www.emgu.com/wiki
Number of frames needed for FG (foreground) detector to train.

Declaration Syntax
public int FGTrainFrames { get; set; }
Public Property FGTrainFrames As Integer
public:
property int FGTrainFrames {
int get ();
void set (int value);
}
Assembly:
Emgu.CV (Module: Emgu.CV) Version: 1.5.0.0 (1.5.0.0)