In the 3D reconstruction, the visual hull texture mapping is a critical step. The camera-selection-table is proposed for texture mapping quickly. By designing the camera-selection-table, and combined with view-dependent theories, we can choose the right camera for texture mapping, and finally accomplish the reconstruction of the model. By using GPU parallel processing, we can greatly accelerate the process of rebuilding the model, getting better real-time performance. Experimental results show that the algorithm can quickly and accurately realize the texture mapping process and accomplish the reconstruction of the model.
{"title":"A Parallel Processing of View-Dependent Visual Hull Texture Mapping","authors":"Guangkui Ren, Guojun Chen","doi":"10.1109/ICVRV.2011.15","DOIUrl":"https://doi.org/10.1109/ICVRV.2011.15","url":null,"abstract":"In the 3D reconstruction, the visual hull texture mapping is a critical step. The camera-selection-table is proposed for texture mapping quickly. By designing the camera-selection-table, and combined with view-dependent theories, we can choose the right camera for texture mapping, and finally accomplish the reconstruction of the model. By using GPU parallel processing, we can greatly accelerate the process of rebuilding the model, getting better real-time performance. Experimental results show that the algorithm can quickly and accurately realize the texture mapping process and accomplish the reconstruction of the model.","PeriodicalId":239933,"journal":{"name":"2011 International Conference on Virtual Reality and Visualization","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122847673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The purpose of the paper is to develop a novel simulation system for ship propulsion plant. The nonlinear mathematical model of main propulsion system of a large container ship is established, consisting of the large low speed two-stroke diesel engine, shaft, fixed pitch propeller and ship hull dynamics. What's more, a new full mission ship diesel main propulsion plant remote simulation system, including the bridge, ECR and local control function, is developed by utilizing practical devices of CAN bus and touch screen, as well as the view classes switching and database management techniques. The navigation condition of the main propulsion of the ship can be properly simulated and satisfactory visualization is gained by the system. Therefore, it can be adopted not only as a favorable platform of intelligent control algorithm for marine main diesel propulsion plant, but also as one critical part of the crew training facilities under laboratory condition.
{"title":"A Novel Simulation System for Marine Main Diesel Propulsion Remote Control","authors":"Yang Yang, Chen Guo, Jianbo Sun, De-wen Yan","doi":"10.1109/ICVRV.2011.9","DOIUrl":"https://doi.org/10.1109/ICVRV.2011.9","url":null,"abstract":"The purpose of the paper is to develop a novel simulation system for ship propulsion plant. The nonlinear mathematical model of main propulsion system of a large container ship is established, consisting of the large low speed two-stroke diesel engine, shaft, fixed pitch propeller and ship hull dynamics. What's more, a new full mission ship diesel main propulsion plant remote simulation system, including the bridge, ECR and local control function, is developed by utilizing practical devices of CAN bus and touch screen, as well as the view classes switching and database management techniques. The navigation condition of the main propulsion of the ship can be properly simulated and satisfactory visualization is gained by the system. Therefore, it can be adopted not only as a favorable platform of intelligent control algorithm for marine main diesel propulsion plant, but also as one critical part of the crew training facilities under laboratory condition.","PeriodicalId":239933,"journal":{"name":"2011 International Conference on Virtual Reality and Visualization","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130192977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aiming at the problem of low efficiency and unsatisfactory matching of uniform texture regions in binocular stereo vision, we propose a rapid window-based adaptive correspondence search algorithm using mean shift and disparity estimation. Color aggregation is firstly carried out to the reference image and the target image through mean shift method in order to obtain images with low dynamic color range. Then we make disparity estimation to the pre-processed two images and compute disparities of uniform texture regions. Finally, adaptive window matching is completed and exact depth map is achieved through similarity computation and window-based support aggregation. Experimental results show that our algorithm is more efficient and keeps smooth disparity better than the prior window method.
