Abstract
This paper descibes the procedure of registration of two digital images using two steps resampling method, a fine registration by the second step resampling after a coarse registration by the first step resampling. Inorder to register two images, as many as possible standard points for the registration (Registration GCP) should be selected all over the images and the root mean square of the positional errors of the Registration GCPs between the two images should be minimized. The positional errors of the Registration GCPs between the two images could be obtained automatically by computing the correlation coefficients between the two image chips (16×16) around the Registration GCPs, which enabled a quick process of image registration. Band 6 was best for automatic image matching in registering two Landstat MSS images. The relationship between the registration accuracy and the number of the Registration GCPs was also examined.
