Quality-of-presentation-based adaptive presentation of tele-action object in distributed multimedia system

It is challenging to develop and support distributed multimedia systems which operate smoothly in a dynamical environment because of the transferring of the large amount of continuous and media data between different work-sites on the changing network and the temporal restrictions. The Quality of Service (QoS) for the tele-communication is rapidly emerged research topic to provide a certain degree of satisfaction of service required by the end users. However, this dissertation purpose a framework which is to develop an adaptive and active multimedia model with the concepts of Quality of Presentation (QoP) in distributed multimedia systems in order to easily capture an author's scenario and its private knowledge, and flexibly present the story in varied environments and still satisfy the temporal requirements and presentation qualities. The framework is the design of a two-part adaptive multimedia model: the Tele-Action Object (TAO) model which gives private and active abilities to a multimedia data, and the Quality of Presentation (QoP) model which gives adaptive and dynamic abilities in the presentation of the multimedia data. The TAO model allows multimedia authors to specify their private knowledge of a certain multimedia object, and the TAO system will automatically perform the specified actions when events and conditions of this multimedia object satisfy the author's specification. The TAO model provides an active multimedia system with the author's private knowledge. The QoP model allows both authors and viewers to specify temporal requirements, preferences of media presentation, and presentation quality requirements. With dynamical presentation environments, the QoP model adapts the optimal presentation method by evaluating the presentation environment in order to satisfy all the requirements from both the author and viewer. Since the QoP model evaluates all the presentation requirements and current environments, the presentation scheduler tries to suggest the optimal presentation scheduling even before making the communication issues. By combining with QoS (Quality of Service) of the network, it will provide a better method to succeed in the initial network QoS negotiation. The QoP model also reacts to the environmental changes and the user's interactions, and automatically provides alternative replacements which still satisfy the requirements. The concept of QoP model has also been tested on a designed experiment.