Research On Application Of Visual Reality Modeling Technical In Virtual Environment Based-on X3D

Virtual reality technology has been applied to each field of the society extensively since the end of the eighties of last century. In our country, though virtual reality technology starts relatively late, time is accepted and favored once entering our country extremely fast when developing, and the research to virtual reality technology is like a raging fire. Virtual reality technology has shown vigorous vitality and captivating glamour in our country. Meanwhile, virtual reality technology is a technology of developing and perfecting constantly. At present, a lot of new developing virtual reality technology appear, and X3D has been regarded as an international new technology standard since October 2004 when it was put out, it is a bright pearl even more. Because X3D technology has ultra and new characteristic and strong function, undoubtedly it has great potentiality in the field of virtual reality. This article introduces development course, characteristic, makes-up and key technology of X3D briefly at first. Then it combines existing virtual reality technology and carrys on the discussion to the mechanism of construction on virtual environment and main methods to develop technology and realizing based on X3D. And then it carrys on exploring and research to mechanism and method of realizing strengthening the virtual reality environmental sense of reality in virtual world based on X3D, combines the computer graphics to learn, in which X3D is regarded as tools, produces the virtual natural scene and irregular figure, for instance trees, leaf, flowers and plants, etc.and strengthens the sense of reality of the virtual environment through introducing the cartoon mechanism, in order to improve more attractive to users like this. Finally, it provids the virtual district to explain the basic means and course of virtual reality application and development through this instance in order to verify models and their feasibility proposed.This text using the demand to set out from the reality of virtual environmental technology mainly, probes into and studys the problem to be solved in virtual environmental modeling course. The groundwork is as follows:(1) We give the summarizes and abstract of real world. The target in the real world is varied, but the target that the computer can deal with and express is only a part among them, so we need to summarize and abstract to the target in the true environment, thus the model of target becames clear.(2) We carry on research to the technology of virtual environmental modeling based on X3D, inlined a mix modeling technology and measure that the data are obtained and utilized after introducing modeling of geometry, parameter modeling , geometric figure. And we inline rewriting technology that introduce the virtual plant, the cartoon which strengthens the virtual scene displays ability.(3) We explain sense of reality characteristic and give measure to strengthen the reality on virtual environmental from sound, illumination, lamination, efficiency of play-up, sense of viewer and so on.(4) Through study on visual modeling method of the virtual environment based on X3D, We build such a virtual environment in fictitious real estate as instance to prove fully the feasibility of techonolgy given early, which has made more satisfactory result.