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MULTIMEDIA '99最新文献

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An efficient video segmentation scheme for MPEG video stream using macroblock information 利用宏块信息对MPEG视频流进行高效的视频分割
MULTIMEDIA '99 Pub Date : 1999-10-30 DOI: 10.1145/319463.320047
J. Nang, Seungwook Hong, Young-Kyu Ihm
{"title":"An efficient video segmentation scheme for MPEG video stream using macroblock information","authors":"J. Nang, Seungwook Hong, Young-Kyu Ihm","doi":"10.1145/319463.320047","DOIUrl":"https://doi.org/10.1145/319463.320047","url":null,"abstract":"In this paper we propose and implement an efficient scheme for automatically detecting the abrupt shot changes in a video stream compressed in MPEG video format. In the proposed scheme, the type of each macroblock in a B-frame is compared with the type of corresponding macroblock (i.e. the macroblock in the same position) of the previous B-frame. The results of comparisons are accumulated and compared to a threshold in order to decide if a shot change occurs. Since the proposed scheme uses not only information about the type of each macroblock but also its location, it can provide more robust detection capability. Moreover, since the proposed scheme can also detect shot changes in both I- and P-frames based on the information in B-frame, it can detect a changing point more precisely, that is, the granularity of detection is the frame in the proposed scheme.","PeriodicalId":265329,"journal":{"name":"MULTIMEDIA '99","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114660498","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: 29
A synchronization model for recorded presentations and its relevance for information retrieval 记录演示的同步模型及其与信息检索的相关性
MULTIMEDIA '99 Pub Date : 1999-10-30 DOI: 10.1145/319463.319639
Wolfgang Hürst, R. Müller
{"title":"A synchronization model for recorded presentations and its relevance for information retrieval","authors":"Wolfgang Hürst, R. Müller","doi":"10.1145/319463.319639","DOIUrl":"https://doi.org/10.1145/319463.319639","url":null,"abstract":"In order to improve the acceptance of recorded presentations, we introduce a new open document type covering a wide range of different media classes typically appearing in this scenario. Instances of this document type can be replayed using our time-based synchronization model. Random access in combination with the realized stream/media-layered synchronization mechanism results in essential features such as Random Visible Scrolling and Unrestricted Cross-Referencing. The proposed synchronization model has been implemented and is routinely used by a variety of institutions. Furthermore we show how the properties of the considered documents and the functionality of the proposed synchronization model affect cross-modal retrieval techniques.","PeriodicalId":265329,"journal":{"name":"MULTIMEDIA '99","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126959911","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: 36
Improving collaborative filtering with multimedia indexing techniques to create user-adapting Web sites 使用多媒体索引技术改进协同过滤，以创建适合用户的Web站点
MULTIMEDIA '99 Pub Date : 1999-10-30 DOI: 10.1145/319463.319467
Arnd Kohrs, B. Mérialdo
{"title":"Improving collaborative filtering with multimedia indexing techniques to create user-adapting Web sites","authors":"Arnd Kohrs, B. Mérialdo","doi":"10.1145/319463.319467","DOIUrl":"https://doi.org/10.1145/319463.319467","url":null,"abstract":"The Internet is evolving from a static collection of hypertext, to a rich assortment of dynamic services and products targeted at millions of Internet users. For most sites it is a crucial matter to keep a close tie between the users and the site.\u0000More and more Web sites build close relationships with their users by adapting to their needs and therefore providing a personal experience. One aspect of personalization is the recommendation and presentation of information and products so that users can access the site more efficiently. However, powerful filtering technology is required in order to identify relevant items for each user.\u0000In this paper we describe how collaborative filtering and content-based filtering can be combined to provide better performance for filtering information. Filtering techniques of various nature are integrated in a weighed mix to achieve more robust results and to profit from automatic multimedia indexing technologies. The combined approach is evaluated in a prototype user-adapting Web site, the Active WebMuseum.","PeriodicalId":265329,"journal":{"name":"MULTIMEDIA '99","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114940306","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
Immersive teleconferencing: a new algorithm to generate seamless panoramic video imagery 沉浸式电话会议:生成无缝全景视频图像的新算法