{"title":"A Window-Based Adaptive Correspondence Search Algorithm Using Mean Shift and Disparity Estimation","authors":"Shujun Zhang, Jianbo Zhang, Yun Liu","doi":"10.1109/ICVRV.2011.47","DOIUrl":"https://doi.org/10.1109/ICVRV.2011.47","url":null,"abstract":"Aiming at the problem of low efficiency and unsatisfactory matching of uniform texture regions in binocular stereo vision, we propose a rapid window-based adaptive correspondence search algorithm using mean shift and disparity estimation. Color aggregation is firstly carried out to the reference image and the target image through mean shift method in order to obtain images with low dynamic color range. Then we make disparity estimation to the pre-processed two images and compute disparities of uniform texture regions. Finally, adaptive window matching is completed and exact depth map is achieved through similarity computation and window-based support aggregation. Experimental results show that our algorithm is more efficient and keeps smooth disparity better than the prior window method.","PeriodicalId":239933,"journal":{"name":"2011 International Conference on Virtual Reality and Visualization","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134102934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper proposes a tele-rehabilitation system based on virtual reality (VR) and haptic interaction technologies. The proposed system allows the therapist to remotely monitor the patient's rehabilitation exercise and provide force to correct the patient's movement if it is unexpected. The force is generated according to the force model defined at the server side. It is important for the therapist to know the magnitude of force applied on the patient as excessive force may harm the patient. Experiment results demonstrate that the proposed system is feasible and that the therapist can correct patient's movement effectively through providing force.
{"title":"Feasibility of a Tele-rehabilitation System with Corrective-Force","authors":"Xibo Wang, Jiting Li","doi":"10.1109/ICVRV.2011.14","DOIUrl":"https://doi.org/10.1109/ICVRV.2011.14","url":null,"abstract":"This paper proposes a tele-rehabilitation system based on virtual reality (VR) and haptic interaction technologies. The proposed system allows the therapist to remotely monitor the patient's rehabilitation exercise and provide force to correct the patient's movement if it is unexpected. The force is generated according to the force model defined at the server side. It is important for the therapist to know the magnitude of force applied on the patient as excessive force may harm the patient. Experiment results demonstrate that the proposed system is feasible and that the therapist can correct patient's movement effectively through providing force.","PeriodicalId":239933,"journal":{"name":"2011 International Conference on Virtual Reality and Visualization","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131908409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Building Virtual Entertainment Environment with Tiled Display Wall and Motion Tracking","authors":"Liangjie Zhang, Xiaohong Jiang, Kaibin Lei, Hua Xiong","doi":"10.1007/978-3-642-37042-7_17","DOIUrl":"https://doi.org/10.1007/978-3-642-37042-7_17","url":null,"abstract":"","PeriodicalId":239933,"journal":{"name":"2011 International Conference on Virtual Reality and Visualization","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115443958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jian-cheng Shi, Jianhua Liu, R. Ning, Weiwei Hou, Wan-ying Xia
Physically-based modeling is used in virtual assembly system to improve the feeling of immersion and make the evaluation results convinced. The handling of unilateral constraints is the capstone of modeling physical behaviors. To take advantage of both impulse-based method and analytical method, hybrid scheme for adaptive simulation is presented, where the constraint states can be transited automatically. Collision is solved using impulse-based method while contact with friction is handled by formulating to linear complementarity problem. To make these methods efferent, physical models are reorganized according to the assembly hierarchy. The scheme and methods were implemented in the prototype system Virtual Assembly Process Planning (VAPP). It proved the algorithms can meet the requirement of rigid body simulation in virtual assembly system.
