an algorithm for fast image registration and feature matching for the purposes of image stitching
The paper is devoted to the problem of image alignment which is one of the most important in image stitching. The basic requirement of this stage is the high alignment precision. As a rule algorithms for image registration are time consuming. In the paper we propose a fast algorithm for image registration. We suggest only sets of specially extracted control points to be involved in computations. The basic feature of these points, named equipotential points, is that they outline closed contours around brightest and darkest objects in the scene. An algorithm for combining, grouping and reduction of selected control points is also presented. Results, obtained using proposed points and algorithm, are compared with the results, obtained using other control points like corner and edge points.
image stitching image alignment control points image matching representative points