发布求助
文献互助 智能选刊 最新文献

MULTIMEDIA '93最新文献

筛选
英文 中文
A performance analysis of the IBM subsystem control block architecture in a video conferencing environment IBM子系统控制块体系结构在视频会议环境中的性能分析
MULTIMEDIA '93 Pub Date : 1993-09-01 DOI: 10.1145/166266.168413
K. Huynh, T. Khoshgoftaar
{"title":"A performance analysis of the IBM subsystem control block architecture in a video conferencing environment","authors":"K. Huynh, T. Khoshgoftaar","doi":"10.1145/166266.168413","DOIUrl":"https://doi.org/10.1145/166266.168413","url":null,"abstract":"With the proliferation of new intelligent adapters, advanced bus architectures, and powerful microprocessors, the latest personal computers need a new architecture to coordinate the transfers of command and control information, data, and status between their system components in the most efficient manner. To this end, IBM has defined the Subsystem Control Block (SCB) architecture. In this paper, we would like to present our performance analysis of the SCB architecture in one of the most sophisticated multimedia applications today, the video conferencing environment. Our analysis demonstrates how effective the SCB architecture is in handling multiple video streams and file transfers concurrently in a typical video conferencing system based on personal computers.","PeriodicalId":412458,"journal":{"name":"MULTIMEDIA '93","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127463279","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: 4
Synchronization in the MAEstro multimedia authoring environment 在MAEstro多媒体创作环境中的同步
MULTIMEDIA '93 Pub Date : 1993-09-01 DOI: 10.1145/166266.168417
G. Drapeau
{"title":"Synchronization in the MAEstro multimedia authoring environment","authors":"G. Drapeau","doi":"10.1145/166266.168417","DOIUrl":"https://doi.org/10.1145/166266.168417","url":null,"abstract":"MAEstro is a distributed, multimedia authoring environment designed to simplify the process of creating multimedia documents [5]. The environment consists of a suite of applications to manipulate various media, or sources of information. A messaging system, based on Sun remote procedure calls, is used to control playback of multimedia documents. This distributed nature of multimedia authorship and playback poses unique problems in the area of synchronization, but the MAEstro architecture also allows for a simple and relatively effective solution. The solution is a combination of policy to be followed by application programmers, and oneway (non-blocking) RPC calls during playback of multimedia documents [2]. The MAEstro solution to the synchronization problem works with any combination of media, if the author of a document is willing to live with coarse-grained synchronization (on the order of one second). Thus, MAEstro synchronization is not adequate for applications such as dubbing voice with video where the two media come from different sources, but for most applications, MAEstro synchronization is acceptable. This paper discusses the techniques used in the MAEstro environment to achieve synchronization.","PeriodicalId":412458,"journal":{"name":"MULTIMEDIA '93","volume":"195 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123007533","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: 40
Toolkit for shared hypermedia on a distributed object oriented architecture 用于分布式面向对象架构上的共享超媒体的工具包
MULTIMEDIA '93 Pub Date : 1993-09-01 DOI: 10.1145/166266.166286
R. Trehan, N. Sawashima, Koji Yamaguchi, Koichi Hasebe
{"title":"Toolkit for shared hypermedia on a distributed object oriented architecture","authors":"R. Trehan, N. Sawashima, Koji Yamaguchi, Koichi Hasebe","doi":"10.1145/166266.166286","DOIUrl":"https://doi.org/10.1145/166266.166286","url":null,"abstract":"We present a toolkit and architecture for supporting networked shared (multi-user) hypermedia applications. The toolkit supports a rich set of media types: text, graphics, pictures, live and pre-recorded sound, and live and pre-recorded video. Hypermedia links can be anchored to any media type and refer to nodes which contain media items. Nodes provide for abstractions such as pages, cards and general information networks. Media information can be accessed and changed by several users. The toolkit is realised as a class library on a distributed object oriented language based on C. The concurrent and distributed features of the underlying architecture provide for multi-users. Issues of sharing, version management and access control are addressed by considering database extensions to the object oriented architecture. Support for networking of continuous media streams is provided by extensions to the underlying runtime system. The toolkit has been used to develop and support conference and groupware applications.","PeriodicalId":412458,"journal":{"name":"MULTIMEDIA '93","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125239398","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: 4
Open architecture multimedia documents 开放架构多媒体文档
