Research And Realization Of Spherical Panorama Navigation System Based On TIP

In recent years, virtual reality became one of the hot topics in domestic and overseas. Virtual reality is the technology that build a virtual three-dimension scene based on the powerful computing capacity of the computers, which makes the observers who enter into the scene can interact with the scene through special sensors. Image-based rendering is one way to achieve the virtual reality. Image-based rendering need input a number of pictures and build the three-dimension model of the scene based on the pictures. Image-based rendering is easy to realize.Tour Into the Picture(TIP) is a way based on image-based rendering, which is suitable for the situation that there is only one picture is input. TIP takes advantage of recovering the scene through setting the vanishing points or vanishing lines of the picture.Full view navigation belong to virtual reality domain, which can help people visit the scene they never gone from360degree. Full view navigation can come ture easily and it need less system sources when compared with traditional three-dimension model building technologies. The advantages of the full view navigation make it was used widely, such as, the streetscape of many companies, preview of buildings, landscape previewing and so on.First, present a new modeling scheme of full view navigation.classical full view navigation technology provides a fixed viewpoint browsing, it does not allow users to experience depth information of the scene. Although constructing the three-dimensional model of the scene will restore depth information of the scene, but this method is very complex and inefficient. Therefore, this paper combines the image-based rendering and TIP (Tour Into the Picture) technology, using a new "liked-spidery mesh" modeling solution, reconstruct three-dimensional model of spherical panorama fast to recover the depth information of the scene, then provide better navigation experience.Second, present an integrated implementation of full view navigation. An integrated implementation of full view navigation consist of three main process. In the first process, we use matting algorithm to extract the foreground and background of panorama; In the second process, we model scene through "liked-spidery mesh" modeling solution. In the last process, we add some effects of non-photorealistic rendering to scene. The implementation frame shows the main technology about realizing full view navigation.