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Proceedings of Theory and Practice of Computer Graphics, 2003.最新文献

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The 3D Wunderkammer: an indexing by placing approach to the image storage and retrieval 3D奇迹:一种通过放置索引来存储和检索图像的方法
Proceedings of Theory and Practice of Computer Graphics, 2003. Pub Date : 2003-06-03 DOI: 10.1109/TPCG.2003.1206928
K. Matkovič, Johannes Siglaer, Martin Kompast, Thomas Psik, I. Wagner
{"title":"The 3D Wunderkammer: an indexing by placing approach to the image storage and retrieval","authors":"K. Matkovič, Johannes Siglaer, Martin Kompast, Thomas Psik, I. Wagner","doi":"10.1109/TPCG.2003.1206928","DOIUrl":"https://doi.org/10.1109/TPCG.2003.1206928","url":null,"abstract":"The explosion of storage media size and spread of the Internet have resulted in a huge amount of images and multimedia material that an average user has to deal with. The traditional use of filenames and directories is no longer sufficient. In contrast to keywording and a kind of content-based image retrieval, we introduce a novel approach to storing and retrieving images, and other multimedia material using an indexing by placing mechanism. The idea is to let the user place images in the 3D environment, where the user can easily find them again. The images can be collected, modified, and grouped together. The principles described in the paper are implemented in the 3D Wunderkammer system, a multi-user client-server application. The server is completely written in Java and the client runs in a standard Web browser with a standard VRML plug-in.","PeriodicalId":132138,"journal":{"name":"Proceedings of Theory and Practice of Computer Graphics, 2003.","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125420385","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: 2
Previsualizing the interior: stylistic representations of virtual "space" for multiple end-users 预可视化内部:多个最终用户的虚拟“空间”的风格表现
Proceedings of Theory and Practice of Computer Graphics, 2003. Pub Date : 2003-06-03 DOI: 10.1109/TPCG.2003.1206947
Matthew Cooke
{"title":"Previsualizing the interior: stylistic representations of virtual \"space\" for multiple end-users","authors":"Matthew Cooke","doi":"10.1109/TPCG.2003.1206947","DOIUrl":"https://doi.org/10.1109/TPCG.2003.1206947","url":null,"abstract":"Designers working within the practice of interior architecture are periodically allowed opportunities to previsualize unbuilt space using 3D (three-dimensional) software packages. These packages arguably translate the proposed final space into a virtually \"built\" form. This paper addresses the use of digital technologies in the teaching of interior architecture, which accepts but challenges representations of what is possible in terms of interior design.","PeriodicalId":132138,"journal":{"name":"Proceedings of Theory and Practice of Computer Graphics, 2003.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130509583","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
Real-time path planning for navigation in unknown environment 未知环境下导航的实时路径规划
Proceedings of Theory and Practice of Computer Graphics, 2003. Pub Date : 2003-06-03 DOI: 10.1109/TPCG.2003.1206941
T. Wan, Heng Chen, R. Earnshaw
{"title":"Real-time path planning for navigation in unknown environment","authors":"T. Wan, Heng Chen, R. Earnshaw","doi":"10.1109/TPCG.2003.1206941","DOIUrl":"https://doi.org/10.1109/TPCG.2003.1206941","url":null,"abstract":"Real-time path planning is a challenging task that has many applications in the fields of AI, moving robots, virtual reality, agent behavior simulation, and action games. The various approaches for path planning have different criteria that have to be met, resulting in a number of algorithms for solutions to specific problems. In this paper, we introduce our approach and recent development regarding path planning in game environments. We propose a real-time motion-optimization algorithm called Adaptive Dynamic Points of Visibility (ADPV) for navigation of vehicles or moving agents in dynamical unconfigured environments, which computes a collision-free, time-optimal motion track for the moving objects. Our approach is able to deal with the obstacle-space that is unknown or partially unknown to the moving agent. It therefore solves the drawbacks of traditional obstacle-space configuration methods.","PeriodicalId":132138,"journal":{"name":"Proceedings of Theory and Practice of Computer Graphics, 2003.","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133347701","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: 21
Formulated silhouettes for sketching terrain 为绘制地形而制定的轮廓
Proceedings of Theory and Practice of Computer Graphics, 2003. Pub Date : 2003-06-03 DOI: 10.1109/TPCG.2003.1206935
J. Whelan, M. Visvalingam
