First International Symposium on Cyber Worlds, 2002. Proceedings.最新文献

Synchronous parallel GA with nearly zero sequential computations 同步并行遗传算法，几乎为零顺序计算

First International Symposium on Cyber Worlds, 2002. Proceedings. Pub Date : 2002-11-06 DOI: 10.1109/CW.2002.1180893

N. Okamoto, Q. Zhao

引用次数: 3

Key exchange protocols for multiparty communication services 用于多方通信服务的密钥交换协议

First International Symposium on Cyber Worlds, 2002. Proceedings. Pub Date : 2002-11-06 DOI: 10.1109/CW.2002.1180885

Chao-Wen Chan, Chinchen Chang

引用次数: 1

Efficient data compression methods for multi-dimensional sparse array operations 多维稀疏数组操作的高效数据压缩方法

First International Symposium on Cyber Worlds, 2002. Proceedings. Pub Date : 2002-11-06 DOI: 10.1109/CW.2002.1180861

Chun-Yuan Lin, Yeh-Ching Chung, Jenshiuh Liu

{"title":"Efficient data compression methods for multi-dimensional sparse array operations","authors":"Chun-Yuan Lin, Yeh-Ching Chung, Jenshiuh Liu","doi":"10.1109/CW.2002.1180861","DOIUrl":"https://doi.org/10.1109/CW.2002.1180861","url":null,"abstract":"For sparse array operations, in general, the sparse arrays are compressed by some data compression schemes in order to obtain better performance. The Compressed Row/Column Storage (CRS/CCS) schemes are the two common used data compression schemes for sparse arrays in the traditional matrix representation (TMR). When extended to higher dimensional sparse arrays, array operations using the CRS/CCS schemes usually do not perform well. We propose two data compression schemes, extended Karnaugh map representation Compressed Row/Column Storage (ECRS/ ECCS) for multi-dimensional sparse arrays based on the EKMR scheme. To evaluate the proposed schemes, both theoretical analysis and experimental tests are conducted. In theoretical analysis, we analyze CRS/CCS and ECRS/ECCS schemes in terms of the time complexity, the space complexity, and the range of their usability for practical applications. In experimental test, we compare the performance of matrix-matrix addition and matrix-matrix multiplication sparse array operations that use the CRS/CCS and ECRS/ECCS schemes. The experimental results show that sparse array operations based on the ECRS/ECCS schemes outperform those based on the CRS/CCS schemes for all test samples.","PeriodicalId":376322,"journal":{"name":"First International Symposium on Cyber Worlds, 2002. Proceedings.","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123785876","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

Beyond flat panning and zooming: dolly-enhanced SQTVR 超越平面平移和缩放:多莉增强SQTVR

First International Symposium on Cyber Worlds, 2002. Proceedings. Pub Date : 2002-11-06 DOI: 10.1109/CW.2002.1180925

Noor Alamshah Bolhassan, W. Martens, Michael Cohen

{"title":"Beyond flat panning and zooming: dolly-enhanced SQTVR","authors":"Noor Alamshah Bolhassan, W. Martens, Michael Cohen","doi":"10.1109/CW.2002.1180925","DOIUrl":"https://doi.org/10.1109/CW.2002.1180925","url":null,"abstract":"This paper describes a novel solution to limitations associated with interactive display of immersive stereographic imagery via Apple's QuickTime Virtual Reality (QTVR) technology. A unique multinode implementation providing Stereographic QTVR (termed here SQTVR) enables display of pairs of images exhibiting binocular parallax, and the stereoscopic depth percept that results is enhanced by motion parallax inherent in a subtle translation of the viewpoint through the displayed 3D scene. Stereoscopic depth is maintained as a user pans freely through a complete 360/spl deg/ horizontal panorama, while the system imposes a slight dollying in and out of the scene as a user's view rotates left or right. In addition, SQTVR solves two problems that can be observed when users of conventional QTVR technology change viewing positions, and these are problems that generally interfere with a user's sense of immersion and telepresence. First, objects that should be revealed (\"disoccluded\") by a change in viewing position remain occluded behind objects in the foreground of the image. Second, objects that should loom large as they approach the viewing position are displayed in an unchanging proportion relative to image elements in the background. SQTVR's multinode implementation addresses these two limitations of conventional QTVR technology in a natural way by tiling a plane with equilateral triangles connecting potential viewing positions.","PeriodicalId":376322,"journal":{"name":"First International Symposium on Cyber Worlds, 2002. Proceedings.","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122603160","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

An agent based e-marketplace over e-business 基于代理的电子商务市场

First International Symposium on Cyber Worlds, 2002. Proceedings. Pub Date : 2002-11-06 DOI: 10.1109/CW.2002.1180894

Ying-Hong Wang, Wen-Nan Wang, Chen-An Wang, An-Cheng Cheng

引用次数: 4

Free-form deformation with automatically generated multiresolution lattices 自由变形与自动生成的多分辨率格

First International Symposium on Cyber Worlds, 2002. Proceedings. Pub Date : 2002-11-06 DOI: 10.1109/CW.2002.1180915

Yutaka Ono, Bing-Yu Chen, T. Nishita, Jieqing Feng

引用次数: 15

Internet voting: concerns and solutions 网络投票:关注与解决方案

First International Symposium on Cyber Worlds, 2002. Proceedings. Pub Date : 2002-11-06 DOI: 10.1109/CW.2002.1180888

Chuankun Wu, R. Sankaranarayana

引用次数: 11

Direct segmentation for reverse engineering 直接分割逆向工程

First International Symposium on Cyber Worlds, 2002. Proceedings. Pub Date : 2002-11-06 DOI: 10.1109/CW.2002.1180856

M. Vanco, G. Brunnett

{"title":"Direct segmentation for reverse engineering","authors":"M. Vanco, G. Brunnett","doi":"10.1109/CW.2002.1180856","DOIUrl":"https://doi.org/10.1109/CW.2002.1180856","url":null,"abstract":"In reverse engineering a physical object is digitally reconstructed from a set of boundary points. In the segmentation phase these points are grouped into subsets to facilitate consecutive steps as surface fitting. In this paper we present a step segmentation method with subsequent classification of simple algebraic surfaces. Our method is direct in the sense that it operates directly on the point set in contrast to other approaches that are based on a triangulation of the data set. The segmentation process involves a fast algorithm for k-nearest neighbors search and an estimation of first and second order surface properties. First order segmentation, based on normal vectors, provides an initial subdivision of the surface and detects sharp edges as well as flat or highly curved areas. One of the main features of our method is to proceed by alternating the steps of segmentation and normal vector estimation. Second order segmentation subdivides the surface according to principal curvatures and provides a sufficient foundation for the classification of simple algebraic surfaces. If the boundary of the original object contains such surfaces the segmentation is optimized based on the result of a surface fitting procedure.","PeriodicalId":376322,"journal":{"name":"First International Symposium on Cyber Worlds, 2002. Proceedings.","volume":"90 B4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124400838","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: 11

Function-based 3D web visualization 基于函数的3D网页可视化

First International Symposium on Cyber Worlds, 2002. Proceedings. Pub Date : 2002-11-06 DOI: 10.1109/CW.2002.1180910

Lai Feng Min, A. Sourin, K. Levinski

引用次数: 3

Topological morphing using Reeb graphs 使用Reeb图的拓扑变形

First International Symposium on Cyber Worlds, 2002. Proceedings. Pub Date : 2002-11-06 DOI: 10.1109/CW.2002.1180914

Pizzanu Kanonchayos, T. Nishita, Y. Shinagawa, T. Kunii

引用次数: 21