Proceedings International Conference on Information Technology: Coding and Computing最新文献

{"title":"Current trends in multimedia communications and computing","authors":"K.P. Subbalakshmi","doi":"10.1109/ITCC.2001.918800","DOIUrl":"https://doi.org/10.1109/ITCC.2001.918800","url":null,"abstract":"Multimedia, as the name implies, is a combination of different and diverse media types, for example: image, video, graphics, speech, text and so on. As the information age grows, multimedia systems have also grown in popularity, especially in the arenas of education and entertainment. Examples of such applications are telelearning, home shopping, banking, tele-medicine, pay TV, video-on-demand, immersi-presence, virtual reality and so on. Along with this growth, the burden on the physical media that support multimedia applications has also increased. This implies that the technologies pertaining to communication and coding of multimedia applications also needs to grow in order to keep up with this demand. This special session is devoted to addressing some issues and solutions to the problems in handling multimedia services.","PeriodicalId":318295,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing","volume":"300 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122539442","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":"FlexXML: engineering a more flexible and adaptable web","authors":"A. Kaplan, J. Lunn","doi":"10.1109/ITCC.2001.918830","DOIUrl":"https://doi.org/10.1109/ITCC.2001.918830","url":null,"abstract":"Engineering applications for the World Wide Web is becoming increasingly difficult. Web engineers are forced to contend with a heterogeneous collection of Web services, which differ in terms of available bandwidth, display quality and connection type. Faced with these sources of heterogeneity, Web engineers often publish separate, typically redundant Web sites, each of which is tailored into a specific Web device. This paper describes an XML-based approach, called FlexXML, thant enables a more flexible and adaptable Web. Using FlexXML, a Web engineer publishes a single Web site, using XML to describe the site's content and XSL to specify a collection of style sheets. FlexXML allows a Web user to specify a document quality (e.g., text- or graphics-based) that they desire from a Web site. Based upon the Web user's preferences and browser environment, the FlexXML framework automatically selects a suitable XSL style sheet, creates the document and delivers the appropriate content.","PeriodicalId":318295,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128479481","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":"Watermarking capacity of digital images based on domain-specific masking effects","authors":"Ching-Yung Lin, Shih-Fu Chang","doi":"10.1109/ITCC.2001.918771","DOIUrl":"https://doi.org/10.1109/ITCC.2001.918771","url":null,"abstract":"Our objective is to find a theoretical watermarking capacity bound of digital images based on domain-specific masking effects. We first show the capacity of private watermarking in which the power constraints are not uniform. Then, we apply several domain-specific Human Vision System approximation models to estimate the power constraints and then show the theoretical watermarking capacity of an image in a general noisy environment. Note that we consider all pixels, watermarks and noises to be discrete values, which occur in realistic cases.","PeriodicalId":318295,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130298729","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":"Working documents automatic generation using an adaptive editor","authors":"F. Ferri, P. Grifoni, M. Padula, Amanda Reggiori","doi":"10.1109/ITCC.2001.918834","DOIUrl":"https://doi.org/10.1109/ITCC.2001.918834","url":null,"abstract":"The production process of documents was deeply transformed by the information technology influence on document writing activities. The wide use of personal computers produced a transformation of the document creation process. It is becoming a process of transformation and aggregation of documents. The different phases of this process are becoming more rapid due to the reusability of available documents by means of the cut and paste functionality. Internet diffusion is improving transformation of the document production process according to a co-operative approach. Indeed, the Internet is making available a large and growing amount of information, and focuses its attention on global information starting from local information. Locally and globally available information may be used to form a new document according to copyright problems. It is not, however, easy to retrieve and organise the large amount of information potentially available on the Internet according to the author's information goals. In this context there is a need for tools for editing and searching documents, that enable the automatic creation of personalised working documents. The aim of the