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17th International Conference on Artificial Reality and Telexistence (ICAT 2007)最新文献

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Description and Performance Analysis of a Distributed Rendering Architecture for Virtual Environments 一种面向虚拟环境的分布式渲染体系结构描述与性能分析
17th International Conference on Artificial Reality and Telexistence (ICAT 2007) Pub Date : 2007-11-28 DOI: 10.1109/ICAT.2007.58
G. Marino, D. Vercelli, F. Tecchia, P. Gasparello, M. Bergamasco
{"title":"Description and Performance Analysis of a Distributed Rendering Architecture for Virtual Environments","authors":"G. Marino, D. Vercelli, F. Tecchia, P. Gasparello, M. Bergamasco","doi":"10.1109/ICAT.2007.58","DOIUrl":"https://doi.org/10.1109/ICAT.2007.58","url":null,"abstract":"Complex Virtual Environments applications may require computational resources exceeding the capabilities of a single machine. Our system, called \"XVR Network Renderer\" , allows rendering load to be distributed throughout a cluster of machines operating concurrently. The proposed solution consists in a set of software modules structured as a single-master multiple-slaves architecture. XVR is a development environment that allows rapid development of Virtual Environments applications. The master software intercepts all the OpenGL API calls performed by any XVR application, without requiring any code to be added or modified. The graphical commands are then re-executed individually by the slave clients. Each slave is typically configured to manage only a subset of the whole virtual context. Our system exploits the tight integration with the underlying XVR scene-graph manager at its own advantage, providing additional features other than the mere visualization of a high resolution OpenGL context, such as head tracking, GLSL shaders, and the ability to insert (and intercept) \"placemarkers\" inside the broadcast OpenGL data stream. Finally, the system can be configured to work with a wide range of complex visualization setups, automatically handling stereoscopy, correct perspective correction, overlapping images and other common problems, without ever changing the code of the original application. In this work we describe the proposed architecture and we discuss the results of our performance analysis.","PeriodicalId":110856,"journal":{"name":"17th International Conference on Artificial Reality and Telexistence (ICAT 2007)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133408300","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}
引用次数: 24
Virtual Reality-Based Casting Skill Transfer and Human Resource Development 基于虚拟现实的铸造技能转移与人力资源开发
17th International Conference on Artificial Reality and Telexistence (ICAT 2007) Pub Date : 2007-11-28 DOI: 10.1109/ICAT.2007.60
K. Watanuki
{"title":"Virtual Reality-Based Casting Skill Transfer and Human Resource Development","authors":"K. Watanuki","doi":"10.1109/ICAT.2007.60","DOIUrl":"https://doi.org/10.1109/ICAT.2007.60","url":null,"abstract":"This paper proposes a new virtual reality-based skill transfer and human resource development system for casting design, which is composed of the explicit and tacit knowledge transfer systems using synchronized multimedia and the knowledge internalization system using portable virtual environment. In our proposed system, the education content is displayed in the immersive virtual environment, whereby a trainee may experience work in the virtual site operation. Provided that the trainee has gained explicit and tacit knowledge of casting through the multimedia-based knowledge transfer system, the immersive virtual environment catalyzes the internalization of knowledge and also enables the trainee to gain tacit knowledge before undergoing on- the-job training at a real-time operation site.","PeriodicalId":110856,"journal":{"name":"17th International Conference on Artificial Reality and Telexistence (ICAT 2007)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129687586","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}
引用次数: 0
AR Display of Visual Aids for Supporting Pool Games by Online Markerless Tracking 通过在线无标记跟踪支持台球游戏的视觉辅助设备的AR显示
17th International Conference on Artificial Reality and Telexistence (ICAT 2007) Pub Date : 2007-11-28 DOI: 10.1109/ICAT.2007.35
Hideaki Uchiyama, H. Saito
{"title":"AR Display of Visual Aids for Supporting Pool Games by Online Markerless Tracking","authors":"Hideaki Uchiyama, H. Saito","doi":"10.1109/ICAT.2007.35","DOIUrl":"https://doi.org/10.1109/ICAT.2007.35","url":null,"abstract":"This paper presents a supporting system for pool games by computer vision based augmented reality technology. Main purpose of this system is to present visual aids drawn on a pool table through LCD display of a camera mounted handheld device without any artificial marker. Since a pool table is rectangle, a pool ball is sphere and each has a specific color, these serve as a substitute for artificial markers. Using these natural features, the registration of visual aids such as shooting direction and ball behavior is achieved. Also, our supporting information is computed based on the rules of pool games and includes the next shooting way by simulating ball behavior. Experimental results represent that the accuracy of ball positions is enough for computing our supporting information.","PeriodicalId":110856,"journal":{"name":"17th International Conference on Artificial Reality and Telexistence (ICAT 2007)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127930652","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}
