Methods for providing 3d building information

摘要

A method of providing 3D building information for enhancing a digital map involves applying a lattice deformation to a 3D model of a building, and rendering an image of the deformed 3D model from an orthographic viewpoint. The steps of applying a lattice deformation to the 3D model and rendering an image of the deformed 3D model from an orthographic viewpoint provide a rendered image of the deformed 3D model that is an oblique projection of the building represented by the model. The 3D model is geo-positioned before lattice deformation. The resulting rendered image is superposed on a digital map.