Application of Generalized Point Photogrammetry to Framework Reconstruction of Building Facade

3D model reconstructed by point cloud triangulation has some edge burrs.Taking many lines and planes information of city building into account,we suggest retrieving 3D framework model of city building facade based on generalized point photogrammetry theory,which is a sublimation for the contemporary line photogrammetry and the contemporary infinite point(vanishing point) theory.Firstly,initial values of image orientation element can be got by vanishing points.Then,straight-lines of object space are achieved by matched lines.Next,bundle block adjustment based on generalized point(line) is presented to solve orientation element.Finally,3D framework of city building is reconstructed by means of space edges recognition and mapping between texture and model space.Experimental results show that facade reconstruction based on line and plane feature is not only concise,high efficiency,high automation,but also is better than classic 3D facade reconstruction based on point cloud in that distinguishing.And clear 3D edges can be acquired by the proposed approaches.