混合漫游系统

提出一种新颖的场景绘制方法,首先对图像进行处理,用交互的方法区分场景的背景和前景;然后分别建立背景和前景的3D几何模型,采用一种分片绘制的策略,进一步提高了绘制质量．通过将动态网格叠加到几何模型中,在静态图像中产生动态纹理,丰富场景内容,从而建立了一种混合场景表示,实现逼真的场景实时漫游．实验证明,该算法具有较好的普适性,可以处理包含灭点或灭线的不同类型照片、绘画和全景图．

Hybrid Walkthrough System

A novel approach called "Hybrid Walkthrough System" for image-based rendering is proposed in this paper.At first,the foreground and background in the image are interactively segmented,then their net grid models are constructed respectively.To prevent from texture distortion,a small block texture mapping technique is used to improve the rendering quality of the scene.After a dynamic grid is added to the geometry model,a new scene including dynamic texture is created,and the user can walkthrough it from different view points.In comparison with the previous works,this approach can be applied to a wider range of images for walkthrough.We find that the approach allows tour into a picture which has one vanishing point,double vanishing points,or multiple vanishing points.The test result also shows that our approach can be effectively applied to such pictures that even contain a vanishing line.In addition,different kinds of images are tested to show the effectiveness of our approach.