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| File Edit Options Process Analyze Video Macros Stacks SEM SPM Windows Help |
Stack to Windows Add Slice Delete Slice Next Slice > Last Slice < Make Movie Capture Frames Animate Average Make Montage Capture Color RGB to 24-bit Color 8-bit Color to RGB RGB to HSV Register Project Reslice Stack Info Auto Register Depth Of Focus Make Mosaic |
Brings all the
slices of a stack into registry with the current slice. This is done
using cross-correlation of the slices: (i) the largest-possible FFT is taken of the current
(reference) slice, (ii) for each of the other slices the FFT is taken
and multiplied by the FFT of the reference slice, (iii) an inverse FFT of this product
is the cross-correlation of the images, the maximum intensity of which
gives the relative shift between the two images, (iv) this shift is
applied to the slice to bring it into registry with the reference
slice. If a power-of-two-sized square region of interest (ROI) is
selected before calling this procedure, then this will be used rather
than the largest
possible square ROI. The shift applied to each slice is displayed
in the Session Log.
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Steve Barrett November 2014 |
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