Video bridging for multipoint video conferencing

✍ Scribed by Ming-Ting Sun; Dave Boyer; Mike Lukacs

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 157 KB
• Volume: 8
• Category: Article
• ISSN: 0899-9457
• DOI: 10.1002/(sici)1098-1098(1997)8:5<427::aid-ima2>3.0.co;2-c

✦ Synopsis

With the growth of video conferencing, the need for There are three possible approaches to implement a video multipoint conferences is also growing. In a multipoint videoconfercombiner for continuous-presence multipoint video conferencing.

ence over a wide-area network, the users are connected to a

The first approach, which we will discuss in Section II, may be multipoint control unit (MCU) in a central office. A video bridge in the thought of as raster combining and is the basis for current MCU MCU combines the input video streams into a suitable format for products. The second approach, which we refer to as codedpresentation. In this article, we discuss various approaches of video domain combining, will be discussed in Section III. The final bridging for continuous presence multipoint video conferencing. We approach which will be discussed in Section IV is pixel-domain also discuss the video quality issues and describe some multipoint combining. We will also describe a pixel-domain video bridge video bridge prototypes we have developed. ᭧ 1997