Analytical approximations of translational subpixel shifts in signal and image registrations

Qiang Zhang

doi:10.1117/12.798128

3 September 2008 Analytical approximations of translational subpixel shifts in signal and image registrations

Qiang Zhang

Proceedings Volume 7074, Advanced Signal Processing Algorithms, Architectures, and Implementations XVIII; 70740E (2008) https://doi.org/10.1117/12.798128
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

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.

Citation Download Citation

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); https://doi.org/10.1117/12.798128

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