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CvInvokeDft Method
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Performs forward or inverse transform of 1D or 2D floating-point array In case of real (single-channel) data, the packed format, borrowed from IPL, is used to to represent a result of forward Fourier transform or input for inverse Fourier transform

Namespace: Emgu.CV
Assembly: Emgu.CV.World (in Emgu.CV.World.dll) Version: 3.1.0.2282 (3.1.0.2282)
Syntax
public static void Dft(
	IInputArray src,
	IOutputArray dst,
	DxtType flags,
	int nonzeroRows
)

Parameters

src
Type: Emgu.CVIInputArray
Source array, real or complex
dst
Type: Emgu.CVIOutputArray
Destination array of the same size and same type as the source
flags
Type: Emgu.CV.CvEnumDxtType
Transformation flags
nonzeroRows
Type: SystemInt32
Number of nonzero rows to in the source array (in case of forward 2d transform), or a number of rows of interest in the destination array (in case of inverse 2d transform). If the value is negative, zero, or greater than the total number of rows, it is ignored. The parameter can be used to speed up 2d convolution/correlation when computing them via DFT. See the sample below
See Also