This software registers two images using the transformation of the Cartesian coordinate system (similarity
transformation). The images may have translational, rotational, and scaling differences. The user only
provides the names of the two image files to be registered. The program will then automatically 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, rotational, and scaling differences between the images.
Assumptions: It is assumed that
Satellite images and images obtained by an aircraft at different flight paths and possibly from different
altitudes of a scene can be registered by this software. If any of the above assumptions are violated, the
program may register the images approximately or report a failure.
Modes of operation: The program operates at three different modes:
transformation). The images may have translational, rotational, and scaling differences. The user only
provides the names of the two image files to be registered. The program will then automatically 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, rotational, and scaling differences between the images.
Assumptions: It is assumed that
- the images have only translation, rotational, and scaling differences,
- scaling difference between the images is within a factor of 2,
- the images are in the same modality,
- at least 50% overlap exists between the images.
Satellite images and images obtained by an aircraft at different flight paths and possibly from different
altitudes of a scene can be registered by this software. If any of the above 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. For many 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.
Fig. 1. (a) A Landsat TM image. (b) A Landsat MSS image. (c) Registration of the images by the similarity
transformation.
transformation.
To obtain a license for this registration software, please place an order here =>
 |  |
| 2-D auto similarity registration |
| Image Fusion Systems Research |
(a)
(b)
(c)