Real time multi-user interaction with 3D graphics via communication networks

Abstract

There is a lot of development on cooperative visualization via communication networks. User interaction is kept to minimum in this kind of development such as only making marks on the transmitted images etc.There are relatively less work done on cooperative complicated interaction especially on real time cooperative interaction via network. The work presented in this paper is a challenge to the second type of cooperative work. The objective of the system is to allow multiple users to design a 3D scene cooperatively via communication networks in real time.The paper describes the design and communication model of the system, the design and implementation of the protocol to transmit changes in the 3D-scene, the database consistency techniques and the implementation of the 3D-editor interface. The current implementation status of the system shows that a real time, full user interaction in 3D cooperative design via communication networks is achievable by our design strategy.

A Remote Cooperative Design System Using Interactive 3d Graphics

“…This means that in addition to all the cooperative visualization features that the system has, a full interactive, online operation is supported by the system. [1][2][3][4] The system includes a multi-site cooperative editor, a database and a cooperative support platform. By using the system, the remote users can have a cooperative working session online.…”

Mu3D

“…We call this technique the "selection" policy [Luo98] (or better to say "selection-and-go"). In order to allow an object to be modified, the user has to select first the sub-tree defined beneath such object.…”