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Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540)最新文献

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SoftBoard-a Web-based application sharing system for distance education softboard—基于web的远程教育应用共享系统
Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540) Pub Date : 2000-03-27 DOI: 10.1109/ITCC.2000.844248
Krishna K. Adusumilli, B. Alhalabi, S. Hsu
{"title":"SoftBoard-a Web-based application sharing system for distance education","authors":"Krishna K. Adusumilli, B. Alhalabi, S. Hsu","doi":"10.1109/ITCC.2000.844248","DOIUrl":"https://doi.org/10.1109/ITCC.2000.844248","url":null,"abstract":"The paper describes the development of SoftBoard, a Web-based application sharing system that provides a convenient writing and sketching tool in delivering instructions and conducting virtual office hours for distance education over the Internet. It is a Web-based shared environment where students and instructors can participate in exchanging information in real time effectively. Similar systems in the form of whiteboards exist today but are quite different from SoftBoard. A SoftBoard system can be invoked by users equipped with a standard browser and Internet connection. A light pen can also be used with SoftBoard to provide a convenient way for creating non-textual contents freehand. Several experiments using different computer labs were conducted. Feedback from participants was very positive.","PeriodicalId":146581,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124382503","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
How many pixels to watermark? 要加多少像素水印?
Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540) Pub Date : 2000-03-27 DOI: 10.1109/ITCC.2000.844176
R. Chandramouli, N. Memon
{"title":"How many pixels to watermark?","authors":"R. Chandramouli, N. Memon","doi":"10.1109/ITCC.2000.844176","DOIUrl":"https://doi.org/10.1109/ITCC.2000.844176","url":null,"abstract":"Watermark design and detection have been studied as two separate problems so far. However, we show that, if the watermarking algorithm is based on the watermark detection method, then significant gains can be achieved. With a watermark detector based on a sequential hypothesis test rather than a fixed sample size test, the number of watermark pixels can be reduced almost by a factor of two for small detection error probabilities. This is because, the sequential hypothesis test requires less (average) number of pixels to detect the presence/absence of a watermark compared to a fixed sample size detector. The savings in the number of pixels to be watermarked results in an increased immunity to host signal attacks such as cropping. Degradation in the signal quality due to redundant watermarking is also minimized. Further, applications such as DVD require minimal amount of watermarking. The computational efficiency of the proposed watermark detector can also be exploited to efficiently search for watermarks in large image databases.","PeriodicalId":146581,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131616025","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: 10
Conceptual level graph theoretic design and development of complex information system 复杂信息系统的概念层图论设计与开发
Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540) Pub Date : 2000-03-27 DOI: 10.1109/ITCC.2000.844269
S. Choudhury, N. Chaki, S. Pramanik, S. Bhattacharya
{"title":"Conceptual level graph theoretic design and development of complex information system","authors":"S. Choudhury, N. Chaki, S. Pramanik, S. Bhattacharya","doi":"10.1109/ITCC.2000.844269","DOIUrl":"https://doi.org/10.1109/ITCC.2000.844269","url":null,"abstract":"This paper introduces a graph-oriented model for the conceptual level design of large, complex information systems. This has been shown to be highly effective to the system designer from the perspectives of maintainability and upgradability. Basically due to the flat structure and the lack of holding multidimensional data, the relational model does not provide a structural approach to the system designer. The alternative object oriented model offers the structured approach but also is not able to describe various intermodular relationships spread over the same or different levels within a data model. The graph data model allows dynamic regrouping of related entities at the designers' level. We have proposed an appropriate data structure and the corresponding DDL has been developed. Test runs on a simulated environment further establish its computational efficiency.","PeriodicalId":146581,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126594981","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
A robust digital watermarking based on a statistic approach 基于统计方法的鲁棒数字水印
Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540) Pub Date : 2000-03-27 DOI: 10.1109/ITCC.2000.844193