引用次数: 12
Compensated Visual Hull for Defective Segmentation and Occlusion 补偿视觉船体缺陷分割和遮挡
17th International Conference on Artificial Reality and Telexistence (ICAT 2007) Pub Date : 2007-11-28 DOI: 10.1109/ICAT.2007.29
Hansung Kim, R. Sakamoto, I. Kitahara, N. Orman, T. Toriyama, K. Kogure
{"title":"Compensated Visual Hull for Defective Segmentation and Occlusion","authors":"Hansung Kim, R. Sakamoto, I. Kitahara, N. Orman, T. Toriyama, K. Kogure","doi":"10.1109/ICAT.2007.29","DOIUrl":"https://doi.org/10.1109/ICAT.2007.29","url":null,"abstract":"We propose an advanced visual hull technique to compensate for outliers using the reliabilities of the silhouettes. The proposed method consists of a foreground extraction technique based on the generalized Gaussian family model and a compensated shape-from-silhouette algorithm. They are connected by the intra-/inter-silhouette reliabilities to compensate for carving errors from defective segmentation or partial occlusion which may occur in a real environment. The 3D reconstruction process is implemented on a graphics processing unit (GPU) to accelerate the processing speed by using the huge computational power of modern graphics hardware. Experimental results show that the proposed method provides reliable silhouette information and an accurate visual hull in real environments at a very high speed on a common PC.","PeriodicalId":110856,"journal":{"name":"17th International Conference on Artificial Reality and Telexistence (ICAT 2007)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116726817","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}
引用次数: 14
A Display-Based Tracking System: Display-Based Computing for Measurement Systems 基于显示的跟踪系统:测量系统的显示计算
17th International Conference on Artificial Reality and Telexistence (ICAT 2007) Pub Date : 2007-11-28 DOI: 10.1109/ICAT.2007.50
M. Sugimoto, Kazuki Kodama, A. Nakamura, Minoru Kojima, M. Inami
{"title":"A Display-Based Tracking System: Display-Based Computing for Measurement Systems","authors":"M. Sugimoto, Kazuki Kodama, A. Nakamura, Minoru Kojima, M. Inami","doi":"10.1109/ICAT.2007.50","DOIUrl":"https://doi.org/10.1109/ICAT.2007.50","url":null,"abstract":"In this paper, we introduce a two dimensional display-based tracking system. The system consists of a regular display device and simple photo sensors. It measures the position and direction of a receiver using fiducial graphics. The result of the measurement can be acquired in the same coordinate system as the graphics. Thus, this system no longer needs the measurement devices to be calibrated to the display devices. This is beneficial for mixed reality applications that synthesize virtual and real environments.","PeriodicalId":110856,"journal":{"name":"17th International Conference on Artificial Reality and Telexistence (ICAT 2007)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128877412","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}
引用次数: 23
Improvement of Accuracy for 2D Marker-Based Tracking Using Particle Filter 利用粒子滤波提高二维标记跟踪精度
17th International Conference on Artificial Reality and Telexistence (ICAT 2007) Pub Date : 2007-11-28 DOI: 10.1109/ICAT.2007.16
Yuko Uematsu, H. Saito
{"title":"Improvement of Accuracy for 2D Marker-Based Tracking Using Particle Filter","authors":"Yuko Uematsu, H. Saito","doi":"10.1109/ICAT.2007.16","DOIUrl":"https://doi.org/10.1109/ICAT.2007.16","url":null,"abstract":"This paper presents a method for improving accuracy of marker-based tracking using a 2D marker for augmented reality. We focus on that tracking becomes unstable when the view direction of the camera is almost perpendicular to a marker plane. Especially, tracking of Z axis which is perpendicular to the marker plane (X-Y) becomes unstable. For improving tracking accuracy in this case, we search rotation parameters that are the fittest to projected pattern based on the particle filter. By using particle filtering technique, then, our method can correctly estimate rotation parameters of the camera which are important to track the 3D coordinate system and improve the accuracy of the 3D coordinate system. This method can reduce jitters between frames, which is a big problem in AR. In the experiment, we demonstrate that our method can improve the tracking accuracy of the 3D coordinate system compared with just using ARToolkit.","PeriodicalId":110856,"journal":{"name":"17th International Conference on Artificial Reality and Telexistence (ICAT 2007)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133516471","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}
引用次数: 32
The Peripheral Display for Augmented Reality of Self-motion 自运动增强现实的周边显示
17th International Conference on Artificial Reality and Telexistence (ICAT 2007) Pub Date : 2007-11-28 DOI: 10.1109/ICAT.2007.44
T. Nojima, Yoshihiko Saiga, Yu Okano, Y. Hashimoto, H. Kajimoto
