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2D Autocorrelation function

version 1.0 (351 KB) by

Calculate the 2d Auto-correlation function of matrix based on Wiener-Khinchin theorem .



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This function calculates the 2D auto correlation function of matrix ( gray scale image) using Wiener-Khinchin theorem and uses the four internal function ifft2,fftshift,fft2 & conj .

In the PDF file "2DAUTOCORRELATIONFUNCTION.pdf" the calculations are detailed using two examples,
1) "circuit.tif" image.
2) 2d zero mean Gaussian signal .
As in 1d, the 2d auto-correlation of the second example is symmetric and has Dirac impulse in the center.

Comments and Ratings (5)

Boran Zhou

Rico Cahyadi

Tong Pang

Leo Shi

MATLAB Release
MATLAB 7.4 (R2007a)

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