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Proceedings of the International Conference on Multimedia Computing and Systems

15-18 May 1995

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Displaying Results 1 - 25 of 46
  • Author index

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (86 KB)
    Freely Available from IEEE
  • A scalable video-on-demand service for the provision of VCR-like functions

    Publication Year: 1995, Page(s):65 - 72
    Cited by:  Papers (13)  |  Patents (43)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (684 KB)

    One approach to supporting continuous media traffic is via resource reservation at connection establishment time. The shortcomings of this approach are the lack of flexibility in re-negotiating bandwidth parameters after connection establishment and the inability to react to changing server load conditions. In this paper, we propose a “selected access scheme” for re-negotiating continu... View full abstract»

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  • IMPACT: an Interactive Multimedia Program for Alcoholism Assessment and Counseling Training

    Publication Year: 1995, Page(s):318 - 322
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (628 KB)

    Nearly 14% of American adults have met the DSM-III-R (Diagnostic and Statistical Manual of Mental Disorders, 3rd Edition, Revised) criteria for lifetime alcohol abuse or dependence. Although it has been estimated that 20% of patients visiting physicians qualify for an alcoholic diagnosis, the early stages of excessive drinking often remain unrecognized in general medical practice and in hospitals ... View full abstract»

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  • A multimedia news delivery system over an ATM network

    Publication Year: 1995, Page(s):56 - 63
    Cited by:  Papers (8)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1056 KB)

    We discuss a multimedia news system that we have developed in the Multimedia Information Research Laboratory at the University of Ottawa and beyond. The system consists of a production server for document authoring, a conferencing system for collaborative news article creation, a news database server with aging and archiving, and user sites. The goal was to have all components of the system commun... View full abstract»

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  • HYPEREX: an intelligent tutoring hypertext system for learning programming

    Publication Year: 1995, Page(s):341 - 344
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    Hypertext techniques applied in teaching environments arouse considerable interest as they allow students to construct learning paths directed by their own aims and knowledge. However, for the very reason that hypertext allows knowledge construction through exploration, it stimulates talented students but tends to penalize those less skilled in self-managing their learning process. We present HYPE... View full abstract»

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  • Pipelined disk arrays for digital movie retrieval

    Publication Year: 1995, Page(s):312 - 317
    Cited by:  Papers (6)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    We develop a reliable disk array based storage architecture for digital video retrieval. Our goals are two fold: maximizing the number of concurrent real time sessions while minimizing the buffering requirements, and ensuring a high degree of reliability. The first goal is achieved by adopting a pipelined approach and by reducing latencies through specialized disk caching and constrained data plac... View full abstract»

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  • Theft-resistant video browsing using filtered versions of compressed sequences

    Publication Year: 1995, Page(s):50 - 55
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB)

    Browsing, when used as a sales tool for video sequences, must balance the needs and wants of the customer and merchant: the merchant must offer the customer a preview to allow the customer to select what he or she wants but the merchant does not want to give away the product without payment from the customers. While key-frame browsing discourages theft by not giving the customer the full clip in a... View full abstract»

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  • Optimizing the placement of multimedia objects on disk arrays

    Publication Year: 1995, Page(s):158 - 165
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    The immensity of the data transfer requirements of multimedia objects will require multimedia servers to be founded on disk arrays. To effectively utilize a disk array and hence to maximize the number of clients that can be serviced simultaneously, a multimedia server must interleave the storage of each media stream among the disks in the array. We identify two placement policies for organizing st... View full abstract»

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  • Networking for success in cyberspace

    Publication Year: 1995, Page(s):335 - 340
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    Several key technologies are converging to create the emerging cyberspace. We characterize this convergence process as one of cumulative synthesis and suggest that the network mode of organization is the most appropriate for facilitating convergence View full abstract»

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  • Presentation layer primitives for the layered multimedia data model

    Publication Year: 1995, Page(s):231 - 238
    Cited by:  Papers (13)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (716 KB)

    The Layered Multimedia Data Model (LMDM) adds structure to the problem of specifying multimedia compositions by dividing the task into smaller, more manageable pieces. This paper outlines the basic constructs of the third LMDM layer, the Data Presentation Layer (DPL). The DPL allows specification of multimedia presentations, which describe the audio and visual display of temporally linked data obj... View full abstract»

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  • Secure pay-per-view testbed

    Publication Year: 1995, Page(s):308 - 311
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    Trials of video on demand and pay-per-view systems are underway in many countries, and as a result, many cable and telecommunications companies are having to upgrade or replace their distribution networks. Video streams must be secure in order to prevent unauthorized viewing of the programs being transmitted, yet most existing security systems do not make use of the potential for bidirectional sig... View full abstract»

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  • Multiple perspective interactive video

    Publication Year: 1995, Page(s):202 - 211
    Cited by:  Papers (28)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1112 KB)

    We present our approach to Multiple Perspective Interactive (MPI) video. In MPI video, a viewer could view an event from multiple perspectives, even based on the contents of the events. Using strategically located multiple cameras a set of image sequences is obtained and used to build a 3-dimensional model of the important events in a scene. Considering the request of a user, the system decides th... View full abstract»

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  • Demand paging for video-on-demand servers

    Publication Year: 1995, Page(s):264 - 272
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (916 KB)

