I am working in digital image restoration field, recently i am studying a paper Blur-Kernel Estimation from Spectral Irregularities, in this paper i have got some terms, which i am unable to understand, can anyone please provide me specific description of these terms. [i have already google it, but i didn't get satisfactory answer].

four-point Laplacian filter

The Wiener−Khinchin theorem

Power Spectrum of an image


Fourier slice theorem

  • 1
    $\begingroup$ try to google it $\endgroup$ Jun 4, 2013 at 7:38
  • 2
    $\begingroup$ Most of these terms are covered very well in Wikipedia and elsewhere - you should probably invest a little more time and effort with your internet searches and then come back if you have any specific unresolved questions. $\endgroup$
    – Paul R
    Jun 4, 2013 at 9:38


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