{"title":"Dynamics Simulation with Unilateral Constraints in Virtual Assembly","authors":"Jian-cheng Shi, Jianhua Liu, R. Ning, Weiwei Hou, Wan-ying Xia","doi":"10.1109/ICVRV.2011.51","DOIUrl":"https://doi.org/10.1109/ICVRV.2011.51","url":null,"abstract":"Physically-based modeling is used in virtual assembly system to improve the feeling of immersion and make the evaluation results convinced. The handling of unilateral constraints is the capstone of modeling physical behaviors. To take advantage of both impulse-based method and analytical method, hybrid scheme for adaptive simulation is presented, where the constraint states can be transited automatically. Collision is solved using impulse-based method while contact with friction is handled by formulating to linear complementarity problem. To make these methods efferent, physical models are reorganized according to the assembly hierarchy. The scheme and methods were implemented in the prototype system Virtual Assembly Process Planning (VAPP). It proved the algorithms can meet the requirement of rigid body simulation in virtual assembly system.","PeriodicalId":239933,"journal":{"name":"2011 International Conference on Virtual Reality and Visualization","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124023457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Li Xiao, Xiaolin Cao, Yi Cao, Zhiwei Ai, Pingjun Xu
The scale of some datasets generated by simulations on tens of thousands of cores are gigabyte or larger per output step. It is imperative that efficient coupling of these simulations and parallel visualization. Therefore, a patch-based parallel I/O strategy has been designed and implemented in JASMIN. These programs reconstructed or developed on JASMIN can write plotting data in many files. These datasets in files can be read directly by Visit software with low I/O overheads. Finally, four large-scale datasets generated have been visualized efficiently on 72 cores by using Visit software. These make it possible to analyze and understand these datasets in a timely fashion.
{"title":"Efficient Coupling of Parallel Visualization and Simulations on Tens of Thousands of Cores","authors":"Li Xiao, Xiaolin Cao, Yi Cao, Zhiwei Ai, Pingjun Xu","doi":"10.1109/ICVRV.2011.59","DOIUrl":"https://doi.org/10.1109/ICVRV.2011.59","url":null,"abstract":"The scale of some datasets generated by simulations on tens of thousands of cores are gigabyte or larger per output step. It is imperative that efficient coupling of these simulations and parallel visualization. Therefore, a patch-based parallel I/O strategy has been designed and implemented in JASMIN. These programs reconstructed or developed on JASMIN can write plotting data in many files. These datasets in files can be read directly by Visit software with low I/O overheads. Finally, four large-scale datasets generated have been visualized efficiently on 72 cores by using Visit software. These make it possible to analyze and understand these datasets in a timely fashion.","PeriodicalId":239933,"journal":{"name":"2011 International Conference on Virtual Reality and Visualization","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130672080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhiquan Feng, Yanwei Zheng, Bo Yang, Wei Gai, Yi Li, Yan Lin, Haokui Tang, XianHui Song
A novel framework for 3D freehand tracking is put forward in this paper. Firstly, we model and investigate this problem under our virtual assembly system (VAS), so as to decrease the arbitrariness and complexity of this issue. Secondly, we put emphasis on building cognitive and behavioral model (BM) for users in VAS. Thirdly, we research on the way to track 3D freehand based on BM. Our experimental results show that the proposed approach raises the quality of each sampled particle or avoid sampling "poor" particles which appear with low probability in each frame, and it tracks 3D freehand in real-time with high accuracy. The number of the drawn particles is reduced up to 5 and the tracking speed increase up to 81 ms per frame.
{"title":"Freehand Tracking Based on Behavioral Model Analysis","authors":"Zhiquan Feng, Yanwei Zheng, Bo Yang, Wei Gai, Yi Li, Yan Lin, Haokui Tang, XianHui Song","doi":"10.1109/ICVRV.2011.44","DOIUrl":"https://doi.org/10.1109/ICVRV.2011.44","url":null,"abstract":"A novel framework for 3D freehand tracking is put forward in this paper. Firstly, we model and investigate this problem under our virtual assembly system (VAS), so as to decrease the arbitrariness and complexity of this issue. Secondly, we put emphasis on building cognitive and behavioral model (BM) for users in VAS. Thirdly, we research on the way to track 3D freehand based on BM. Our experimental results show that the proposed approach raises the quality of each sampled particle or avoid sampling \"poor\" particles which appear with low probability in each frame, and it tracks 3D freehand in real-time with high accuracy. The number of the drawn particles is reduced up to 5 and the tracking speed increase up to 81 ms per frame.","PeriodicalId":239933,"journal":{"name":"2011 International Conference on Virtual Reality and Visualization","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122761024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qi Yan-qing, Wang Song-shan, Hao Jian-ping, Li Xing-xin
In order to get reach zone and view scope with complete geometric information to facilitate research of collision detection, a point by point scanning algorithm was brought up to generate the spatial surface of human's reach and view area. The method to set scanning point's motion path in the beginning based on the major degrees of freedom of human's arm and the range of human's eye joints in horizontal and vertical direction. Then obtained each point's coordinates by a certain frequency. At last a curved surface was formed by these discrete points to represent human's reach zone and view scope. The surface's geometry information was stored to a file at the same time. In the algorithm the freedom of human's arm and eye was optimized especially. This can solve a variety of reach zone and view scope with arbitrary joint angles. The work facilitated the future study of collision detection and engineering analysis.
