Co-operative Multimedia on Heterogeneous Platforms

Tritsch, Bernhard; Hornung, Christoph

doi:10.1007/978-3-642-85046-2_5

Cited by 2 publications

(4 citation statements)

References 2 publications

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“…The CoDec rate of 9 to 12 (15 DCT coefficients) is the slowest (5 to 7 images/sec), but gives the highest quality. This applies for both resolutions, 16 and 128 grey scales. Therefore, using a CoDec rate of 9 ( 2200 Byte/image) it would be possible to transmit about 500 images/sec using the same…”

Section: Video Transmission and Time Ratesmentioning

confidence: 99%

“…The original resolution of our individual digital video images is given by the PAL video standard. These images are then reduced to 176x 144 pixels with 16 grey scales per pixel, following the H.261 (Px64) specification. Other operation modes supported by our prototype use 360 x288 pixels (the resolution of the Common Intermediate Format -CIF) or 176x 144 pixels (the resolution of the Quarter Common…”

Section: Video Communicationmentioning

confidence: 99%

“…Most of the time, the receiving workstation is busy decompressing the video data, which makes it necessary to reduce the rate of transmitted frames. Therefore in order to increase the frame rate on the workstation, additional frames are interpolated from existing video frames using the Intemediate Image Interpolation algorithm (see [16]). As a result the frame rate is doubled at reasonable computing cost without additional network usage.…”

Section: Video Compressionmentioning

confidence: 99%

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Using Multimedia to Support Cooperative Editing

Santos

Tritsch

1993

Computer Graphics Forum

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By Cooperative Editing we mean the coordinated manipulation of information by a group of authors. During the editing process the (co‐)authors need to communicate their ideas, drafts and constraints (remotely or face‐to‐face) until a final version of the information is achieved. For the different phases of this process ‐ discussion of ideas, editing, cross‐checking ‐ different media or media integration are adequate. Furthermore, analysing the transition from individual work to group work, within different human activities, two pitfalls are often detected if computer support is considered: a) technological communication difficulties, especially if the group is remotely located on heterogeneous hardware, associated with a fall in productivity and frequent social inadequacies of the group's computer support; b) the lack of integrated media processing tools available for group editing. In order to solve these problems, we suggest that Multimedia can be applied in two ways: to effectively support the necessary group communication links; and to enhance the expressiveness of the information edited. To test this statement we have been conceptualising and implementing a prototype system. Most of the techniques involved can be used in other tools that need multimedia capabilities or that support other specific types of group activities. The innovative aspects of the work are the use of multimedia techniques to support demanding applications, possibly on cross‐platforms, and the integration of several concepts to support cooperation.

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Section: Video Transmission and Time Ratesmentioning

confidence: 99%

Section: Video Communicationmentioning

confidence: 99%

Section: Video Compressionmentioning

confidence: 99%

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Using Multimedia to Support Cooperative Editing

Santos

Tritsch

1993

Computer Graphics Forum

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“…Multimedia is also the combination of three or more items: text, graphics, animation, sound, images, video, that with the crescent integration of communication systems will cause the existence of multimedia information system that, supported by a network, will proportionate even far off [6].…”

Section: Multimedia Concept On Wwwmentioning

confidence: 99%

Multimedia environment support by WWW in a computer assisted learning system

Galvao

Lopes²,

Gomes³

Proceedings Third International Conference on Computational Intelligence and Multimedia Applications. ICCIMA'99 (Cat. No.PR0030

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The innovative exploitation of information technologies and communication promises to improve the quality, flexibility and effectiveness of engineering education. The present application SEACom is a bilingue system and it is divided into two main versions: one portuguese other in english whose mane is TeSA -Teaching System Architecture for the production of Printing Circuit Boards -PCB wants to do the integration of newtechnology based media with existing teaching methods and the impact this will have in the student learning. The most important phases in the project and manufacturing of electronic components -PCB are presented to the student and this has nine stages of production and three levels of interfaces: basic, intermediate and advanced that represent an ergonomic interface. Meanwhile, you can navigate among this levels and stages in a friendly way via a tele-learning scenario. Also severals evaluation questionnaires are suggested and one intelligent agent help option is at your disposition, where you have a detailed information about a real production CIM line of PCB with animated images, all of this developed in a multimedia environment, supported by the World Wide Web (WWW).

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Co-operative Multimedia on Heterogeneous Platforms

Cited by 2 publications

References 2 publications

Using Multimedia to Support Cooperative Editing

Using Multimedia to Support Cooperative Editing

Multimedia environment support by WWW in a computer assisted learning system

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