Video transmission on ATM networks
Yun-Chung Chen · NASA STI Repository (National Aeronautics and Space Administration) · 1993
The broadband integrated services digital network (B-ISDN) is expected to provide high-speed and flexible multimedia applications. Multimedia includes data, graphics, image, voice, and video. Asynchronous transfer mode (ATM) is the adopted transport techniques for B-ISDN and has the potential for providing a more efficient and integrated environment for multimedia. It is believed that most broadband applications will make heavy use of visual information. The prospect of wide spread use of image and video communication has led to interest in coding algorithms for reducing bandwidth requirements and improving image quality. This dissertation presents results of our study on the bridging of network transmission performance and video coding. The major results are: (1) Using two representative video sequences, several video source models are developed. The fitness of these models are validated through the use of statistical tests and network queueing performance. (2) A dual leaky bucket algorithm is proposed as an effective network policing function. The concept of the dual leaky bucket algorithm can be applied to a prioritized coding approach to achieve transmission efficiency. (3) A mapping of the performance/control parameters at the network level into equivalent parameters at the video coding level is developed. Based on that, a complete set of principles for the design of video codecs for network transmission is proposed.