关键词: 虚拟现实, 语音通道, 多通道交互, 虚拟现实造型语言(VRML)

Abstract: This paper discusses a PC-based platform for Virtual Reality (VR) system development--PCVRS. Comparing with the same kind of systems abroad, this paper analyses in detail the features of PCVRS on interactive functions and opening capabilities. As for interactive functions, PCVRS added the Pick & Play interaction, supplied voice as an additional interacting modal and implemented multimodal interaction. The opening capabilities of the system are mainly shown by its support for VRML which is widely used as virtual reality modeling language on Internet. The system even supplies abstract modeling data structure as a uniform interface for various kinds of 3D scene data. By introducing one of the applications developed on this platform , we also tested the performance of this system. The test result shows that for those applications where scenes are not very complicated and the output requirements are not very high, PCVRS has a good interactive performance.

Key words: virtual reality, voice modal, multimodal interaction, virtual reality modeling language (VRML)