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Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems

17-23 June 1996

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Displaying Results 1 - 25 of 96
  • Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems

    Publication Year: 1996
    Request permission for commercial reuse | PDF file iconPDF (366 KB)
    Freely Available from IEEE
  • Spatio-temporal indexing for large multimedia applications

    Publication Year: 1996, Page(s):441 - 448
    Cited by:  Papers (61)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (884 KB)

    Multimedia applications usually involve a large number of multimedia objects (texts, images, sounds, etc.). Spatial and temporal relationships among these objects should be efficiently supported and retrieved within a multimedia authoring tool. In this paper, we present several spatial, temporal and spatio-temporal relationships of interest, and propose efficient indexing schemes, based on multidi... View full abstract»

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  • Digital watermarks for audio signals

    Publication Year: 1996, Page(s):473 - 480
    Cited by:  Papers (177)  |  Patents (245)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (858 KB)

    We present a novel technique for embedding digital "watermarks" into digital audio signals. Watermarking is a technique used to label digital media by hiding copyright or other information into the underlying data. The watermark must be imperceptible or undetectable by the user and should be robust to attacks and other types of distortion. In our method, the watermark is generated by filtering a P... View full abstract»

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  • Author index

    Publication Year: 1996
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    Freely Available from IEEE
  • Consumption-based buffer management for maximizing system throughput of a multimedia system

    Publication Year: 1996, Page(s):164 - 171
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (676 KB)

    In a multimedia server, multiple media streams are generally serviced in a cyclic fashion. Due to non-uniform playback rates and asynchronous arrivals of queries, there tends to be spare disk bandwidth in each service cycle. In this paper, we study the issue of dynamically utilizing the spare disk bandwidth and buffer to maximize the system throughput of a multimedia server. We introduce the conce... View full abstract»

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  • A permutation-based pyramid broadcasting scheme for video-on-demand systems

    Publication Year: 1996, Page(s):118 - 126
    Cited by:  Papers (123)  |  Patents (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (732 KB)

    Periodic broadcasting can be used to support near video on demand for popular videos. For a given bandwidth allocation, pyramid broadcasting schemes substantially reduce the viewer latency (waiting) time as compared with conventional broadcasting schemes. Nevertheless, such pyramid schemes typically have substantial storage requirements at the client end, and this results in set top boxes needing ... View full abstract»

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  • Video file allocation over disk arrays for video-on-demand

    Publication Year: 1996, Page(s):160 - 163
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    A video-on-demand (VOD) server needs to store hundreds of movie titles and to support thousands of concurrent accesses. We define the `access profile' as the number of concurrent accesses to each movie title that should be supported by a VOD server. A current high-end magnetic disk array can only support tens of MPEG-2 concurrent accesses, and it is necessary to replicate and/or stripe the hot mov... View full abstract»

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  • A negotiation and resource reservation protocol (NRP) for configurable multimedia applications

    Publication Year: 1996, Page(s):113 - 116
    Cited by:  Papers (6)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    Distributed multimedia applications require negotiation of quality of service (QoS) and resource reservation for distributed application parts and communication links. Negotiation of QoS is a balancing process between the QoS specified by a client, the resource availabilities of the distributed system and the functional capabilities of the distributed application. Negotiation requires application ... View full abstract»

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  • Real-time guaranteed video transport for video-on-demand systems

    Publication Year: 1996, Page(s):156 - 159
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    Addresses two important issues: resource reservation and flow control, for video transmissions in a loss-free and timely delivery way for VOD (video-on-demand) systems. For the first issue, we propose a semi-static resource reservation scheme, which attempts to utilize resources efficiently and maximize the number of clients being serviced concurrently. For the second issue, we propose a server-in... View full abstract»

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  • XCAP: a multistream routing algorithm for multimedia traffic

    Publication Year: 1996, Page(s):104 - 107
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (820 KB)

    The paper presents XCAP, a distributed multimedia routing algorithm. XCAP uses current network utilization measurements and a stochastic hillclimbing algorithm to produce routing assignments which maximize the ability of the network to support new connection requests View full abstract»

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  • A content-based query language for video databases

    Publication Year: 1996, Page(s):209 - 214
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    Presents CVQL (Content-based Video Query Language) for video databases. Spatial and temporal relationships of content objects are used for the specification of query predicates. Queries of realism are illustrated to show the power of CVQL. Macro definitions are supported to simplify query specification. Index structures and query processing for CVQL are considered, and a prototype video database s... View full abstract»

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  • Burst handling of digital video traffic

    Publication Year: 1996, Page(s):549 - 556
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (716 KB)

    Digital video traffic is inherently bursty for two reasons: the inherent motion of the objects and cameras, and artifacts of the compression algorithms. Because digital video playback requires bandwidth guarantees from the underlying I/O and network systems, the bursty nature of video traffic forces bandwidth reservations to be made at the level of the peak data rates rather than at the average da... View full abstract»

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  • Constant data length retrieval for video servers with variable bit rate streams

    Publication Year: 1996, Page(s):151 - 155
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    We define a novel retrieval algorithm for variable bit rate video streams called GCDL that reads the video data from the disk as constant size data blocks. We formulate for GCDL a deterministic admission control criterion and evaluate its performance. Compared to existing retrieval algorithms, GCDL decreases the buffer requirement and start up latency while admitting the same number of clients View full abstract»

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  • Dynamic LoD for QoS management in the next generation VRML

