Edge-based correlation image registration for multispectral imaging

DWPI Title: Registration information obtaining method, involves correlating edge filtered reference and selected images to produce phase correlation image, which is utilized to determine registration information
Abstract: Registration information for images of a common target obtained from a plurality of different spectral bands can be obtained by combining edge detection and phase correlation. The images are edge-filtered, and pairs of the edge-filtered images are then phase correlated to produce phase correlation images. The registration information can be determined based on these phase correlation images.
Use: Method for obtaining registration information indicative of mis-registration between images of a target.
Advantage: The method allows obtaining the registration information indicative of mis-registration between the images of a target, and allows increasing the level of robustness at low processing cost, in an effective manner.
Novelty: The method involves filtering images to produce edge-filtered reference and selected images (31, 33), where the edge filtered reference and selected images are correlated to produce a phase correlation image. The phase correlation image is utilized to determine the registration information. Maximum value of correlation of the phase correlation image is identified, and the phase correlation image is filtered to produce a filtered phase correlation image. Midpoint is identified between maximum and minimum values of correlation of the filtered phase correlation image.
Filed: 3/27/2008
Application Number: US200857226A
Tech ID: SD 7208.1
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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