{"title":"Realising Real Time Multimedia Groupware on the Web","authors":"C. Allison, Martin Bateman, A. Ruddle","doi":"10.2312/EGMM/egmm01/043-054","DOIUrl":"https://doi.org/10.2312/EGMM/egmm01/043-054","url":null,"abstract":"Real-time audio and video conferencing has not yet been satisfactorily integrated into web-based groupware environments. Conferencing tools are at best only loosely linked to other parts of a shared working environment. This is mainly due to the special Quality of Service (QoS) requirements that these types of resources demand. This paper describes an approach to overcoming this problem by integrating the management of video and audio conferences into the resource allocation mechanism of an existing web-based groupware framework. The issue of adaptation is discussed and a means of initialising multimedia session parameters based on predicted QoS is described. In addition to linking audio and video media rendering quality to the predicted network QoS, the use of models to reduce bandwidth is also explored, replacing video content with control data. Component technologies utilised include the TAGS groupware framework, the Java Media Framework, a Conference Control Architecture and VRML-based avatars that can intermix with real actors.","PeriodicalId":268090,"journal":{"name":"Eurographics Multimedia Workshop","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114605180","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}
{"title":"Abstractions in Multimedia Authoring: The MAVA Approach","authors":"J. Hauser, Jing Tian","doi":"10.2312/EGMM/egmm01/055-064","DOIUrl":"https://doi.org/10.2312/EGMM/egmm01/055-064","url":null,"abstract":"The support of abstractions in authoring systems increases the efficiency of the specification of multimedia documents. Authoring based on a very low abstraction, for example script programming, is very complex and time consuming. In addition, authoring systems supporting a high abstraction are so far restricted to one specific application area. This paper presents an extensible approach that supports abstractions in different application areas (such as computer-based training or a travel guide).In this approach a meta document model and the corresponding presentation and authoring system are developed. During conception of the authoring system, different concepts (e.g. templates or application specific views) have been realized to introduce further abstractions.","PeriodicalId":268090,"journal":{"name":"Eurographics Multimedia Workshop","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127785362","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}
{"title":"EcoVasco, an Ecological Multimedia Adventure","authors":"P. Lopes, M. V. Moreira, Miguel Lapa Duarte","doi":"10.1007/978-3-7091-6771-7_20","DOIUrl":"https://doi.org/10.1007/978-3-7091-6771-7_20","url":null,"abstract":"","PeriodicalId":268090,"journal":{"name":"Eurographics Multimedia Workshop","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122276599","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}
{"title":"A Server-based Interactive Remote Walkthrough","authors":"D. Cohen-Or, Yuval Noimark, T. Zvi","doi":"10.2312/EGMM/egmm01/075-086","DOIUrl":"https://doi.org/10.2312/EGMM/egmm01/075-086","url":null,"abstract":"This paper presents a server-based remote walkthrough system. The client is assumed to be a thin client, like a handset or a mobile device, with no strong processor but with some embedded video chip. The server holds the large environment, generates the frames, encodes and transmits them to the client. The encoded frames are transmitted as a video stream to the client, which then decodes the stream and displays it. We show how the computer generated frames can be efficiently encoded using layering techniques to yield a lighter stream, which enables its transmission over narrow bandwidth channels and minimizes the communication latency. To enable the interactivity of the system, the rendering engine generates the frames in real-time according to the client input, and feeds the frames to an accelerated video encoder based on the available optical flow.","PeriodicalId":268090,"journal":{"name":"Eurographics Multimedia Workshop","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126718691","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}
{"title":"Screen Space: Depiction and the Space of Interactive Media","authors":"S. B. Davis, H. Jones","doi":"10.2312/EGMM/egmm01/165-176","DOIUrl":"https://doi.org/10.2312/EGMM/egmm01/165-176","url":null,"abstract":"The spatial properties of digital interactive multimedia are analysed and contrasted with those of pictures, and of narrative feature films and factual television. These media have developed distinctive spatial methods and questions arise concerning the transferability of such methods to other, interactive, forms. A taxonomy is proposed which reflects existing practice in digital interactive media and indicates promising lines of enquiry for the future.","PeriodicalId":268090,"journal":{"name":"Eurographics Multimedia Workshop","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123144845","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}
G. Miller, S. Rubin, Philip M. Hubbard, Jenny Dana, J. Woodfill
{"title":"Head-Tracked Light Field Movies: A New Multimedia Data Type","authors":"G. Miller, S. Rubin, Philip M. Hubbard, Jenny Dana, J. Woodfill","doi":"10.1007/978-3-7091-6771-7_16","DOIUrl":"https://doi.org/10.1007/978-3-7091-6771-7_16","url":null,"abstract":"","PeriodicalId":268090,"journal":{"name":"Eurographics Multimedia Workshop","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116026552","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}
{"title":"Replay Detection in Sports Video Sequences","authors":"L. Gu, Don Bone, G. Reynolds","doi":"10.1007/978-3-7091-6771-7_2","DOIUrl":"https://doi.org/10.1007/978-3-7091-6771-7_2","url":null,"abstract":"","PeriodicalId":268090,"journal":{"name":"Eurographics Multimedia Workshop","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122776899","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}
{"title":"SPATIAL VIDEO Exploring Space Using Multiple Digital Videos","authors":"Edmundo Nobre, Antonio Camara","doi":"10.2312/EGMM/egmm01/177-188","DOIUrl":"https://doi.org/10.2312/EGMM/egmm01/177-188","url":null,"abstract":"This paper presents and discusses a new approach to collect, organize and explore multiple digital videos on a spatial basis. We present a methodology based on direct video frame indexation to the real space represented in the video images. This approach facilitates the exploration of space through multiple videos. An illustrative application of this technology for multimedia spatial information systems is provided. Future developments related to the three-dimensional explorations of space using digital video are also discussed.","PeriodicalId":268090,"journal":{"name":"Eurographics Multimedia Workshop","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128044683","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}
{"title":"Sobol Partial Distortion Algorithm for Fast Full Search in Block Motion Estimation","authors":"D. Quaglia, B. Montrucchio","doi":"10.2312/EGMM/egmm01/087-094","DOIUrl":"https://doi.org/10.2312/EGMM/egmm01/087-094","url":null,"abstract":"Block motion estimation is a cpu intensive task for video encoding. Many fast algorithms have been developed to solve this problem, trying to improve both block searching and block matching. Some of them reduce the image quality compared to the full search method in order to improve performance. The algorithm presented in this paper, called Sobol Partial Distortion (SPD) algorithm, is a full search (lossless), fast matching, block motion estimation algorithm, applying partial distortion elimination. It uses a new matching strategy to quickly compute distortion and reduce block matching computation. Image-dependent computation is not required, since the matching strategy does not depend on the frame sequence. The proposed algorithm performs well in terms of computational speedup in comparison with other existing full search algorithms.","PeriodicalId":268090,"journal":{"name":"Eurographics Multimedia Workshop","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122658280","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}
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