Emgu CV Library Documentation
RunningAvg Method
NamespacesEmgu.CVImage<(Of <(TColor, TDepth>)>)RunningAvg()()()

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RunningAvg(Image<(Of <(TColor, TDepth>)>), Double)
Update Running Average. this = (1-alpha)*this + alpha*img

RunningAvg(Image<(Of <(TColor, TDepth>)>), Double, Image<(Of <(Gray, Byte>)>))
Update Running Average. this = (1-alpha)*this + alpha*img, using the mask

Assembly: Emgu.CV (Module: Emgu.CV) Version: 1.5.0.0 (1.5.0.0)