public void TestPlanarObjectDetector()
{
Image<Gray, byte> box = new Image<Gray, byte>("box.png");
Image<Gray, byte> scene = new Image<Gray,byte>("box_in_scene.png");
//Image<Gray, Byte> scene = box.Rotate(1, new Gray(), false);
using (PlanarObjectDetector detector = new PlanarObjectDetector())
{
Stopwatch watch = Stopwatch.StartNew();
LDetector keypointDetector = new LDetector();
keypointDetector.SetDefaultParameters();
PatchGenerator pGen = new PatchGenerator();
pGen.SetDefaultParameters();
detector.Train(box, 300, 31, 50, 9, 5000, ref keypointDetector, ref pGen);
watch.Stop();
Trace.WriteLine(String.Format("Training time: {0} milliseconds.", watch.ElapsedMilliseconds));
MKeyPoint[] modelPoints = detector.GetModelPoints();
int i = modelPoints.Length;
HomographyMatrix h = new HomographyMatrix();
watch = Stopwatch.StartNew();
PointF[] corners = detector.Detect(scene, h);
watch.Stop();
Trace.WriteLine(String.Format("Detection time: {0} milliseconds.", watch.ElapsedMilliseconds));
foreach (PointF c in corners)
{
scene.Draw(new CircleF(c, 2), new Gray(255), 1);
}
scene.DrawPolyline(Array.ConvertAll<PointF, Point>(corners, Point.Round), true, new Gray(255), 2);
}
}
public void TestLDetectorAndSelfSimDescriptor()
{
Image<Gray, byte> box = new Image<Gray, byte>("box.png");
LDetector detector = new LDetector();
detector.SetDefaultParameters();
MKeyPoint[] keypoints = detector.DetectKeyPoints(box, 200, true);
Point[] pts = Array.ConvertAll<MKeyPoint, Point>(keypoints, delegate(MKeyPoint k) { return Point.Round(k.Point); });
SelfSimDescriptor descriptor = new SelfSimDescriptor(5, 41, 3, 7, 20);
int descriptorSize = descriptor.DescriptorSize;
float[] descriptors = descriptor.Compute(box, new Size(20, 20), pts);
float absSum = 0;
foreach (float f in descriptors)
absSum += Math.Abs(f);
//TODO: Find out why selfsimilarity always return descriptors of all zeros. Probaboly a bug in the opencv C++ code
//Assert.AreNotEqual(0, absSum, "The sum of the descriptor should not be zero");
Assert.AreEqual(descriptors.Length / descriptor.DescriptorSize, pts.Length);
foreach (MKeyPoint kp in keypoints)
{
box.Draw(new CircleF(kp.Point, kp.Size), new Gray(255), 1);
}
}
