Data centered collaboration in a mobile environment

In this paper we present a system we have developed for a mobile audio-video collaboration that is centered around the distributed datasets. In our approach all the data are processed remotely on dedicated servers, where they are successively rendered off-the-screen and compressed using a video codec. The signals captured from the users´ cameras are transferred to the server in real time, where they are combined with the data frames into single video streams. Dependent on the device´s capabilities and current network bandwidth every session participant receives individually customized stream, which presents both the remote data and the camera view of currently chosen presenter alternately. At the end of this paper we also present the results of the system´s performance test that we have obtained during the collaborative visualization of a remote, multidimensional dataset using different kind of modern mobile devices, including tablets and cell phones.