{"title":"The Peripheral Display for Augmented Reality of Self-motion","authors":"T. Nojima, Yoshihiko Saiga, Yu Okano, Y. Hashimoto, H. Kajimoto","doi":"10.1109/ICAT.2007.44","DOIUrl":"https://doi.org/10.1109/ICAT.2007.44","url":null,"abstract":"It is known that peripheral vision strongly contributes to the sense of self-motion, and that users of visual displays with a narrow field of view often find it hard to experience such sensations fully. In this research, we propose a peripheral display that augments the feeling of self-motion. This consists of simple displays that stimulate the user's peripheral area of vision. By changing the stimulus on the peripheral display, the system should be able to increase or reduce the user's sense of self-motion. In this report, we describe a prototype of the display system and the result of its evaluation.","PeriodicalId":110856,"journal":{"name":"17th International Conference on Artificial Reality and Telexistence (ICAT 2007)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121409575","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}
引用次数: 6
Multi-Player Virtual Ping-Pong Game 多人虚拟乒乓球游戏
17th International Conference on Artificial Reality and Telexistence (ICAT 2007) Pub Date : 2007-11-28 DOI: 10.1109/ICAT.2007.34
Young-Bum Kim, Seung-Hoon Han, Sun-jeong Kim, Eun-Ju Kim, C. Song
{"title":"Multi-Player Virtual Ping-Pong Game","authors":"Young-Bum Kim, Seung-Hoon Han, Sun-jeong Kim, Eun-Ju Kim, C. Song","doi":"10.1109/ICAT.2007.34","DOIUrl":"https://doi.org/10.1109/ICAT.2007.34","url":null,"abstract":"In this paper we show how a motion capture system and feedback mechanism can be integrated into a virtual ping- pong game to create a multi-player platform. To trace the motion of each player, optical markers are attached to different places on each player's paddle. For tactile feedback, we designed a controller for a DC (Direct Current) motor, which is also attached to the paddle. This controller communicates with the game server through wireless Bluetooth technology. When the game server detects a collision between the paddle and ball, the controller receives the message from the game server and then triggers one of the respective paddle's DC motors to vibrate depending on the position of the impact on the paddle. During an exhibition many people positively responded to the game.","PeriodicalId":110856,"journal":{"name":"17th International Conference on Artificial Reality and Telexistence (ICAT 2007)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116456963","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}
引用次数: 13
Volumetric Display for Augmented Reality 增强现实的体积显示
17th International Conference on Artificial Reality and Telexistence (ICAT 2007) Pub Date : 2007-11-28 DOI: 10.1109/ICAT.2007.17
Ronald Sidharta, Atsushi Hiyama, T. Tanikawa, M. Hirose
{"title":"Volumetric Display for Augmented Reality","authors":"Ronald Sidharta, Atsushi Hiyama, T. Tanikawa, M. Hirose","doi":"10.1109/ICAT.2007.17","DOIUrl":"https://doi.org/10.1109/ICAT.2007.17","url":null,"abstract":"In our previous paper, we proposed an augmented reality display based on the pepper's ghost configuration that was able to display two-dimensional images on different image plane at different physical depths. In this paper, we propose the next generation of the display. Our latest display is able to display images at different physical depths simultaneously, thus it is able to display virtual objects with real depth, binocular parallax and motion parallax without the use of special glasses. Using the pepper's ghost setup, we are able to display real world objects and virtual objects in the same space. Furthermore, since the rendered virtual objects have real physical depth, our system does not suffer from accommodation and convergence mismatch problem. We will describe the hardware setup, software system, and follow with two user evaluation experiments that evaluated the result of our system.","PeriodicalId":110856,"journal":{"name":"17th International Conference on Artificial Reality and Telexistence (ICAT 2007)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127456416","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}
引用次数: 7
A Novel Camera Calibration Technique Based on a Rotating Planar Complex Object with a Fixed Point 一种基于旋转平面不动点复杂物体的摄像机标定新技术
17th International Conference on Artificial Reality and Telexistence (ICAT 2007) Pub Date : 2007-11-28 DOI: 10.1109/ICAT.2007.31
Mustafizur Rahman, Gang Xu
{"title":"A Novel Camera Calibration Technique Based on a Rotating Planar Complex Object with a Fixed Point","authors":"Mustafizur Rahman, Gang Xu","doi":"10.1109/ICAT.2007.31","DOIUrl":"https://doi.org/10.1109/ICAT.2007.31","url":null,"abstract":"In this paper, we propose the new technique that recovers camera parameters from images of orthogonal directions of a moving object, no metric information on the model plane requires. Our approach only requires four observations and each of them provides a vanishing point from its two parallel lines; such four vanishing points provide three independent constraints. Using these points and proposed close form solution, camera intrinsic parameters can be calculated. Our technique is valid though the calibrating object moves along X-Y axes. At the end, computer simulation technique are implemented to demonstrate the effectiveness of the algorithm.","PeriodicalId":110856,"journal":{"name":"17th International Conference on Artificial Reality and Telexistence (ICAT 2007)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127075317","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}
引用次数: 1
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