Context-based media adaptation in pervasive computing

In pervasive computing applications, computer embedded devices are used to perform control tasks and access the Internet or other information sources. However, most content of current information sources was designed with desktop computers and high-speed network connections in mind. They contain rich media data, which are not suitable for those pervasive devices with limited capabilities. Moreover, for different user preference and application scenarios, not all of the data are relevant and critical to the application. Context-based media adaptation is mainly concerned with selecting different qualities of single media types or selecting different media types, and then delivering information to different context. Some related issues for building a general context-based media adaptation framework are discussed. These issues include context description and exchange schemes, adaptable model for managing and manipulating multimedia content, adaptation techniques and architectural issues.