This is an automatic image registration software. The images are allowed to have only translational and
rotational differences. After the user provides the names of two image files, the program will then register
the images and display the result. The software registers the images by selecting a set of landmarks in each
image, determining the correspondence between them, and from the correspondences determining the
translational and rotational differences between the images.

Assumptions: It is assumed that
  • the images have only translation and rotational differences,
  • the images are in the same modality,
  • at least 50% overlap exists between the images.

If any of the assumptions are violated, the program may register the images approximately, or report a
failure.

Modes of operation: The program operates at three different modes.
  • Default mode: This is a fast initial mode used to register the images quickly and automatically. For
    some images, this is sufficient.
  • Redo mode: For images with considerable intensity differences, it may be necessary to redo the
    registration using a larger number of landmarks. The user presses a Redo button after viewing the
    registration result of the default mode.
  • Refinement mode: In this mode, the positions of the landmarks are more accurately determined by
    template matching and the registration is repeated. An example of image registration by this software
    is given below.
(a)                                                                                          (b)
(c)                                                                                          (d)
Fig. 1. (a), (b) Two Landsat images. (c) Registration using the default mode. This takes only a few seconds.
(d) Registration after a refinement step. The refinement step takes only a few seconds.
To obtain a license for this registration software, place an order here =>
2-D auto rigid registration
Image Fusion Systems Research