void controller_HeadMove(object sender, HeadEventArgs e)
{
if (controller == null || controller.Tracker == null)
{
return;
}
if (backproj)
{
try
{
Camshift camshift = controller.Tracker as Camshift;
Bitmap backprojection = camshift.GetBackprojection(
PixelFormat.Format24bppRgb, camshift.TrackingObject.Rectangle);
if (parent.faceForm != null && !parent.faceForm.IsDisposed)
{
MatchingTracker matching = parent.faceForm.faceController.Tracker as MatchingTracker;
marker.Rectangles = new[] { matching.TrackingObject.Rectangle };
marker.ApplyInPlace(backprojection);
}
pictureBox.Image = backprojection;
}
catch
{
pictureBox.Image = null;
}
}
}
void controller_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
if (!backproj)
{
Bitmap image = eventArgs.Frame;
if (image == null)
{
return;
}
if (parent.faceForm != null && !parent.faceForm.IsDisposed)
{
MatchingTracker matching = parent.faceForm.faceController.Tracker as MatchingTracker;
Rectangle rect = new Rectangle(
matching.TrackingObject.Center.X,
0,
image.Width - matching.TrackingObject.Center.X,
matching.TrackingObject.Center.Y);
rect.Intersect(new Rectangle(0, 0, image.Width, image.Height));
marker.Rectangles = new[] { matching.TrackingObject.Rectangle };
image = marker.Apply(image);
}
pictureBox.Image = image;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="FaceController"/> class.
/// </summary>
///
public FaceController()
{
// Setup tracker
tracker = new MatchingTracker();
tracker.Extract = false;
// Setup detector
detector = new HaarObjectDetector(new NoseHaarCascade());
detector.ScalingFactor = 1.1f;
detector.SearchMode = ObjectDetectorSearchMode.Single;
detector.ScalingMode = ObjectDetectorScalingMode.SmallerToGreater;
detector.MinSize = new Size(2, 5);
//detector.MaxSize = new Size(15, 18);
}
public void stringHashMap()
{
int LOCAL_STATE_SIZE = 2048;
// exercise with random values
for (int i = 0; i < 100; ++i)
{
string[] keys = new string[LOCAL_STATE_SIZE];
bool[] values = new bool[LOCAL_STATE_SIZE];
float[] times = new float[LOCAL_STATE_SIZE];
var realMap = new Dictionary <string, bool>();
for (int j = 0; j < 80; j++)
{
var key = RandomString(10);
realMap.Add(key, true);
MatchingTracker.set(key, true, keys, values, times);
}
foreach (var thing in realMap)
{
Assert.That(MatchingTracker.lookup(thing.Key, keys, values), Is.True);
}
}
}
public void ProcessFrame()
{
string basePath = Path.Combine(NUnit.Framework.TestContext.CurrentContext.TestDirectory, "matching-tracker");
#region doc_track
// Let's test the tracker using a sample video from
// the collection of test videos in the framework:
TestVideos ds = new TestVideos(basePath);
string fileName = ds["walking.mp4"];
// Now, let's open the video using FFMPEG:
var video = new VideoFileReader();
video.Open(fileName);
// And then check the contents of one of the frames:
Bitmap frame = video.ReadVideoFrame(frameIndex: 150);
frame.Save(Path.Combine(basePath, "walking_frame.png"));
// Let's register a template for the bike rider in gray shirt
Rectangle roi = new Rectangle(x: 70, y: 105, width: 28, height: 54);
// initialization
var tracker = new MatchingTracker()
{
SearchWindow = roi,
Threshold = 0.0, // never reset the tracker in case it gets lost
RegistrationThreshold = 0.95 // re-register the template if we are 95%
// confident that the tracked object is indeed the object we want to follow
};
// Creating bitmaps and locking them is an expensive
// operation. Instead, let's allocate once and reuse
BitmapData bitmapData = frame.LockBits(ImageLockMode.ReadWrite);
UnmanagedImage unmanagedImage = new UnmanagedImage(bitmapData);
// We will create two color markers: one to show the location of the
// tracked object (red) and another one to show the regions of the image
// that the tracker is looking at (white).
RectanglesMarker objectMarker = new RectanglesMarker(Color.Red);
RectanglesMarker windowMarker = new RectanglesMarker(Color.White);
// Now, for each frame of the video
for (int frameIndex = 0; frameIndex < video.FrameCount; frameIndex++)
{
// Read the current frame into the bitmap data
video.ReadVideoFrame(frameIndex, bitmapData);
if (frameIndex > 150) // wait until the bike rider enters the scene
{
// Feed the frame to the tracker
tracker.ProcessFrame(unmanagedImage);
// Mark the location of the tracker object in red color
objectMarker.SingleRectangle = tracker.TrackingObject.Rectangle;
objectMarker.ApplyInPlace(unmanagedImage); // overwrite the frame
windowMarker.SingleRectangle = tracker.SearchWindow;
windowMarker.ApplyInPlace(unmanagedImage); // overwrite the frame
}
// Save it to disk
frame.Save(Path.Combine(basePath, "frame_{0}.png".Format(frameIndex)));
}
frame.UnlockBits(bitmapData);
#endregion
}