    Publication Year: 1996, Page(s):24 - 27
    Cited by:  Papers (1)  |  Patents (43)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    A high speed computer network will provide us with new broadband multimedia applications. This paper discusses new functions for the next generation VRML (Virtual Reality Modeling Language) over high speed computer networks. The LoD (Level of Detail) of 3D objects is the most important function for rendering scenes dynamically while managing the QoS (Quality of Service). New requirements for the n... View full abstract»

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  • V-QBE: video database retrieval by means of example motion of objects

    Publication Year: 1996, Page(s):453 - 457
    Cited by:  Papers (8)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (500 KB)

    Multimedia databases consist of text, static images, sound, and/or video. Video data is considered to be the most informative among those types of data. It conveys the meaning of a scene, the existence and/or motion of certain objects, and others. We present a system that retrieves video data by means of the motions of objects observed in video data in the database. That is, a query for a video da... View full abstract»

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  • A dynamic QoS control based on optimistic processor reservation

    Publication Year: 1996, Page(s):95 - 103
    Cited by:  Papers (3)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (968 KB)

    The paper proposes a dynamic QOS control scheme using a processor reservation system. In our scheme, a system allocates processor capacity for each application, then the application increases or decreases the current resource usage by using a feedback mechanism. This scheme allows the application to reserve resources optimistically. This means that a system can allocate all processor resources to ... View full abstract»

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  • A method to fuse two kinds of digital road maps

    Publication Year: 1996, Page(s):497 - 500
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    The acquisition of digital road maps is essential for automobile navigation. Digital road maps are used in Japan by the Digital Road Map Association (DRMA) based on 1/25,000 map. The digital map, however, is unsuitable for town driving. In this situation a more detailed digital road map is requested by the users. To get a detailed digital road map from a paper map is a very expensive operation. We... View full abstract»

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  • A flexible content-based image retrieval system with combined scene description keyword

    Publication Year: 1996, Page(s):201 - 208
    Cited by:  Papers (10)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (904 KB)

    Proposes an image database with a fully automated keyword extraction function. Our approach can extract two different conceptual-level keywords from images. One is the “conceptual keyword”, which is extracted by an image recognition technique using the “state transition model”, which is a hierarchical model. The other keyword is the “scene description keyword”, ... View full abstract»

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  • Genetic block matching algorithm for video coding

    Publication Year: 1996, Page(s):544 - 547
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    Genetic algorithms (GAs) recently have been successfully applied to perform block-based motion estimation. It is shown that the performance of the GA-based motion estimation algorithms nearly approaches that of the full search algorithm (FSA). However, the computational complexity of the existing GA-based algorithms is too high to be used in practice. In this paper, a lightweight genetic search al... View full abstract»

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  • Design and performance tradeoffs in clustered video servers

    Publication Year: 1996, Page(s):144 - 150
    Cited by:  Papers (23)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (732 KB)

    We investigate the suitability of clustered architectures for designing scalable multimedia servers. Specifically, we evaluate the effects of: (i) architectural design of the cluster; (ii) the size of the unit of data interleaving; and (iii) read ahead buffering and scheduling on the real time performance guarantees provided by the server. To analyze the effects of these parameters, we develop an ... View full abstract»

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  • Shape discrimination using integral features

    Publication Year: 1996, Page(s):223 - 228
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    “Integral features” are calculated by summing the local features over all the pixels, where the local features are determined by the state of the neighborhood of each pixel. The states are defined by using a two-dimensional series of mask functions on the polar coordinate system with the logarithmic scale of r-direction. This definition enables the efficient extraction of features from... View full abstract»

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  • Continuous media playback and jitter control

    Publication Year: 1996, Page(s):245 - 252
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    The purpose of this paper is to examine problems associated with display (playback) of live continuous media under varying conditions for an internetwork of workstations running a general purpose operating system such as Unix. Under the assumption that the network cannot guarantee the required bounds on delay and jitter, there is a need to accommodate the delay jitter in the end systems. Various m... View full abstract»

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  • CALVIN: an immersimedia design environment utilizing heterogeneous perspectives

    Publication Year: 1996, Page(s):20 - 23
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    Describes CALVIN (Collaborative Architectural Layout Via Immersive Navigation), an immersive multimedia approach to applying virtual reality in architectural design and collaborative visualization, emphasizing heterogeneous perspectives. These perspectives, including multiple mental models as well as multiple visual viewpoints, allow virtual reality to be applied in the earlier, more creative, pha... View full abstract»

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  • HG-tree: an index structure for multimedia databases

    Publication Year: 1996, Page(s):449 - 452
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    We propose a new index structure called the HG-tree, to support content-based retrieval in multimedia databases. Our goals are twofold: increasing the storage utilization and decreasing the directory coverage of the index tree. The first goal is achieved by absorbing splitting if possible, and when splitting is necessary, converting two nodes to three. This is done by proposing a good ordering on ... View full abstract»

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  • Declarative scheduling for optimally graceful QoS degradation

    Publication Year: 1996, Page(s):86 - 94
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    The paper introduces a mechanism for optimally graceful QoS degradation in distributed real time multimedia services, declarative scheduling. We assume that for each medium of a multimedia service there are a set of implementations, both with differing resource consumption and provided QoS, thus allowing to exploit both resource-resource and resource-QoS tradeoffs. If the amount of available resou... View full abstract»

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