MULTIMEDIA '99 Pub Date : 1999-10-30 DOI: 10.1145/319463.319485
A. Majumder, W. Seales, M. Gopi, H. Fuchs
{"title":"Immersive teleconferencing: a new algorithm to generate seamless panoramic video imagery","authors":"A. Majumder, W. Seales, M. Gopi, H. Fuchs","doi":"10.1145/319463.319485","DOIUrl":"https://doi.org/10.1145/319463.319485","url":null,"abstract":"This paper presents a new algorithm for immersive teleconferencing, which addresses the problem of registering and blending multiple images together to create a single seamless panorama. In the immersive teleconference paradigm, one frame of the teleconference is a panorama that is constructed from a compound-image sensing device. These frames are rendered at the remote site on a projection surface that surrounds the user, creating an immersive feeling of presence and participation in the teleconference. Our algorithm efficiently creates panoramic frames for a teleconference session that are both geometrically registered and intensity blended. We demonstrate a prototype that is able to capture images from a compound-image sensor, register them into a seamless panoramic frame, and render those panoramic frames on a projection surface at 30 frames per second.","PeriodicalId":265329,"journal":{"name":"MULTIMEDIA '99","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122231321","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: 58
Combined path and server selection in dynamic multimedia environments 动态多媒体环境中路径和服务器的组合选择
MULTIMEDIA '99 Pub Date : 1999-10-30 DOI: 10.1145/319463.319687
Zhenghua Fu, N. Venkatasubramanian
{"title":"Combined path and server selection in dynamic multimedia environments","authors":"Zhenghua Fu, N. Venkatasubramanian","doi":"10.1145/319463.319687","DOIUrl":"https://doi.org/10.1145/319463.319687","url":null,"abstract":"The evolving global information infrastructure consists of a widearea networking backbone that provides connectivity among service providers and clients requesting multimedia services via different applications. As this infrastructure scales, service providers replicate data and resources on the network to serve more concurrent clients. Adaptive and intelligent scheduling techniques are required to increase the utilization of their resources and handle an increasing number of requests. Scheduling for multimedia applications must guarantee desired Quality-of-Service (QoS) from both the network path and the server. Furthermore, with the increasing amount of mobile clients and highly dynamic network topologies, optimizing resource utilization becomes complicated. In a highly dynamic and ad-hoc environment where clients are mobile, load sensitive routing and scheduling techniques must be able to tolerate some information imprecision. The information collection and scheduling processes must cooperate with each other, they cannot be viewed as independent components in the QoS provisioning framework. This paper deals with a framework in which scheduling decisions are based on path as well as server qualities.","PeriodicalId":265329,"journal":{"name":"MULTIMEDIA '99","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117101621","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: 21
Minimum-drift digital video down-conversion 最小漂移数字视频下变频
MULTIMEDIA '99 Pub Date : 1999-10-30 DOI: 10.1145/319463.319625
O. Al-Shaykh, Homer H. Chen
{"title":"Minimum-drift digital video down-conversion","authors":"O. Al-Shaykh, Homer H. Chen","doi":"10.1145/319463.319625","DOIUrl":"https://doi.org/10.1145/319463.319625","url":null,"abstract":"This paper presents a new technique for decoding a full-resolution video bitstream at low memory cost and displaying the signal at a lower resolution. Existing techniques solve the problem by storing the down-converted blocks into memory instead of the full-resolution blocks. While the memory is reduced, these techniques introduce drift errors because the decoder does not have the same pixels as the encoder in performing motion-compensated prediction. The approach proposed here alleviates the problem by tracking the drift at the decoder. It improves the video quality without any increase in decoder complexity. The effectiveness of the approach is evaluated using both objective and subjective tests. This minimum-drift approach is very simple to implement and can also be applied for memory reduction of a full resolution HDTV decoder.","PeriodicalId":265329,"journal":{"name":"MULTIMEDIA '99","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114730040","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
An efficient bandwidth-sharing technique for true video on demand systems 一种有效的视频点播系统带宽共享技术
MULTIMEDIA '99 Pub Date : 1999-10-30 DOI: 10.1145/319463.319607
Ying Cai, K. Hua