{"title":"Formulated silhouettes for sketching terrain","authors":"J. Whelan, M. Visvalingam","doi":"10.1109/TPCG.2003.1206935","DOIUrl":"https://doi.org/10.1109/TPCG.2003.1206935","url":null,"abstract":"The mathematical definition of silhouettes within NPAR is based on the assumption that they are the eye-centered projections of occluding contours on an imaging plane. However, occluding contours are insufficient for sketching the silhouettes of hills as drawn by cartographers. The research reported in this paper is based on the proposition that silhouettes are mental visualizations of the outlines of objects that arise from knowledge and experience of the visual world. This paper does not seek to provide an alternative definition of silhouettes. Instead, it tests the proposition that missing silhouette elements should be drawn on those visible surfaces brought into view through adoption of a higher viewpoint.","PeriodicalId":132138,"journal":{"name":"Proceedings of Theory and Practice of Computer Graphics, 2003.","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132662022","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: 26
Shape-similarity search of 3D models by using enhanced shape functions 基于增强形状函数的三维模型形状相似搜索
Proceedings of Theory and Practice of Computer Graphics, 2003. Pub Date : 2003-06-03 DOI: 10.1109/TPCG.2003.1206936
Ryutarou Ohbuchi, Takahiro Minamitani, Tsuyoshi Takei
{"title":"Shape-similarity search of 3D models by using enhanced shape functions","authors":"Ryutarou Ohbuchi, Takahiro Minamitani, Tsuyoshi Takei","doi":"10.1109/TPCG.2003.1206936","DOIUrl":"https://doi.org/10.1109/TPCG.2003.1206936","url":null,"abstract":"We propose a pair of shape features for shape-similarity search of 3D (three-dimensional) polygonal-mesh models. The shape features are an extension of the D2 shape functions proposed by Osada et al. (2001). Our proposed shape features are tolerant of topological variations and geometrical degeneracies. Our shape feature is also invariant to similarity transformation. Experiments showed that, with only a modest increase in computational cost, our shape feature achieved a significant performance improvement over Osada's D2.","PeriodicalId":132138,"journal":{"name":"Proceedings of Theory and Practice of Computer Graphics, 2003.","volume":"294 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120838540","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: 256
Demosaicing of color images using pixel level data-dependent triangulation 使用像素级数据相关三角剖分的彩色图像去马赛克
Proceedings of Theory and Practice of Computer Graphics, 2003. Pub Date : 2003-06-03 DOI: 10.1109/TPCG.2003.1206926
Dan Su, P. Willis
{"title":"Demosaicing of color images using pixel level data-dependent triangulation","authors":"Dan Su, P. Willis","doi":"10.1109/TPCG.2003.1206926","DOIUrl":"https://doi.org/10.1109/TPCG.2003.1206926","url":null,"abstract":"Single-chip digital cameras use an array of broad-spectrum charge-coupled devices (CCD) overlayed with a color filter array. The filter layer consists of transparent patches of red, green and blue, such that each CCD pixel captures one of these primary colors. To reconstruct a color image at the full CCD resolution, the 'missing' primary values have to be interpolated from nearby samples. We present an effective color interpolation using a simple pixel level data-dependent triangulation. This interpolation technique is applied to the commonly-used Bayer colour filter array pattern. Results show that the proposed method gives superior reconstruction quality, with smaller visual defects than other methods. Furthermore, the complexity and efficiency of the proposed method is very close to simple bilinear interpolation, making it easy to implement and fast to run.","PeriodicalId":132138,"journal":{"name":"Proceedings of Theory and Practice of Computer Graphics, 2003.","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120943808","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: 33
Visualizing diffusion-weighted MRI data using collaborative virtual environment and grid technologies 利用协同虚拟环境和网格技术可视化弥散加权MRI数据
Proceedings of Theory and Practice of Computer Graphics, 2003. Pub Date : 2003-06-03 DOI: 10.1109/TPCG.2003.1206943
A. Steed, D. Alexander, P. Cook, Chris Parker
{"title":"Visualizing diffusion-weighted MRI data using collaborative virtual environment and grid technologies","authors":"A. Steed, D. Alexander, P. Cook, Chris Parker","doi":"10.1109/TPCG.2003.1206943","DOIUrl":"https://doi.org/10.1109/TPCG.2003.1206943","url":null,"abstract":"We describe a collaborative virtual environment system for visualization of diffusion magnetic resonance imaging scans. The system represents the 3D (three-dimensional) data by arrays of polyhedra, colored by the degree of anisotropy and directed by the principal component of the diffusion tensor. Users can then collaboratively explore the data and interactively spawn tractography processes that compute tracks that depict white matter fiber pathways through the brain. These tracks are computed on a Grid service currently supporting 72 nodes on a Beowulf cluster.","PeriodicalId":132138,"journal":{"name":"Proceedings of Theory and Practice of Computer Graphics, 2003.","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124609492","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: 5
