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Algorithms for Fast Image Registration

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2 Author(s)
Rezaie, B. ; St. Mary''s University ; Srinath, M.D.

The automatic determination of local similarity between two images (image registration) is one of the most fundamental problems of image processing and pattern recognition. A class of registration algorithms that are reasonably efficient and robust for translational displacement has been considered to determine relative shift between reference and search images. Stochastic image models defined on a rectangular region of support are used to determine feature vectors associated with reference and search images. A new measure, namely, coefficient of variation, is defined to take into account effects of contrast and sharpness of the images. Based upon this measure, a computationally efficient two-stage algorithm is obtained by combining the image-model based algorithm with a template matching technique. Simulation results with several synthetic and real images are presented to evaluate the performance of the algorithms.

Published in:

Aerospace and Electronic Systems, IEEE Transactions on  (Volume:AES-20 ,  Issue: 6 )