Computation of the normalized cross-correlation by fast Fourier transform.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 30235231.
- Also identified by DOI 10.1371/journal.pone.0203434 and PMC identifier 6147431.
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Abstract
The normalized cross-correlation (NCC), usually its 2D version, is routinely encountered in template matching algorithms, such as in facial recognition, motion-tracking, registration in medical imaging, etc. Its rapid computation becomes critical in time sensitive applications. Here I develop a scheme for the computation of NCC by fast Fourier transform that can favorably compare for speed efficiency with other existing techniques and may outperform some of them given an appropriate search scenario.
Medical subject headings
- Algorithms
- Fourier Analysis
- Models, Theoretical