A study on modality conversion for universal multimedia access

Abstract

The rapid growth of the Internet has come with an increasing heterogeneity and diversity in the network devices and connections used for information access. Conventionally content adaptation is one of the important technologies to guarantee the Quality of Service (QoS) to multimedia applications in heterogeneous terminals and networks. This content adaptation technology can be classified into two categories; one is the content scaling which controls the quality of the content according to the given constraints and the other is modality conversion which converts one modality to different modality, such as video to image. Usually the content scaling method has been used to support the quality of the content corresponding to constraints in terminal and network resources. The quality of the content, however, may be destroyed significantly although the content scaling may be able to sufficiently reduce the rate. In this case, modality conversion may be acceptable and better solution to guarantee the quality of the content. In this paper, we are focused on the experiment of video to image modality conversion method. We also show that in terms of human perceptual information, it is reasonable to convert the video version into the image version in real environment from two kinds of experiment.