How do i do orientation correlation.

posted Nov 23, 2015, 3:47 AM by Aslak Grinsted [ updated Sep 19, 2016, 9:45 AM ]

Orientation correlation has been added to the templatematch function. It often out performs NCC, and has good performance on Landsat 7 images with SLC off.

You can also do it manually, which used to be the solution for doing it. ImGRAFT can also do orientation correlation if you apply a simple "orientation" pre-processing step of the images. Here's how you might implement that:

forient=@(A)exp(i*atan2(imfilter(A,[1 0 -1],'replicate'),imfilter(A,[1;0;-1],'replicate')));

oA=forient(A);

oB=forient(B);

[du,dv]=templatematch(oA,oB,'method','CCF')

Reference:

Fitch et al. 2002: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.64.5662&rep=rep1&type=pdf

CCF-O

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