/// <summary>
/// Learns the background statisitics for one more frame.
/// </summary>
/// <param name="image">Image to be accumulated for learning background statistics.</param>
public void AccumulateBackground(Image <Gray, Single> image)
{
if (!first)
{
avg.Acc(image);
CvInvoke.cvAbsDiff(image.Ptr, prev.Ptr, tmp1.Ptr);
diff.Acc(tmp1);
Count++;
}
first = false;
prev = image.Copy();
}