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Shih-Fu Chang, Paul Bocheck. Principles and Applications of Content-Aware Video Communication. In Invited Paper in IEEE International Symposium on Circuits and Systems (ISCAS-2000), Geneva, Switzerland, May 2000.

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Most traditional video communication systems consider videos as large files or long bit streams, ignoring the underlying visual content. Content-aware video communication is a new framework that explores the strong correlation between video content, resource (bit rate), and utility (quality). It models and predicts the video traffic and utility function by analyzing the video content. The resulting tarffic models and utility functions facilitate joint adaptation between different video streams under dynamic content changes, network conditions, and heterogeneous device capabilities. They can be used in selecting the optimal transcoding architecture in a pervasive computing environment.ยทยท We demonstrate the advantages of the content-aware approach in two applications. First, content-aware models was developed for predicting video traffic for live video streams. The video traffic models were evaluated in a dynamic network resource allocation system. Our simulations have shown that, compared to existing techniques, significant reduction ( 55% to 70%) in required network resources can be achieved. Second, we have used content-aware principle for automatic generation of utility function (subjective quality vs. bit rate) for live video. Our results indicate that high accuracy in estimating utility functions can be achieved. We are currently applying the utility functions in optimal transcoding and media scaling in distributed network environments.?


Shih-Fu Chang
Paul Bocheck

BibTex Reference

   Author = {Chang, Shih-Fu and Bocheck, Paul},
   Title = {Principles and Applications of Content-Aware Video Communication},
   BookTitle = {Invited Paper in IEEE International Symposium on Circuits and Systems (ISCAS-2000)},
   Address = {Geneva, Switzerland},
   Month = {May},
   Year = {2000}

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