MULTIMEDIA '93 Pub Date : 1993-09-01 DOI: 10.1145/166266.166282
B. Gaines, M. Shaw
{"title":"Open architecture multimedia documents","authors":"B. Gaines, M. Shaw","doi":"10.1145/166266.166282","DOIUrl":"https://doi.org/10.1145/166266.166282","url":null,"abstract":"An open architecture multimedia document publication system is described which integrates a number of different representation technologies to provide a medium offering a wide spectrum of usage, from emulation of current paper publication, through electronic document delivery, multimedia inclusion of video and sound, structured hypermedia linkage, and formal knowledge representation supporting simulation and inference. The research is targeted on exploring new forms of scholarly communication, and the publication system supports collaborative document development, the authentication of disseminated material, and the citation, annotation and reuse of such material. The document publication system provides a rich word processing and page makeup environment with all the facilities normally expected, and adds multimedia, hypermedia and computational facilities incrementally and naturally, with careful attention to the usability of the human-computer interface. The result is an interactive document in which knowledge is represented in a variety of ways, some targeted on human interaction, some targeted on computational analysis, simulation and inference, and such that the document can be printed as a conventional paper or book losing the dynamic aspects of the material but retaining the visual representation.","PeriodicalId":412458,"journal":{"name":"MULTIMEDIA '93","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122235157","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: 32
Algorithms and performance evaluation of the Xphone multimedia communication system Xphone多媒体通信系统的算法与性能评价
MULTIMEDIA '93 Pub Date : 1993-09-01 DOI: 10.1145/166266.168410
A. Eleftheriadis, S. Pejhan, D. Anastassiou
{"title":"Algorithms and performance evaluation of the Xphone multimedia communication system","authors":"A. Eleftheriadis, S. Pejhan, D. Anastassiou","doi":"10.1145/166266.168410","DOIUrl":"https://doi.org/10.1145/166266.168410","url":null,"abstract":"We describe and evaluate the performanceof the algorithms used in Columbia University’s “Xphone” multimedia communication system. The system assumes a “best-effort” operating system and network, and provides synchronized video/audio acquisition/playback (locally or across a network) with minimized and bounded end-to-end delay. Synchronization is achieved using an algorithm based on timestamps and device state information. The effects of jitter (delay variation) are mitigated using silence detection; the end-to-end delay is kept bounded using a restart mechanism. Finally, for live video sources, we describe a source bit-rate adaptation algorithm that maximizes the video image quality to the available network bandwidth and video display window size. Keywords—Multimedia communication systems, media synchronization, source rate control, application development systems.","PeriodicalId":412458,"journal":{"name":"MULTIMEDIA '93","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130380542","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: 37
A synchronization and communication model for distributed multimedia objects 分布式多媒体对象的同步和通信模型
MULTIMEDIA '93 Pub Date : 1993-09-01 DOI: 10.1145/166266.166283
Naveed U. Qazi, Miae Woo, A. Ghafoor
{"title":"A synchronization and communication model for distributed multimedia objects","authors":"Naveed U. Qazi, Miae Woo, A. Ghafoor","doi":"10.1145/166266.166283","DOIUrl":"https://doi.org/10.1145/166266.166283","url":null,"abstract":"As the demand for multimedia information systems increases and network technology provides the capability to handle multimedia data, effective communication and synchronization mechanisms are needed in a distributed environment to realize the successful retrieval, composition and presentation of multimedia objects. In this paper, we propose a specification model for the communication and synchronization of multimedia objects in a distributed environment. This model specifies all the necessary functions for the communication and presentation of multimedia objects. We also implement several synchronization schemes in our model that provide mechanisms to handle synchronization anomalies during the presentation of multimedia objects.","PeriodicalId":412458,"journal":{"name":"MULTIMEDIA '93","volume":"228 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116188653","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: 89
Multi-resolution video representation for parallel disk arrays 并行磁盘阵列的多分辨率视频表示
MULTIMEDIA '93 Pub Date : 1993-09-01 DOI: 10.1145/166266.168438
T. Chiueh, R. Katz