{"title":"An efficient bandwidth-sharing technique for true video on demand systems","authors":"Ying Cai, K. Hua","doi":"10.1145/319463.319607","DOIUrl":"https://doi.org/10.1145/319463.319607","url":null,"abstract":"Patching is a cost efficient channel-sharing technique for video-on-demand systems. However, its performance is limited due to the fact that a video stream cannot be shared unless it delivers the video in its entirety. As a result, larger and larger patches are required to serve new requests as the temporal distance increases. To avoid the overwhelming accumulation of patching cost, the entire video must be delivered frequently. In this paper, we address this problem by introducing a new technique called Transition Patching. Our performance study shows that the new scheme outperforms the existing approach under all scenarios. In particular, the performance gain is more significant when the request rate is higher. We note that such improvement is achieved without extra download bandwidth required at the client site. The implementation cost, therefore, is the same as the original Patching scheme.","PeriodicalId":265329,"journal":{"name":"MULTIMEDIA '99","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133940372","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: 71
Musical content-based retrieval: an overview of the Melodiscov approach and system 基于音乐内容的检索:melodiscover方法和系统的概述
MULTIMEDIA '99 Pub Date : 1999-10-30 DOI: 10.1145/319463.319473
Pierre-Yves Rolland, G. Raskinis, J. Ganascia
{"title":"Musical content-based retrieval: an overview of the Melodiscov approach and system","authors":"Pierre-Yves Rolland, G. Raskinis, J. Ganascia","doi":"10.1145/319463.319473","DOIUrl":"https://doi.org/10.1145/319463.319473","url":null,"abstract":"","PeriodicalId":265329,"journal":{"name":"MULTIMEDIA '99","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115940154","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: 51
A multicast scheme for parallel software-only video effects processing 并行单软件视频效果处理的组播方案
MULTIMEDIA '99 Pub Date : 1999-10-30 DOI: 10.1145/319463.319677
Ketan Mayer-Patel, L. Rowe
{"title":"A multicast scheme for parallel software-only video effects processing","authors":"Ketan Mayer-Patel, L. Rowe","doi":"10.1145/319463.319677","DOIUrl":"https://doi.org/10.1145/319463.319677","url":null,"abstract":"We have developed a parallel software-only processing system for creating real-time video effects such as titling and compositing (e.g., picture-in-picture) using compressed Internet video sources. The system organizes processors into a hierarchy of levels. Processes at each level of the hierarchy can exploit different types of parallelism and coordinate the actions of lower levels. To control the effect, control messages must be distributed to processors in the hierarchy while preserving the independence of each level. This requires a control mechanism that supports efficient delivery of messages to groups of processors, tunable reliability semantics, and recoverable state information. We describe a mechanism that meets these requirements that uses IP-Multicast, the Scalable Reliable Multicast protocol, and the Scalable Naming and Announcement Protocol. We also describe an optimization that provides a flexible framework for linking the control of different aspects of one or more related video effects.","PeriodicalId":265329,"journal":{"name":"MULTIMEDIA '99","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117171395","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: 5
Multimodal people ID for a multimedia meeting browser 多媒体会议浏览器的多模式人员ID
MULTIMEDIA '99 Pub Date : 1999-10-30 DOI: 10.1145/319463.319484
Jie Yang, Xiaojin Zhu, R. Gross, J. Kominek, Yue Pan, A. Waibel
{"title":"Multimodal people ID for a multimedia meeting browser","authors":"Jie Yang, Xiaojin Zhu, R. Gross, J. Kominek, Yue Pan, A. Waibel","doi":"10.1145/319463.319484","DOIUrl":"https://doi.org/10.1145/319463.319484","url":null,"abstract":"A meeting browser is a system that allows users to review a multimedia meeting record from a variety of indexing methods. Identification of meeting participants is essential for creating such a multimedia meeting record. Moreover, knowing who is speaking can enhance the performance of speech recognition and indexing meeting transcription. In this paper, we present an approach that identifies meeting participants by fusing multimodal inputs. We use face ID, speaker ID, color appearance ID, and sound source directional ID to identify and track meeting. After describing the different modules in detail, we will discuss a framework for combining the information sources. Integration of the multimodal people ID into the multimedia meeting browser is in its preliminary stage.","PeriodicalId":265329,"journal":{"name":"MULTIMEDIA '99","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129688687","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: 52
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