{"title":"Improved Reach Zone and View Scope Algorithm of Software Jack","authors":"Qi Yan-qing, Wang Song-shan, Hao Jian-ping, Li Xing-xin","doi":"10.1109/ICVRV.2011.33","DOIUrl":"https://doi.org/10.1109/ICVRV.2011.33","url":null,"abstract":"In order to get reach zone and view scope with complete geometric information to facilitate research of collision detection, a point by point scanning algorithm was brought up to generate the spatial surface of human's reach and view area. The method to set scanning point's motion path in the beginning based on the major degrees of freedom of human's arm and the range of human's eye joints in horizontal and vertical direction. Then obtained each point's coordinates by a certain frequency. At last a curved surface was formed by these discrete points to represent human's reach zone and view scope. The surface's geometry information was stored to a file at the same time. In the algorithm the freedom of human's arm and eye was optimized especially. This can solve a variety of reach zone and view scope with arbitrary joint angles. The work facilitated the future study of collision detection and engineering analysis.","PeriodicalId":239933,"journal":{"name":"2011 International Conference on Virtual Reality and Visualization","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131463183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Automotive interior ergonomics analysis is an important step for its development validation in the process, which directly affects the product development cycle time and cost. In order to provide a quick and human-in-loop visibility evaluation method for style designer when designing vehicle interior, a new method is proposed based on augmented reality. In this method, firstly virtual car interior model is superimposed to physical mockup accurately, then driving virtual visual cones through tracking eyes' position by tracking tool in real time to carry on visibility assessment. In addition, right hand's motion data is captured by data glove and tracking tool, which is used to drive virtual hand for interaction with virtual interior model, then carrying on accessibility assessment. Based on above-mentioned method the automotive interior ergonomics assessment system is designed and realized, which is verified by two cases of evaluating a certain car model's A-pillar and operating the hand controls locating on the middle dashboard in the different position. The result shows that this method is simple and useful. Therefore, it offers a new way for visibility and accessibility assessment in the conceptual design of automotive development.
{"title":"Using AR Technology for Automotive Visibility and Accessibility Assessment","authors":"Shiguang Qiu, Xu Jing, X. Fan, Qichang He","doi":"10.1109/ICVRV.2011.26","DOIUrl":"https://doi.org/10.1109/ICVRV.2011.26","url":null,"abstract":"Automotive interior ergonomics analysis is an important step for its development validation in the process, which directly affects the product development cycle time and cost. In order to provide a quick and human-in-loop visibility evaluation method for style designer when designing vehicle interior, a new method is proposed based on augmented reality. In this method, firstly virtual car interior model is superimposed to physical mockup accurately, then driving virtual visual cones through tracking eyes' position by tracking tool in real time to carry on visibility assessment. In addition, right hand's motion data is captured by data glove and tracking tool, which is used to drive virtual hand for interaction with virtual interior model, then carrying on accessibility assessment. Based on above-mentioned method the automotive interior ergonomics assessment system is designed and realized, which is verified by two cases of evaluating a certain car model's A-pillar and operating the hand controls locating on the middle dashboard in the different position. The result shows that this method is simple and useful. Therefore, it offers a new way for visibility and accessibility assessment in the conceptual design of automotive development.","PeriodicalId":239933,"journal":{"name":"2011 International Conference on Virtual Reality and Visualization","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115359181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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