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In Accord.net framework, two classes are used to construct a Gabor filter:

There are various implementations of Gabor filter elsewhere:

but, the source codes in Accord.net look very strange to me. They discuss 3 types of kernels:

  • Real
  • Imaginary
  • Magnitude
  • SquaredMagnitude

Can anyone either explain the latter 3 (Real is self-explanatory) types or refer me to some materials where I can study them?

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