Developing a global repository and showplace for imagery data 开发图像数据的全球存储库和展示场所
Proceedings of Theory and Practice of Computer Graphics, 2003. Pub Date : 2003-06-03 DOI: 10.1109/TPCG.2003.1206946
Ann Smith, Min Chen, M. F. Webster
{"title":"Developing a global repository and showplace for imagery data","authors":"Ann Smith, Min Chen, M. F. Webster","doi":"10.1109/TPCG.2003.1206946","DOIUrl":"https://doi.org/10.1109/TPCG.2003.1206946","url":null,"abstract":"This paper describes the development of a Web service that provides a 3D (three-dimensional) (VRML (Virtual Reality Modelling Language)) virtual environment for automated management and exhibition of imagery data. With this service, users can upload imagery data (such as images, videos and presentations) through a Web browser, and the data will be automatically placed into virtual galleries, cinemas and studios. The environment modifies itself dynamically to accommodate addition and deletion of imagery data. The service empowers ordinary users to utilize the Internet as a global data repository and showplace and provides an intuitive and stimulating way to visualize and explore large volumes of imagery data. It removes the burden of nontrivial management of large volumes of data, including ontological organization of users files and geometrical design of the virtual environment. The service also introduces several interesting and useful metaphors, such as virtual archives and space-warp tram that cohere with the imagery world.","PeriodicalId":132138,"journal":{"name":"Proceedings of Theory and Practice of Computer Graphics, 2003.","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124022782","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: 3
3D sound feedback act as task aid in a virtual assembly environment 3D声音反馈在虚拟装配环境中起到任务辅助的作用
Proceedings of Theory and Practice of Computer Graphics, 2003. Pub Date : 2003-06-03 DOI: 10.1109/TPCG.2003.1206950
Ying Zhang, T. Fernando
{"title":"3D sound feedback act as task aid in a virtual assembly environment","authors":"Ying Zhang, T. Fernando","doi":"10.1109/TPCG.2003.1206950","DOIUrl":"https://doi.org/10.1109/TPCG.2003.1206950","url":null,"abstract":"The multi-modal information presentation integrated into the virtual environments can stimulate different senses, increase the user's sense of immersion, and the amount of information accepted and processed by the user. The increase of information may reduce the error and time taken to complete a task. This paper presents our approach for integrating 3D sound into virtual assembly environment for the investigation of the effect of visual and 3D sound feedback on assembly task-performance in virtual environments. A responsive workbench-based experimental platform that brings together technologies such as constraint-based assembly simulation, ultrasonic tracking, and 3D sound generation has been set-up. Several experiments are being conducted to explore and evaluate the effect of neutral, visual, auditory and integrated feedback mechanism on the sense of presence and task performance in the context of assembly simulation in virtual environment.","PeriodicalId":132138,"journal":{"name":"Proceedings of Theory and Practice of Computer Graphics, 2003.","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116800432","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
Generalizing video textures 概括视频纹理
Proceedings of Theory and Practice of Computer Graphics, 2003. Pub Date : 2003-06-03 DOI: 10.1109/TPCG.2003.1206925
P. Phillips, G. Watson
{"title":"Generalizing video textures","authors":"P. Phillips, G. Watson","doi":"10.1109/TPCG.2003.1206925","DOIUrl":"https://doi.org/10.1109/TPCG.2003.1206925","url":null,"abstract":"This paper presents the results of a project generalizing the 'video textures' technique as described in (Schodl et al., 2000). The algorithms used were generalized such that either video or audio input clips could be used to create novel and infinitely varying video or audio 'textures'. The algorithms were tested and refined to produce acceptable results for both forms of media, and a simple interface was developed allowing the application to be easily extended to other forms of media commonly used in computer graphics such as motion capture.","PeriodicalId":132138,"journal":{"name":"Proceedings of Theory and Practice of Computer Graphics, 2003.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131255117","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: 4
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