Cv.FFT Method (CvArr, CvArr, DFTFlag, Int32)

CvFFT Method (CvArr, CvArr, DFTFlag, Int32)

OpenCvSharp Class Library

Performs forward or inverse Discrete Fourier transform of 1D or 2D floating-point array

Namespace: OpenCvSharp
Assembly: OpenCvSharp (in OpenCvSharp.dll) Version: 1.0.0.0 (1.0.0.0)

Syntax

public static void FFT(
	CvArr src,
	CvArr dst,
	DFTFlag flags,
	int nonzeroRows
)

Public Shared Sub FFT ( 
	src As CvArr,
	dst As CvArr,
	flags As DFTFlag,
	nonzeroRows As Integer
)

public:
static void FFT(
	CvArr^ src, 
	CvArr^ dst, 
	DFTFlag flags, 
	int nonzeroRows
)

static member FFT : 
        src : CvArr * 
        dst : CvArr * 
        flags : DFTFlag * 
        nonzeroRows : int -> unit

src: Type: OpenCvSharpCvArr
Source array, real or complex.
dst: Type: OpenCvSharpCvArr
Destination array of the same size and same type as the source.
flags: Type: OpenCvSharpDFTFlag
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.