paper is to define an approach for the on-line driven creation of documents, starting from the definition of their structures using shapes and semantics of their information.","PeriodicalId":318295,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125774969","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":"Advanced 3b4b channel coding for low error-rate optical links at 2.488 Gbit/s","authors":"M. Reinecke, K. Hansen","doi":"10.1109/ITCC.2001.918850","DOIUrl":"https://doi.org/10.1109/ITCC.2001.918850","url":null,"abstract":"We report on the performance of an optimized parallel channel coder for high-speed optical transmission systems. The coding properties are discussed by an evaluation of the signal statistics of the coded pulse train in the time and frequency domain. The discussion is mainly based on the results for the power spectral density (PSD) and the autocorrelation function (AKF). The theoretical investigations have been verified measurements with a developed 2.488 Gbit/s optical transmission system. Reliability studies have shown a system's bit error rate below 10/sup -13/.","PeriodicalId":318295,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131721017","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":"On multiple access and capacity in frequency-selective channels","authors":"P. Flikkema","doi":"10.1109/ITCC.2001.918787","DOIUrl":"https://doi.org/10.1109/ITCC.2001.918787","url":null,"abstract":"Investigates the problem of improving communication rates for frequency-selective multi-access channels (MACs). In this context, multi-pulse methods offer a new opportunity to revisit MAC approaches that are aware of and exploit channel characteristics. For the single-link case, multi-pulse methods such as OFDM split the channel into a set of orthogonal subchannels, or dimensions, and enable the use of Shannon's water-filling technique to achieve capacity. This paper proposes MAC approaches based on water-filling for high-speed ad-hoc wireless networks. The basic framework divides time into uniform slots; during each interval, the active links must share the subchannels, with each link defined by its set of per-subchannel SNRs. Using this framework, pragmatic protocols are proposed that balance overall capacity and per-link quality of service. They are based on adaptively allocating slots and subchannels using knowledge of the links.","PeriodicalId":318295,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131745073","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":"Models and algorithms for bandwidth allocation of CBR video streams in a VoD system","authors":"O. Hadar, M. Segal","doi":"10.1109/ITCC.2001.918781","DOIUrl":"https://doi.org/10.1109/ITCC.2001.918781","url":null,"abstract":"Discusses the problem of bandwidth allocation of constant bit rate (CBR) video streams to compressed video streams in a video-on-demand (VoD) system. We consider the instance of a VoD system where compressed digital video is transmitted with a CBR over a network with limited capacity. This paper has two main purposes: the first is to develop an efficient algorithm for determining the optimal bandwidth under the constraint of minimal buffer size, and the second is to make a comparison between different approaches for bandwidth allocation under the constraint of maximum bandwidth utilization. Together with his request for a specific video stream, each client in the system sends his buffer size and the maximum waiting time for his allowable delay. According to this information, the video server determines a range of transmission rates that can be used by the client without violating the client-buffer constraints (i.e. overflow or underflow). The main contribution of this paper is to suggest a method for allocating a variable network bandwidth on stream initiation in order to service as many users as possible while providing each user with the highest quality service.","PeriodicalId":318295,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130815446","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":"Special sessions on multimedia security and watermarking applications","authors":"D. Kundur, Ching-Yung Lin","doi":"10.1109/ITCC.2001.918763","DOIUrl":"https://doi.org/10.1109/ITCC.2001.918763","url":null,"abstract":"Summary form only given. This series of special sessions examine multimedia security from both theoretical and applications-oriented perspectives. Our aim is to help advance security technology, assess its appropriateness for certain problems, and broaden its usefulness to intellectual property management. Based on the success of last year?s sessions, we hope to continue the tradition of providing an open and objective forum for multimedia security issues. This year, we will have 17 papers in these special sessions. Three of them are watermarking techniques in the printed format. Five papers cover novel imagehide0 watermarking techniques. Three theoretical analysis papers will be shown in these