ncc

Normalized cross correlation

m = ncc(i1, i2) is the normalized cross-correlation between the two equally sized image patches i1 and i2. The result m is a scalar in the interval -1 (non match) to 1 (perfect match) that indicates similarity.

Notes

• A value of 1 indicates identical pixel patterns.
• The NCC similarity measure is invariant to scale changes in image intensity.

See also

zncc, sad, ssd, isimilarity

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