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

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A dynamic QoS control based on optimistic processor reservation 基于乐观处理器预留的动态QoS控制
Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems Pub Date : 1996-06-17 DOI: 10.1109/MMCS.1996.534960
T. Nakajima
{"title":"A dynamic QoS control based on optimistic processor reservation","authors":"T. Nakajima","doi":"10.1109/MMCS.1996.534960","DOIUrl":"https://doi.org/10.1109/MMCS.1996.534960","url":null,"abstract":"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 respective applications every time. Our approach makes it easy to build a continuous media application with a dynamic QOS control scheme, and allocates processor capacity very efficiently without unexpected degradation of a media stream's quality.","PeriodicalId":371043,"journal":{"name":"Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130100206","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
Declarative scheduling for optimally graceful QoS degradation 声明式调度以实现最优的优雅QoS降级
Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems Pub Date : 1996-06-17 DOI: 10.1109/MMCS.1996.534959
M. Moser
{"title":"Declarative scheduling for optimally graceful QoS degradation","authors":"M. Moser","doi":"10.1109/MMCS.1996.534959","DOIUrl":"https://doi.org/10.1109/MMCS.1996.534959","url":null,"abstract":"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 resources changes, the service may locally adapt without changing the provided QoS by scheduling a different set of implementations with different resource requirements. Should this kind of rescheduling not be possible, the service may adapt by scheduling implementations with a lower QoS providable with the resources available. In the latter case declarative scheduling degrades the QoS optimally, i.e. the difference between the provided QoS and the requested QoS is minimal with respect to the user's preferences. The problem, which implementations to select to minimize the QoS degradation is shown to be a so far unconsidered instance of the NP complete knapsack problem. A heuristic for this knapsack problem is proposed and shown to be sufficiently efficient and accurate to implement declarative scheduling.","PeriodicalId":371043,"journal":{"name":"Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116239149","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: 27
A flexible content-based image retrieval system with combined scene description keyword 结合场景描述关键字的基于内容的灵活图像检索系统
Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems Pub Date : 1996-06-17 DOI: 10.1109/MMCS.1996.534975
Atsushi Ono, Masashi Amano, Mitsuhiro Hakaridani, T. Satou, M. Sakauchi
{"title":"A flexible content-based image retrieval system with combined scene description keyword","authors":"Atsushi Ono, Masashi Amano, Mitsuhiro Hakaridani, T. Satou, M. Sakauchi","doi":"10.1109/MMCS.1996.534975","DOIUrl":"https://doi.org/10.1109/MMCS.1996.534975","url":null,"abstract":"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\", which is extracted by primitive parameters of color segments. We also propose the introduction of a \"transition probability\" to raise the retrieval accuracy (precision). Moreover, we evaluate the retrieval accuracy of this image database through a retrieval experiment using about 170 scenery images.","PeriodicalId":371043,"journal":{"name":"Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131376060","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: 35
Design of multimedia database and a query language for video image data 多媒体数据库及视频图像数据查询语言的设计
Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems Pub Date : 1996-06-17 DOI: 10.1109/MMCS.1996.535895
H. Arisawa, T. Tomii, Kiril Salev
{"title":"Design of multimedia database and a query language for video image data","authors":"H. Arisawa, T. Tomii, Kiril Salev","doi":"10.1109/MMCS.1996.535895","DOIUrl":"https://doi.org/10.1109/MMCS.1996.535895","url":null,"abstract":"This paper presents a methodology of database design and a query language for multimedia data, especially for video image data. It focuses on how to specify/identify \"objects\" in video frames, and the way of representing and storing them in a database. The result of the database query is a short \"movie\", in which retrieved objects are always emphasized by spotlighting or highlighting.","PeriodicalId":371043,"journal":{"name":"Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115050847","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: 14
An open framework for integrating widely distributed hypermedia resources 一个用于集成广泛分布的超媒体资源的开放框架
Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems Pub Date : 1996-06-17 DOI: 10.1109/MMCS.1996.534999
S. Goose, J. Dale, G. Hill, D. D. Roure, W. Hall
{"title":"An open framework for integrating widely distributed hypermedia resources","authors":"S. Goose, J. Dale, G. Hill, D. D. Roure, W. Hall","doi":"10.1109/MMCS.1996.534999","DOIUrl":"https://doi.org/10.1109/MMCS.1996.534999","url":null,"abstract":"The success of the WWW has served as an illustration of how hypermedia can enhance access to large repositories of distributed information. However, current distributed hypermedia systems offer limited hypermedia functionality which cannot easily be augmented or simply applied to existing applications and data formats. This paper describes a model and prototype, based on the Microcosm system, of a reflexive and extensible distributed hypermedia framework for managing hypermedia application development, sharing and re-use.","PeriodicalId":371043,"journal":{"name":"Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115193577","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: 25
