Assembly method for multimodal image registration

Assembly method for automatic multimodal image registration is put forward. There are three methods: majority domination, weighted domination and concentration criterion. The first one stems from the simple principle: the minority shall be subordinate to the majority. The second one comes from the fact that different algorithms in general have different rates of correctness. We call these two dominations as weighted assembly registration criterion (WARC) or weighted majority criterion (WMC). The third one may be helpful in choosing a seemingly reasonable registration result by seeking the maximum points in a back projection image when the above two criteria do not work well. By introducing the techniques of edge detection and image equalization, six different registration methods based on normalized mutual information (NMI) and maximization of alignment metric (AM) are developed for multimodal image registration between infrared thermal images and corresponding visible light images. Experiments show the adoption of these criteria may achieve the better registration than any proposed individual method.