Research And Implementation Of Virtual Scene Based On Image

The virtual reality technology based on the image is a hotspot in the virtual reality research area, comparing with the three dimensional geometry modeling method based on the computer graphics model, this technology does not need troublesome and time-consuming modeling process, the image quality and the scene plan time has nothing to do with the scene complexity. The splicing technology of panorama drawing is a kind of virtual reality technology to create third dimension graph based on the image protracting, it can provide persuasive effect and does not need clear geometry expressed.This paper researches image plan technology, image and view distortion technology, image splicing technology and the panorama drawing production technology to improve third dimension of the simulation scene in the simulation service systems, compares the two virtual reality technologies based on the geometry modeling and based on the image plan, and analyzes the characteristic and the superiority of the image plan technology in the virtual scene structure. The paper designs the virtual scene collectivity model of the simulating service system and establishes the space time relation model between the virtual object and the view point of the virtual scene. This model is a netted and agility four dimension virtual scene model, and combines many kinds of virtual object organically. Through experiments it is indicated that the model can form one virtual scene which is similar with real world characteristic and is able to be browsed. In the process of the image projection, match and splicing, the current image splicing technology is studied, the shortcoming and excellences of each kind of image splicing algorithm are analyzed. The paper adopts the color image becoming directly the gradation outline drawing, filtering the chromatic aberration disturbance and after sampling the sketchy match and precise matches to complete joining two images. The paper studies the method about photography scene of the ordinary camera and the fish eye lens separately, according to the research results and the actual problem characteristic the paper chooses the photography method of the ordinary camera to carry on the spherical panorama drawing pro and con projection to produce the panoramic image. Finally the paper realizes the virtual scene production.