Local Upsampling Fourier Transform for accurate 2D/3D image registration

Authors:
Cailing Wang;Xiaoyuan Jing;Chunxia Zhao
Affiliations:
School of Automation, Nanjing University of Posts & Telecommunications, Nanjing 210003, PR China and School of Computer Science, Nanjing University of Science & Technology, Nanjing 210094, PR Chin ...;School of Automation, Nanjing University of Posts & Telecommunications, Nanjing 210003, PR China;School of Computer Science, Nanjing University of Science & Technology, Nanjing 210094, PR China
Venue:
Computers and Electrical Engineering
Year:
2012

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Abstract

An accurate image registration method based on Local Upsampling Fourier Transform (LUFT) is developed in this paper. It uses a hierarchical strategy to estimate more accurate image pair's registration parameters, which consists of a coarse estimation and a robust and efficient refinement stage as well. The initial parameter is estimated through a conventional Phase Only Correlation (POC) method in the coarse stage, and then it is refined by the Local Upsampling Fourier Transform in frequency domain to achieve higher accuracy. Furthermore, as will be shown in many experiments, the LUFT can achieve more accurate translation and rotation estimation, and it is efficient, robust to noise, and it can be applied to accurate 2D and 3D image rotation and translation estimation.