Abstract

The process of coregistration SAR images involves a step of choosing a set of tie points. Several current commercial image processing software allows to select nodes of the grid as tie points. Thus, the interval between the tie points depends on the pre-set distance (or interval) of the grid nodes. This may cause to a low cross-relationship of some tie points, then the accuracy of the process of co-registration is affected. However, the accuracy of this process can be improved if feature points are identified on SAR images, and used. As results, the accuracy of DSM generated by SAR image is more reliable. This article dis- cusses about one of techniques can be applied in extracting feature points on image, the wavelet technique.