Image Registration: Difference between revisions
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\end{pmatrix} | \end{pmatrix} | ||
</math> | </math> | ||
==Phase correlation== | |||
{{main | Wikipedia: Phase correlation}} | |||
By the [https://en.wikipedia.org/wiki/Discrete_Fourier_transform#Shift_theorem Fourier shift theorem], a translation in the spatial domain is a linear phase shift in the Fourier domain.<br> | |||
Hence, if you have two images with only a translation, you can identify the translation by estimating the phase shift. | |||
==Log-Polar Transformation== | ==Log-Polar Transformation== | ||