sessions. There will be two papers covering the attacks and benchmarking of watermarking methods. In addition to the image videos watermarking methods, there will be two novel audio watermarking, techniques and one graphic watermarking technique in these special sessions. We will also have one paper in the database system. The papers are briefly summarized.","PeriodicalId":318295,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115052510","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":"Network conscious text compression system (NCTCSys)","authors":"Nitin Motgi, A. Mukherjee","doi":"10.1109/ITCC.2001.918836","DOIUrl":"https://doi.org/10.1109/ITCC.2001.918836","url":null,"abstract":"This paper proposes a \"network conscious text compression system\" (NCTCSys) to tackle the problem of transmitting explosively increasing data on the Internet. It can be integrated into different text based transfer protocols like FTP, HTTP and SMTP at the application level to handle text data transmission. We apply the newly developed LIPT encoding method along with BZIP2 and GZIP to compress text. The NCTCSys selection algorithm decides on the best compression method. To share a common encoding/decoding dictionary between the client and the server we use the dictionary management protocol. In a typical congestion and fluctuating scenario of bandwidth we have reduced transmission times by 60.24% using LIPT+GZIP, and by 85.20% using LIPT+BZIP2.","PeriodicalId":318295,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123710309","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":"Web and hypermedia systems","authors":"M. Cannataro","doi":"10.1109/ITCC.2001.918828","DOIUrl":"https://doi.org/10.1109/ITCC.2001.918828","url":null,"abstract":"Web-based hypermedia systems are becoming increasingly popular as tools for user-driven access to information and services. The design of a web-based hypermedia should take into account the different classes of users that are more and more heterogeneous due to world-wide deployment, different interests and social conditions. Other important sources of heterogeneity are: the kind of user terminal (standard PC browser, palmtop, wireless device, etc), the available network bandwidth and latency (wired vs wireless networks), the desired \"resolution\" to observe contents, etc. Thus a web system should be able to adapt itself to different user requirements and environment constraints. To face these problems, in the last years the concepts of User Modeling, Domain Modeling and Hypermedia Design have come together in the Adaptive Hypermedia System (AHS) research theme. Recently, international conferences (Adaptive Hypermedia and Adaptive Webbased Systems, Conceptual Modeling, User Modeling, Hypertext and Hypermedia) and workshops (Adaptive Hypertext and Hypermedia, Web Dynamics) have been held, and new journals (User Modeling and User-Adapted Interaction, The New Review of Hypermedia and Multimedia) appeared. More information can be found at the Adaptive Hypertext & Hypermedia web site (http://wwwis.win.tue.nl/ah/). This Special Session focuses on the use of adaptive techniques, algorithms and tools, in application areas including data management, processing, transmission and querying/searching of multimedia contents. The program of the session includes nine contributed papers, spanning major aspects of web-based hypermedia systems, from AHS, to adaptive search engines, query languages and tools. Adaptive Hypermedia Systems. Adapting information presentation and retrieval through user modeling, by C. Makris, A. Tsakalidis and B. Vassiliadis, describes an interesting architectural framework for intelligent, adaptive and personalized browsing, where the adaptation process is based on co-operative intelligent agents. An interesting algorithm for the scoring of authoritative pages is also presented. FlexXML: engineering a more flexible and adaptive web, by A. Kaplan and J. Lunn, presents a system that allows the delivery of web contents for different user's preferences and browser environment. The proposed approach allows facing different device/bandwidth environments without requiring changes to the user environment. A probabilistic adaptive hypermedia system, by M. Cannataro, A. Cuzzocrea and A. Pugliese, presents an Adaptive Hypermedia System which use a probabilistic approach for User and Application Domain modeling. The adaptation process addresses three different aspects: technology (network and user’s terminal), external environment (location, language, etc.) and user’s behavior (browsing activity). Search Engines. Searching and surfing the web using a semi-adaptive meta-engine, by A. Castellucci, G. Ianni, and D. Vasile, presents an interesting combin","PeriodicalId":318295,"journal":{"name":"Proceedings International Conference on Information Technology: Coding and Computing","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124774604","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}