Pei-Min Chen
{"title":"A robust digital watermarking based on a statistic approach","authors":"Pei-Min Chen","doi":"10.1109/ITCC.2000.844193","DOIUrl":"https://doi.org/10.1109/ITCC.2000.844193","url":null,"abstract":"Digital watermarking is an emerging research area for copyright protection of electronic documents and media, which is one of the most important problems to be solved in the cyberspace society. A statistic approach for embedding and extracting a digital watermark on an image is proposed. This approach is based on the realization that a stego-image after watermark attacks should preserve the characteristics of the stego-image if the stego-image after attacks retains its commercial values. In other words, the appearance of the image after attacks is still clearly visible and similar to the original image. This kind of preservation can be reflected as the variances of color levels of pixels both in stego-without-attacks- and stego-with-attacks-images are most likely the same. The embedded digital watermark by this approach seems robust after several attacks are performed on the stego-image.","PeriodicalId":146581,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114702239","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: 10
Real-time collaboration in heterogeneous computing environments 异构计算环境中的实时协作
Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540) Pub Date : 2000-03-27 DOI: 10.1109/ITCC.2000.844214
I. Marsic
{"title":"Real-time collaboration in heterogeneous computing environments","authors":"I. Marsic","doi":"10.1109/ITCC.2000.844214","DOIUrl":"https://doi.org/10.1109/ITCC.2000.844214","url":null,"abstract":"The recent proliferation of computing devices and the contexts in which they are used demand diversity in collaborative applications as well. The objective of our research is to enable conferees to share applications that are adapted to their (heterogeneous) computing environments. This is achieved by using eXtensible Markup Language (XML) for the communication medium. The conferees share the same data or a subset of that data represented in XML, but they may see it displayed in different ways as needed or desired. The framework adapts to the computing and network environment and transforms information so that it matches the client's local capabilities and resources.","PeriodicalId":146581,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540)","volume":"188 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121849153","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: 16
Simulation of hardware support for OpenGL graphics architecture 模拟硬件支持OpenGL图形架构
Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540) Pub Date : 2000-03-27 DOI: 10.1109/ITCC.2000.844241
T. Paltashev, G. Abla, N. Govind
{"title":"Simulation of hardware support for OpenGL graphics architecture","authors":"T. Paltashev, G. Abla, N. Govind","doi":"10.1109/ITCC.2000.844241","DOIUrl":"https://doi.org/10.1109/ITCC.2000.844241","url":null,"abstract":"The growing number of applications for 3D graphics and imaging systems in the mass market requires the customized approach to the design of high-performance 3D graphics and imaging system architectures. That fact coupled with the strong trends to industrial standardization of graphics API, such as OpenGL, leads to enhanced portability for imaging and graphics applications. The progress on the hardware support of API functionality gives a real possibility to use a top-down approach in the design of custom graphics/imaging systems based on the mixed hardware/software implementation of the OpenGL architecture. Software simulation is a relatively cheap and fast way for initial graphics architecture template development and evaluation to acquire the structure and parameters that can be used later for HDL elaboration and simulation. This paper discusses a 3D graphics and imaging system architecture model implementation based on OpenGL API hardware support simulation. The object-oriented approach has been used for this development of analytic and software models simulating hardware units on different stages of the graphics pipeline. The Interactive Imaging System Architecture Composer has been developed in this project for fast run-time simulation management, data acquisition and interpretation. The expandable set of architecture templates uses a reconfigurable shared library of \"virtual hardware units\" simulating the different hardware structures for graphics and image processing.","PeriodicalId":146581,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540)","volume":"325 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116598391","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
Searching information in large and complex distributed information systems: balance between implicit and explicit acquisition of the user model 大型复杂分布式信息系统中的信息搜索:用户模型的隐式和显式获取之间的平衡
Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540) Pub Date : 2000-03-27 DOI: 10.1109/ITCC.2000.844253
F. Ferri, P. Grifoni
{"title":"Searching information in large and complex distributed information systems: balance between implicit and explicit acquisition of the user model","authors":"F. Ferri, P. Grifoni","doi":"10.1109/ITCC.2000.844253","DOIUrl":"https://doi.org/10.1109/ITCC.2000.844253","url":null,"abstract":"The knowledge about users acquired and formalised through a model may be used in more than one way in an interactive intelligent system. At the higher level, these models may be used for recognition and interpretation of information about the user's behaviour, to provide him with help facilities and a set of useful information. Literature mainly proposes two different strategies devoted to the acquisition of the user models; that is the implicit acquisition and the explicit acquisition. Both the previously introduced approaches are able to satisfy acquisition needs. In particular, this paper proposes an integrated perspective of the two previously introduced approaches and discusses the balance between implicit and explicit acquisition taking into account the user behaviour. The previously introduced problems are treated considering a large and complex distributed information system (i.e. intranet system) in a specific domain: medical folders and medical knowledge bases.","PeriodicalId":146581,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124759446","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
Integrating structured data and text: a multi-dimensional approach 整合结构化数据和文本:一种多维方法
Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540) Pub Date : 2000-03-27 DOI: 10.1109/ITCC.2000.844234
Jinho Lee, D. Grossman, O. Frieder, M. C. McCabe
{"title":"Integrating structured data and text: a multi-dimensional approach","authors":"Jinho Lee, D. Grossman, O. Frieder, M. C. McCabe","doi":"10.1109/ITCC.2000.844234","DOIUrl":"https://doi.org/10.1109/ITCC.2000.844234","url":null,"abstract":"Multidimensional databases are used for online analytic processing (OLAP) applications with great success. We introduce a method of using OLAP techniques on a text collection: combining text searching and ranking techniques from information retrieval and the slicing, dicing, and drill-down from OLAP. Our approach integrates structured and unstructured data and takes advantage of the data hierarchies found in the structured data. We describe a prototype where standard multidimensional database tools are used to implement typical information retrieval functionality such as Boolean retrieval and relevance ranking.","PeriodicalId":146581,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131282396","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: 22
On optimal packetization of embedded bitstreams 嵌入式比特流的最优分组
Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540) Pub Date : 2000-03-27 DOI: 10.1109/ITCC.2000.844187
Zixiang Xiong, Xiaolin Wu
{"title":"On optimal packetization of embedded bitstreams","authors":"Zixiang Xiong, Xiaolin Wu","doi":"10.1109/ITCC.2000.844187","DOIUrl":"https://doi.org/10.1109/ITCC.2000.844187","url":null,"abstract":"We investigate the problem of packetizing multiple embedded bitstreams to improve the error resilience of source codes. We discuss various packetization schemes against packet erasure at both low and high bit rates. We formulate various versions of packetization of multiple embedded bitstreams for minimum distortion as discrete optimization problems, and propose efficient algorithms to compute globally optimal solutions to these problems.","PeriodicalId":146581,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132309064","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
A wavelet-based image watermarking scheme 一种基于小波的图像水印方案
Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540) Pub Date : 2000-03-27 DOI: 10.1109/ITCC.2000.844194
A. Lumini, D. Maio
{"title":"A wavelet-based image watermarking scheme","authors":"A. Lumini, D. Maio","doi":"10.1109/ITCC.2000.844194","DOIUrl":"https://doi.org/10.1109/ITCC.2000.844194","url":null,"abstract":"A wavelet-based image watermarking scheme is proposed, based on the insertion of pseudo-random codes in the frequency domain. The original image is required for the watermark detection. The \"strength\" of the signature to be embedded depends on the image to be marked, thus fitting signal capacity. The experimental results prove that the method is more tamper resistant and less perceptible for any type of images than other well-known private methods in the frequency domains.","PeriodicalId":146581,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115007297","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: 71
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