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Robust Image Registration Using Log-Polar Transform

15 years 23 days ago
Robust Image Registration Using Log-Polar Transform
This paper describes a hierarchical image registration algorithm for affine motion recovery. The algorithm estimates the affine transformation parameters necessary to register any two digital images misaligned due to rotation, scale, shear, and translation. The parameters are computed iteratively in a coarse-to-fine hierarchical framework using a variationof the Levenberg-Marquadt nonlinear least squares optimization method. This approach yields a robust solution that precisely registers images with subpixel accuracy. A log-polar registration module is introduced to accommodate arbitrary rotation angles and a wide range of scale changes. This serves to furnish a good initial estimate for the optimization-based affine registration stage. We demonstrate the hybrid algorithm on pairs of digital images subjected to large affine motion.
George Wolberg, Siavash Zokai
Added 25 Oct 2009
Updated 27 Oct 2009
Type Conference
Year 2000
Where ICIP
Authors George Wolberg, Siavash Zokai
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