Remote Control Point Motion Prediction in Internet-Based Real-Time Collaborative Graphics Editing Systems

Monitoring the remote motion of objects or the control points of objects is one of the most important ways to promote awareness in Internet-based real-time collaborative graphics editing systems. However, such kind of remote control point motion is usually influenced by network jitter which leads to halting and jumping presence. Although motion prediction has been proved effective to complement the negative effect of jitter, the low accuracy of prediction remains a problem. In this paper, we present novel algorithms that can improve the accuracy to restore the remote motion smoothly and immediately. The prediction algorithms have been implemented in CoDesign – a prototype system of collaborative graphics editing. Experiments were carried out to test the effectiveness of the algorithms and the results show that by applying effective remote motion prediction the usability of the system can be greatly enhanced.