3 September 2008 Analytical approximations of translational subpixel shifts in signal and image registrations
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Abstract
Analytical approximations of translational subpixel shifts in both signal and image registrations are derived by setting the derivatives of a normalized cross correlation function to zero and solving them. Without the need of iterative searching, this methods achieves a complexity of only O (mn), given an image size of m × n. Without the need to upsample, computation memory is also saved. Tests using simulated signals and images show good results.
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Qiang Zhang, Qiang Zhang, } "Analytical approximations of translational subpixel shifts in signal and image registrations", Proc. SPIE 7074, Advanced Signal Processing Algorithms, Architectures, and Implementations XVIII, 70740E (3 September 2008); doi: 10.1117/12.798128; https://doi.org/10.1117/12.798128
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