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Image Registration Using Implicit Similarity and Pixel Migration A. Averbuch1
 

Summary: Image Registration Using Implicit Similarity and Pixel Migration
A. Averbuch1
, Y. Keller1,2
1
School of Computer Science, Tel Aviv University, Tel Aviv 69978
Israel
2
Dept. of Electrical Engineering Systems
Tel-Aviv University
Tel-Aviv 69978, Israel
Abstract
This paper presents an energy minimization approach to the registration of significantly dis-
similar images, acquired by sensors of different modalities. The proposed algorithm introduces a
robust matching criterion by aligning the locations of gradient maxima. The alignment is formu-
lated as a parametric variational optimization problem which is solved iteratively by considering
the intensities of a single image. The locations of the maxima of the second image's gradient
are used as initialization. Thus, an implicit matching criterion is achieved while utilizing the
full spatial information, without resorting to invariant image representations. We are able to
robustly estimate affine and projective global motions using `coarse to fine' processing, even
when the images are characterized by complex space varying intensity transformations. These

  

Source: Averbuch, Amir - School of Computer Science, Tel Aviv University

 

Collections: Computer Technologies and Information Sciences