Howtosignalprocessing
- How do you calculate 2D cross-correlation?
- What is cross-correlation of images?
- How does 2D correlation work?
How do you calculate 2D cross-correlation?
c = xcorr2( a , b ) returns the cross-correlation of matrices a and b with no scaling. xcorr2 is the two-dimensional version of xcorr . c = xcorr2( a ) is the autocorrelation matrix of input matrix a . This syntax is equivalent to xcorr2(a,a) .
What is cross-correlation of images?
Cross-Correlation:
Correlation is the process of moving a filter mask often referred to as kernel over the image and computing the sum of products at each location. Correlation is the function of displacement of the filter.
How does 2D correlation work?
As mostly spectroscopic signals are discussed, sometime also two dimensional correlation spectroscopy is used and refers to the same technique. In 2D correlation analysis, a sample is subjected to an external perturbation while all other parameters of the system are kept at the same value.