    With recent advances in storage and network technology it is now possible to provide video on demand (VOD) service, thereby eliminating the inflexibility inherent in today's broadcast cable systems. A VOD server is a computer system that stores videos in compressed digital form and provides support for the concurrent transmission of different portions of the compressed video data to the various vi... View full abstract»

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  • The MORENA model for hypermedia authoring and browsing

    Publication Year: 1995, Page(s):42 - 49
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (756 KB)

    This paper describes MORENA (Multimedia ORganization Employing a Network Approach), a Petri-net based platform for the description and execution of hypermedia applications. All the parts that compose the application, such as sound, video, text and buttons are described in this model and the browsing semantics are also specified. The MORENA model provides support for dynamic data, such as video or ... View full abstract»

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  • PhotoFile: a digital library for image retrieval

    Publication Year: 1995, Page(s):292 - 295
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The paper describes a digital photo archiving and retrieval system. The system employs natural language processing technology to retrieve images based on their captions, and incorporates morphological, syntactic, and semantic information View full abstract»

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  • MediaWare: on multimedia synchronization

    Publication Year: 1995, Page(s):150 - 157
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    Temporal relationships are inevitable among multimedia objects. Synchronization of multiple data streams in time has thus been recognized as a crucial requirement for multimedia applications. We study the synchronization requirements among distributed multimedia objects. We describe a temporal model that deals with interstream and intrastream synchronization requirements in live media objects. Bot... View full abstract»

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  • A unified approach to temporal segmentation of motion JPEG and MPEG compressed video

    Publication Year: 1995, Page(s):81 - 88
    Cited by:  Papers (36)  |  Patents (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    A common framework for rapid scene analysis for detecting scene changes in compressed motion JPEG and MPEG videos is proposed. We develop algorithms to detect both abrupt and gradual scene changes. The algorithms operate directly on the DC sequence which can be easily extracted from motion JPEG and MPEG compressed video without decompression. The DC images capture most of the essential “glob... View full abstract»

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  • User recovery of audio operations

    Publication Year: 1995, Page(s):329 - 334
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    Computer interfaces that support user recovery can radically alter a user's interaction style. Users can explore alternatives freely, secure in the knowledge that they can undo actions and restore previous states if necessary. A text-editor, like EMACS, where users can restore the state of an editing session to a correct previous state, is an example of such a system. Editors for textual, graphica... View full abstract»

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  • Video acquisition on live hypermedia

    Publication Year: 1995, Page(s):175 - 181
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    Live hypermedia is a new type of hypermedia which can acquire a desired set of video scenes from television broadcasting programs using the video scene recognition techniques. Information nodes and links between them care dynamically determined corresponding to the structure of the recognition models. In this paper, a state-transition type expression is proposed to describe flexible and compound m... View full abstract»

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  • A remote presentation agent for multimedia databases

    Publication Year: 1995, Page(s):223 - 230
    Cited by:  Papers (8)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    The successful realization of distributed multimedia information systems depend on the ability to overcome the synchronization problems involved in the end-to-end presentation of multimedia information. In this paper we discuss multimedia synchronization at the source, network and user-interface levels of the distributed multimedia information systems. In order to resolve the synchronization probl... View full abstract»

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  • Intelligent classroom information agent multimedia lab and visual guides for Datastructures II

    Publication Year: 1995, Page(s):302 - 305
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    Our research focuses on the redesign of an undergraduate computer science course, Datastructures II. We are experimenting with the concept of intelligent classroom information agents (ICIA's) as a means to facilitate information and learning. It forces us to assign new roles to teachers, students and the Center for Technology in Education (CTE) staff as defined by the ICIA standard. What this impl... View full abstract»

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  • Spatio-temporal modeling of video data for on-line object-oriented query processing

    Publication Year: 1995, Page(s):98 - 105
    Cited by:  Papers (21)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    The paper presents a framework for data modeling and semantic abstraction of image/video data. The framework is based on spatio-temporal information associated with salient objects in an image or in a sequence of video frames and on a set of generalized n-ary operators defined to specify spatial and temporal relationships of objects present in the data. The methodology presented in this paper can ... View full abstract»

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  • A formal basis for structured multimedia collaborations

    Publication Year: 1995, Page(s):194 - 201
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (788 KB)

    A formal basis for multimedia collaborations is proposed. The formal basis establishes a precise mathematical framework for supporting a wide spectrum of structured collaborative tasks, ranging from sample meetings and conferences to classrooms and examinations, and from corporate negotiations, work flow tasks, and team design endeavours to courtroom hearings. We mechanize three levels of abstract... View full abstract»

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  • Scheduling and data distribution in a multiprocessor video server

    Publication Year: 1995, Page(s):256 - 263
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (772 KB)

    We address the problem of distributing and scheduling movies on a multiprocessor video server. We also address the issue of scheduling communication over the multiprocessor switch for the playback of the scheduled movies. A solution is proposed that addresses these three issues at once. The proposed solution minimizes contention for links over the switch. The proposed solution makes movie scheduli... View full abstract»

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  • The Concord algorithm for synchronization of networked multimedia streams

    Publication Year: 1995, Page(s):31 - 40
    Cited by:  Papers (17)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    Synchronizing different data streams from multiple sources simultaneously at a receiver is one of the basic problems involved in multimedia distributed systems. This requirement stems from the nature of packet based networks which can introduce end-to-end delays that vary both within and across streams. We present a new algorithm called Concord, which provides an integrated solution for these sing... View full abstract»

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