交互的极线几何建模方法

Interactive Polar Geometry Based Modeling Approach

讨论了一种基于图像的交互式几何建模方法 .该方法利用手动方式标定模型的平行线、特征点 ,得到照相机参数 ,进而计算出模型的几何信息 ,并从图像中提取纹理 .提出一种最优纹理选取算法 ,以确保拼接纹理的合理性 .该算法主要应用于构造形状规则的模型 ,不需要知道照相机的内外参数 ,简便实用 .实验结果表明 ,该方法在一定的场合下可以满足重建要求 ,重建出的三维模型具有照片真实感 。

An interactive method of image based modeling is presented. The algorithm presented in this paper uses model's parallel lines and characteristic points, which are gained from interactive input, to compute camera's parameters, and further model's geometric information. Texture information is also obtained from the images. Particularly we propose a best image selecting algorithm to ensure proper texture patching. The method is used for construction regular models, and it's easy to use for no camera's intrinsic or extrinsic parameters are required. The experimental results show that it does well in some occasions, and that the models are photo realistic and capable of real time walk through.