{"title":"Multi-resolution video representation for parallel disk arrays","authors":"T. Chiueh, R. Katz","doi":"10.1145/166266.168438","DOIUrl":"https://doi.org/10.1145/166266.168438","url":null,"abstract":"In a multimedia storage system video is probably the most demanding data type because of its large data volume and strict timing requirements. Image compression and parallel I/O architecture have been proposed in the literature to address the storage problem associated with digital video. This paper takes a systems approach by integrating video compression with data layout algorithms on parallel disk arrays to support high-quality video rendition. Specifically, we propose to use a multiresolution video representation scheme based on Gaussian and Laplacian Pyramids, which allows the storage system to satisfy video access requests by transferring only the minimum amount of data that is absolutely necessary. We also develope a new array storage layout algorithm for the Laplacian pyramid coding scheme to support jitter-free video rendering at the level of disk subsystems. We report on the results of a simulation study on the effectiveness of the proposed integrated design. The result shows that under the assumed workload the multi-resolution scheme is significantly better than the conventional representation in terms of the I/O rate, average waiting time, and average physical data bandwidth requirement. Specifically, the Laplacian Pyramid representation costs three to four times less data traffic, , reduces the average waiting time to one-eighth of that of the conventional approach, and achieves a five to ten times better average I/O rate.","PeriodicalId":412458,"journal":{"name":"MULTIMEDIA '93","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123486611","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: 54
Multimedia CD-Rom conference publishing (panel session) 多媒体唯读光碟会议出版(小组讨论)
MULTIMEDIA '93 Pub Date : 1993-09-01 DOI: 10.1145/166266.168462
R. Rada
{"title":"Multimedia CD-Rom conference publishing (panel session)","authors":"R. Rada","doi":"10.1145/166266.168462","DOIUrl":"https://doi.org/10.1145/166266.168462","url":null,"abstract":"","PeriodicalId":412458,"journal":{"name":"MULTIMEDIA '93","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120971725","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: 1
Salient video stills: content and context preserved 突出的视频剧照:内容和背景保存
MULTIMEDIA '93 Pub Date : 1993-09-01 DOI: 10.1145/166266.166270
Laura Teodosio, W. Bender
{"title":"Salient video stills: content and context preserved","authors":"Laura Teodosio, W. Bender","doi":"10.1145/166266.166270","DOIUrl":"https://doi.org/10.1145/166266.166270","url":null,"abstract":"A new class of images called salient stills is demonstrated and a software development platform for their creation is discussed. These images do not represent one discrete moment of time, as do a photograph or single video frame. Rather, one image reflects the aggregate of the temporal changes that occur in a moving image sequence with the salient features preserved. By the application of an affine transformation and non-linear temporal processing, multiple frames of an image sequence, which may include variations in focal-length or field-of-view, are combined to create a single still image. The still image may have multi-resolution patches, a larger field-of-view, or higher overall resolution than any individual frame in the original image sequence. It may also contain selected salient objects from any one of the sequence of video frames. The still can be created automatically or with user intervention. A by-product of the salient still process is a structured representation of moving image data.","PeriodicalId":412458,"journal":{"name":"MULTIMEDIA '93","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130392596","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: 231
A multimedia component kit: experiences with visual composition of applications 多媒体组件套件:应用程序可视化组合的经验
MULTIMEDIA '93 Pub Date : 1993-09-01 DOI: 10.1145/166266.168406
Vicki de Mey, S. Gibbs
{"title":"A multimedia component kit: experiences with visual composition of applications","authors":"Vicki de Mey, S. Gibbs","doi":"10.1145/166266.168406","DOIUrl":"https://doi.org/10.1145/166266.168406","url":null,"abstract":"In this paper we present an object-oriented perspective to multimedia and discuss an approach for prototyping distributed multimedia applications. We describe the implementation of a component kit, an example application, called a virtual museum, and a visual composition tool. The tool allows interactive construction of multimedia applications from generic software components by direct manipulation and graphical editing. keywords: multimedia, visual composition, active objects, component-oriented software development.","PeriodicalId":412458,"journal":{"name":"MULTIMEDIA '93","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129292556","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
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信