Automatic registration of oblique aerial images

Automatic image registration is important for many image understanding and exploitation systems. Zheng and Chellappa (see IEEE Trans. Image Processing, vol.3, p. 311-326, July 1993) reported an automatic image to image registration algorithm for nadir images, where the transformation between two images is modeled by 2-D translation, scale, and 2-D rotation. The simplified model is not appropriate for images taken from severely oblique views. In this paper, a general ground plane image registration algorithm is presented. First we show that ground plane image to image transformation can be determined by eight parameters. We then present an algorithm for the estimation of these parameters. Good experimental results for automatic image to image and image to site model registration have been obtained