/// <summary>
/// Process a new video frame.
/// </summary>
public void ProcessFrame(UnmanagedImage frame)
{
filterImage = filter.Apply(frame);
Blob blob = extractBlob();
if (blob == null)
{
trackingObject.Reset();
return;
}
trackingObject.Rectangle = blob.Rectangle;
trackingObject.Center = (IntPoint)blob.CenterOfGravity;
if (rotation)
{
// Locate moments
CentralMoments moments = new CentralMoments();
moments.Compute(filterImage, blob.Rectangle);
trackingObject.Angle = moments.GetOrientation();
}
if (extract)
{
blobCounter.ExtractBlobsImage(filterImage, blob, false);
trackingObject.Image = blob.Image;
}
}
public void ComputeTest()
{
Bitmap image = Accord.Imaging.Image.Clone(Resources.hu);
CentralMoments target = new CentralMoments(image, order: 3);
Assert.AreEqual(86424.0 / target.Mu00, 1, 1e-4);
Assert.AreEqual(0, target.Mu01);
Assert.AreEqual(0, target.Mu10);
Assert.AreEqual(5.868206472635379E8 / target.Mu02, 1, 1e-2);
Assert.AreEqual(6348920.945848465 / target.Mu11, 1, 1e-2);
Assert.AreEqual(9.084235762166061E8 / target.Mu20, 1, 1e-3);
Assert.AreEqual(-2.155191E9 / target.Mu12, 1, 1e-4);
Assert.AreEqual(7.125893E8 / target.Mu21, 1, 1e-3);
Assert.AreEqual(-1.26244547E10 / target.Mu30, 1, 1e-4);
Assert.AreEqual(1.71818829E9 / target.Mu03, 1, 1e-4);
SizeF size = target.GetSize();
float angle = target.GetOrientation();
Assert.AreEqual(410.207916f, size.Height);
Assert.AreEqual(329.534637f, size.Width);
Assert.AreEqual(0.0196384024f, angle, 1e-4);
}
