of digital portrait photo were extracted too. The computer aesthetic …
Regional Credible Fusion Based Color-Texture Image Segmentation Approach,
2020
1. School of Information Engineering, Huang He Science and Technology College, Zhengzhou 450063, China;;2. School of Information Engineering, Zheng Zhou University, Zhengzhou 450060, China;
Regional Credible Fusion Based Color-Texture Image Segmentation Approach, Yang Yong, Guo Ling, Wenzheng Dai, Yangdong Ye
Journal of System Simulation
Abstract: An approach is proposed based on the combined color information and texture information for color-texture image segmentation. The compacted multi-scale texture information is extracted by using singular value decomposition and principal component analysis dimension reduction under decomposing the multi-scale structure tensor, and then it is integrated with scale information and color information for improving the description ability to color-texture. To avoid the phenomenon such as over-segmentation and error segmentation appeared, the regional credible fusion degree is computed by combining four kinds of region information, such as region adjacency relationship, region size, common edge between regions, and J-divergence distance. Meanwhile, …
Multi-Agent Path Planning Maco Algorithm In Web3d Mountain Scene,
2020
Tongji University, Shanghai 201804, China;
Multi-Agent Path Planning Maco Algorithm In Web3d Mountain Scene, Fengting Yan, Jinyuan Jia
Journal of System Simulation
Abstract: There is amount of data in a mountain scene, and the path planning algorithm in it is very complex, so it is not impossible to be shown detailed in Web. Usually the common potential path planning using contours can not find an optimal path because the path is easily cut under the cliff. To solve the above problems, a mACO (mountain ACO) path planning algorithm was addressed for the Web3D application, a planar grid ACO path planning algorithm and a A* path planning were completed in Web3D environment. Then a typical battle scene case was used for the …
Virtual Viewpoint Synthesis Based On Grid Mapping,
2020
1. Key Laboratory of Computer Network and Information Integration (Southeast University) Ministry of Education, Nanjing 211189, China;;2. State Key Laboratory for Novel Software Technology (Nanjing University), nanjing 210032, China;;3. School of Computer Science and Engineering, Southeast University, Nanjing 211189, China;
Virtual Viewpoint Synthesis Based On Grid Mapping, Yao Li, Qiongying Wu, Xu Hui
Journal of System Simulation
Abstract: Due to imperfect depth maps, occlusion and the illumination difference between reference images, annoying artifacts, such as holes and ghost edges, appearing in the rendering image by DIBR, holes filling being time-consuming, triangle mesh based on the depth contour and maps mesh triangles with energy constrains were created. Image fusion algorithm merged different viewpoint images and got final virtual viewpoint image. While DIBR warped the image with pixels, triangles were mapped with. Compared with the traditional DIBR, the proposed algorithm has a faster processing speed than the traditional pixel based processing method in the same image quality.
Algorithm For Rgbd Point Cloud Denoising And Simplification Based On K-Means Clustering,
2020
1. School of Computer and Information, Anqing Normal University, Anqing 246133, China;;2. The University Key Laboratory of Intelligent Perception and Computing of Anhui Province, Anqing 246133, China;;
Algorithm For Rgbd Point Cloud Denoising And Simplification Based On K-Means Clustering, Benyue Su, Jinyu Ma, Yusheng Peng, Sheng Min
Journal of System Simulation
Abstract: Aiming at the problem that the point cloud data scanned by Kinect or other depth camera have a huge number and more noise, a feature preserving method for point cloud denoising and simplification was proposed. This algorithm classified the point cloud rapidly by K-D tree; find The corresponding surface curvature values were obtained using curvature estimation algorithm; The K-means clustering algorithm for point cloud clustering was used. For each point in the cluster, the Euclidean distance was depended on between the point and center of the cluster and the change of the near points curvature to determine whether …
3d Skull Surface Completion Method Based On Multi-Exemplars,
2020
1. School of Information and Technology, Northwest University, Xi'an, 710069, China;;2. College of Computer Science and Technology, Xinjiang Normal University, Urumchi 830054, China;;
3d Skull Surface Completion Method Based On Multi-Exemplars, Reziwanguli Xiamixiding, Guohua Geng, Gulisong Nasierding, Qingqiong Deng, Dilinuer Keyimu, Zulipiya Maimaitiming, Wanrong Zhao, Zheng Lei
Journal of System Simulation
Abstract: In order to repair the damaged skulls, a skull completion method based on multiple exemplars was proposed. A 3D skull model database was constructed, and all the exemplars within the database were registered with a standard skull model. Each exemplar was then divided into a missing part and a remaining part according to the given damaged skull. After that, the relationship between the missing part and the remaining part was obtained by a regression algorithm. This relationship was used to calculate the missing part of the given skull, and a complete skull could be obtained by merging the two …
Mono-Slam Based Method For Stitching Images Of Sequence From Uav,
2020
1. Information Engineering University, Zhengzhou 450002, China;;
Mono-Slam Based Method For Stitching Images Of Sequence From Uav, Yuelong Ma, Zhao Yong, Xuefeng Cao
Journal of System Simulation
Abstract: It is an effective method to generate orthoimage from image sequence obtained from UAV. Most of the SfM-based methods for generating orthoimage are expensive computation and need hours or more to process image sequence, but the orthoimages generated finally are not satisfactory most of the time. An algorithm to stitch image sequence obtained from UAV incrementally was designed based on monocular SLAM generating orthoimage for large-scale instantaneously. Through the flow of SLAM, the system could estimate the position and attitude of the camera and the trajectory of UAV, meanwhile, generate a map of 3D point cloud. With the …
Study On Irregular Projection Surface Depth Perception Geometric Correction,
2020
School of Computer Science and Technology, Changchun University of Science and Technology, Changchun 130022, China;
Study On Irregular Projection Surface Depth Perception Geometric Correction, Baoxing Bai, Yang Fan, Han Cheng, Zhang Chao
Journal of System Simulation
Abstract: In order to improve the universality of the projector projection scene, a method of depth perception geometric correction on the irregular projection surface was proposed. With the theoretical analysis of the coupling, the weaken coupling solution was proposed. The depth of the irregular projection surface could be acquired by the encoded color structured light. After that, the feedback was used to solve the maximum visual projection area, the dynamic slicing algorithm for the irregular surfaces depth information was used to pull away the stratification planes, so a corresponding homography matrix for each stratification plane was calculated and the homography …
