| public static Dft ( InputArray src, OutputArray dst, DftFlags flags = DftFlags.None, int nonzeroRows ) : void | ||
| src | InputArray | The source array, real or complex |
| dst | OutputArray | The destination array, which size and type depends on the flags |
| flags | DftFlags | Transformation flags, a combination of the DftFlag2 values |
| nonzeroRows | int | When the parameter != 0, the function assumes that /// only the first nonzeroRows rows of the input array ( DFT_INVERSE is not set) /// or only the first nonzeroRows of the output array ( DFT_INVERSE is set) contain non-zeros, /// thus the function can handle the rest of the rows more efficiently and /// thus save some time. This technique is very useful for computing array cross-correlation /// or convolution using DFT |
| return | void | |
public static void Dft(InputArray src, OutputArray dst, DftFlags flags = DftFlags.None, int nonzeroRows = 0)
{
if (src == null)
throw new ArgumentNullException(nameof(src));
if (dst == null)
throw new ArgumentNullException(nameof(dst));
src.ThrowIfDisposed();
dst.ThrowIfNotReady();
NativeMethods.core_dft(src.CvPtr, dst.CvPtr, (int)flags, nonzeroRows);
GC.KeepAlive(src);
dst.Fix();
}