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FarnebackOpticalFlow Constructor
Create a FarnebackOpticalFlow object

Namespace:  Emgu.CV
Assembly:  Emgu.CV.World (in Emgu.CV.World.dll) Version: (
public FarnebackOpticalFlow(
	int numLevels = 5,
	double pyrScale = 0.5,
	bool fastPyramids = false,
	int winSize = 13,
	int numIters = 10,
	int polyN = 5,
	double polySigma = 1.1,
	OpticalflowFarnebackFlag flags = OpticalflowFarnebackFlag.Default


numLevels (Optional)
Type: SystemInt32
The number of pyramid layers, including the initial image. levels=1 means that no extra layers are created and only the original images are used
pyrScale (Optional)
Type: SystemDouble
Specifies the image scale (!1) to build the pyramids for each image. pyrScale=0.5 means the classical pyramid, where each next layer is twice smaller than the previous
fastPyramids (Optional)
Type: SystemBoolean
Fast Pyramids
winSize (Optional)
Type: SystemInt32
The averaging window size; The larger values increase the algorithm robustness to image noise and give more chances for fast motion detection, but yield more blurred motion field
numIters (Optional)
Type: SystemInt32
The number of iterations the algorithm does at each pyramid level
polyN (Optional)
Type: SystemInt32
Size of the pixel neighborhood used to find polynomial expansion in each pixel. The larger values mean that the image will be approximated with smoother surfaces, yielding more robust algorithm and more blurred motion field. Typically, poly n=5 or 7
polySigma (Optional)
Type: SystemDouble
Standard deviation of the Gaussian that is used to smooth derivatives that are used as a basis for the polynomial expansion. For poly n=5 you can set poly sigma=1.1, for poly n=7 a good value would be poly sigma=1.5
flags (Optional)
Type: Emgu.CV.CvEnumOpticalflowFarnebackFlag
The operation flags
See Also