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.