3D object reconstruction from single images has extensive applications in multimedia. Most of existing related methods only recover rough 3D objects and the objects are often required to be interconnected. In this paper, we propose a novel method which uses a set of auxiliary reference grids to precisely reconstruct 3D objects from a single uncalibrated image. In our system, the user first draws the line drawings of the objects. Then, the initial focal length f of the camera is computed with a calibration method, and then the initial focal length is refined by a reference grid. With the refine...
