Subspace Extension to Phase Correlation Approach for Fast Image Registration
Jinchang Ren, T. Vlachos, Jianmin Jiang · Proceedings - International Conference on Image Processing · 2007
A novel extension of phase correlation to subspace correlation is proposed, in which 2-D translation is decomposed into two 1-D motions thus only 1-D Fourier transform is used to estimate the corresponding motion. In each subspace, the first two highest peaks from 1-D correlation are linearly interpolated for subpixel accuracy. Experimental results have shown both the robustness and accuracy of our method.