一种圆柱形全景图生成新算法及其实现

利用基于图象的绘制(IBR)技术来建立具有真实感的虚拟环境是当前计算机图形学研究领域中的一项热门课题，也是虚拟现实技术中的关键技术。它以简单的图象合成代替基于三维几何的建模和渲染，加快了画面的显示速度，是建立特定三维场景的一种高效率的方法。基于这种方法，我们提出了一种生成圆柱形全景图的新算法，它通过快速查找
相邻两幅图象的匹配区域而实现图象的无缝拼接，建立圆柱形全景图。本算法计算速度快，效率高，能生成逼真的全景图。文章的最后给出了基于这种算法生成的部分全景图图实例。

A New Algorithm for Generating Cylinder Panorama and Its Implementation

Constructing a virtual environment by using the technique of Image-Based Rendering (IBR) has now become a hot topic in the research field of computer graphics, and it is also a key problem in virtual reality ( VR) . In the IBR technology, a 3-D scene is set up by using image-composing instead of 3-D geometry modeling, so it can speed up scene rendering and is highly efficient in constructing a specific virtual scene. In this paper, a new algorithm based on IBR for generating cylinder panorama is put forward. By using the algorithm, a common area between two neighboring images can be found quickly, and the two images can be matched automatically to get a bigger image, thus a cylinder panorama is formed. Some results from our algorithm are shown in the end of this paper.