Abstract
In order to retrieve initial data for 3D city models, mapping processes of ground objects are needed by professional operators using stereo aerial images. In this paper, we purpose a method for improving the precision of stereo matching that ultimately aims at extracting the shape and position of ground object with aerial images. In the first part, we will describe an automatic method for estimating the parameters of the camera. In the second part, we will describe the consistency of objects across epipolar lines, and the feasibility of using line segment for initial correspondence verification. In the third part, we will describe a method for line segment extraction and the matching of line segments. Some typical experimental results are also presented to show the validity of our proposed method.
