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CvInvokeAccumulateWeighted Method
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Calculates weighted sum of input src and the accumulator acc so that acc becomes a running average of frame sequence: acc(x,y)=(1-alpha) * acc(x,y) + alpha * image(x,y) if mask(x,y)!=0 where alpha regulates update speed (how fast accumulator forgets about previous frames).

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 AccumulateWeighted(
	IInputArray src,
	IInputOutputArray dst,
	double alpha,
	IInputArray mask = null
)

Parameters

src
Type: Emgu.CVIInputArray
Input image, 1- or 3-channel, 8-bit or 32-bit floating point (each channel of multi-channel image is processed independently).
dst
Type: Emgu.CVIInputOutputArray
Accumulator of the same number of channels as input image, 32-bit or 64-bit floating-point.
alpha
Type: SystemDouble
Weight of input image
mask (Optional)
Type: Emgu.CVIInputArray
Optional operation mask
See Also