Feature-Based Image Mosaicing

We propose an automatic image mosaicing method which can construct a panoramic image from a collection of digital still images. Our method is fast and robust enough to process a nonplanar scene with unrestricted camera motion. The method includes the following two techniques. First, we use a multiresolution patch-based optical flow estimation for making feature correspondences to obtain a homography automatically. This enabled us to transform images fast and accurately. Second, we have developed a technique to obtain a homography from only three points, instead of four in general, in order to divide a scene into triangles. Experiments using real images confirm the effectiveness of our method. © 2000 Scripta Technica, Syst Comp Jpn, 31(7): 1–9, 2000