HG-tree: an index structure for multimedia databases HG-tree:多媒体数据库的索引结构
Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems Pub Date : 1996-06-17 DOI: 10.1109/MMCS.1996.535012
Guang-Ho Cha, C. Chung
{"title":"HG-tree: an index structure for multimedia databases","authors":"Guang-Ho Cha, C. Chung","doi":"10.1109/MMCS.1996.535012","DOIUrl":"https://doi.org/10.1109/MMCS.1996.535012","url":null,"abstract":"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 the directory nodes. The second goal is achieved by representing the directory regions compactly. We note that there is a trade-off between the two design goals, but the HG-tree is so flexible that it can control the trade-off. We present the design of our index tree and associated algorithms. In addition, we report the results of a series of tests, comparing the proposed index tree with the buddy-tree, which is one of the most successful access methods for a multidimensional space. The results show the superiority of our method.","PeriodicalId":371043,"journal":{"name":"Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems","volume":"759 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123877053","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: 8
Content-based structuring of video information 基于内容的视频信息结构
Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems Pub Date : 1996-06-17 DOI: 10.1109/MMCS.1996.534995
M. Shibata, Yeun-Bae Kim
{"title":"Content-based structuring of video information","authors":"M. Shibata, Yeun-Bae Kim","doi":"10.1109/MMCS.1996.534995","DOIUrl":"https://doi.org/10.1109/MMCS.1996.534995","url":null,"abstract":"For flexible handling of video images, it is important to structure video information according to its content. We focus on linguistic descriptions of such video contents that can be extracted during the process of video production. This paper proposes a component-based scene description model for computerizing linguistic descriptions written by the directors and a method for extracting a content-based hierarchical structure for video sequences based on this model.","PeriodicalId":371043,"journal":{"name":"Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems","volume":"321 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115866121","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: 9
A probabilistic multi-cycle model for serving continuous streams from disks 提供磁盘连续流的概率多周期模型
Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems Pub Date : 1996-06-17 DOI: 10.1109/MMCS.1996.535030
Freddy Deppner, B. Gennart, R. Hersch
{"title":"A probabilistic multi-cycle model for serving continuous streams from disks","authors":"Freddy Deppner, B. Gennart, R. Hersch","doi":"10.1109/MMCS.1996.535030","DOIUrl":"https://doi.org/10.1109/MMCS.1996.535030","url":null,"abstract":"Existing models for serving continuous streams from disks are generally based on worst-case deterministic head displacement times and on a round-robin strand service approach consisting of serving all strands once per round. We propose an alternative approach, where the head displacement time is described as a random variable with known probability density and where strands are served in a round-robin manner consecutively several times per service period. By establishing the frame loss rate separately in each cycle and for each of the strand's display deadlines, we compute the mean number of lost frames per second for a given configuration. By serving strands consecutively several times in consecutive cycles, we show that for a given frame loss rate, less buffer space is needed than in the conventional single round approach.","PeriodicalId":371043,"journal":{"name":"Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124740006","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
Constant data length retrieval for video servers with variable bit rate streams 可变比特率流视频服务器的恒定数据长度检索
Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems Pub Date : 1996-06-17 DOI: 10.1109/MMCS.1996.534967
E. Biersack, Frédéric Thiesse, C. Bernhardt
{"title":"Constant data length retrieval for video servers with variable bit rate streams","authors":"E. Biersack, Frédéric Thiesse, C. Bernhardt","doi":"10.1109/MMCS.1996.534967","DOIUrl":"https://doi.org/10.1109/MMCS.1996.534967","url":null,"abstract":"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.","PeriodicalId":371043,"journal":{"name":"Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127252541","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: 30
Design and performance tradeoffs in clustered video servers 集群视频服务器中的设计和性能权衡
Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems Pub Date : 1996-06-17 DOI: 10.1109/MMCS.1996.534966
Renu Tewari, R. Mukherjee, D. Dias, H. Vin
{"title":"Design and performance tradeoffs in clustered video servers","authors":"Renu Tewari, R. Mukherjee, D. Dias, H. Vin","doi":"10.1109/MMCS.1996.534966","DOIUrl":"https://doi.org/10.1109/MMCS.1996.534966","url":null,"abstract":"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 analytical model of clustered multimedia servers, and then validate it through extensive simulations, The results of our analysis have formed the basis of our prototype implementation based on an RS/6000 Scalable Parallel (SP) machine. We briefly describe the prototype and discuss some implementation details.","PeriodicalId":371043,"journal":{"name":"Proceedings of the Third IEEE International Conference on Multimedia Computing and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116876528","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: 75
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